WO2010073934A1 - 含フッ素化合物、含フッ素高分子化合物、レジスト組成物及びそれを用いたパターン形成方法 - Google Patents
含フッ素化合物、含フッ素高分子化合物、レジスト組成物及びそれを用いたパターン形成方法 Download PDFInfo
- Publication number
- WO2010073934A1 WO2010073934A1 PCT/JP2009/070865 JP2009070865W WO2010073934A1 WO 2010073934 A1 WO2010073934 A1 WO 2010073934A1 JP 2009070865 W JP2009070865 W JP 2009070865W WO 2010073934 A1 WO2010073934 A1 WO 2010073934A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- group
- fluorine
- polymer compound
- containing polymer
- atom
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
- 0 C*C(CI)C(C)C(C)(C(N)=O)F Chemical compound C*C(CI)C(C)C(C)(C(N)=O)F 0.000 description 6
- VCVKALYMBSTBAV-UHFFFAOYSA-N C=CC(OCC(C1)C2CC1C(CC(C(F)(F)F)(C(F)(F)F)O)C2)=O Chemical compound C=CC(OCC(C1)C2CC1C(CC(C(F)(F)F)(C(F)(F)F)O)C2)=O VCVKALYMBSTBAV-UHFFFAOYSA-N 0.000 description 1
- JJMQLQLMPJLIPZ-UHFFFAOYSA-N CC(C(OC(C1CC2C3C1)C3OC2=O)=O)=C Chemical compound CC(C(OC(C1CC2C3C1)C3OC2=O)=O)=C JJMQLQLMPJLIPZ-UHFFFAOYSA-N 0.000 description 1
- OOIBFPKQHULHSQ-UHFFFAOYSA-N CC(C(OC(CC(C1)C2)(CC1C1)CC21O)=O)=C Chemical compound CC(C(OC(CC(C1)C2)(CC1C1)CC21O)=O)=C OOIBFPKQHULHSQ-UHFFFAOYSA-N 0.000 description 1
- OHWURTQGCZEEHA-UHFFFAOYSA-N CC(C)(C)C(OC(C1CC2C3C1)C3OC2=O)=O Chemical compound CC(C)(C)C(OC(C1CC2C3C1)C3OC2=O)=O OHWURTQGCZEEHA-UHFFFAOYSA-N 0.000 description 1
- JWUXJYZVKZKLTJ-UHFFFAOYSA-N CC(C)(C1)NC(C)(C)CC1=O Chemical compound CC(C)(C1)NC(C)(C)CC1=O JWUXJYZVKZKLTJ-UHFFFAOYSA-N 0.000 description 1
- JXAOHHIICQEAOW-UHFFFAOYSA-N CC(CC(C1)C2)(CC1CC2O1)C1=O Chemical compound CC(CC(C1)C2)(CC1CC2O1)C1=O JXAOHHIICQEAOW-UHFFFAOYSA-N 0.000 description 1
- YCSHCQUVDDBCFR-UHFFFAOYSA-N CC1(C)NC(C)(C)COC1 Chemical compound CC1(C)NC(C)(C)COC1 YCSHCQUVDDBCFR-UHFFFAOYSA-N 0.000 description 1
- FRKYNDIDFNAEDE-UHFFFAOYSA-N CC1(CC(C2)C3)OC4OC4C3CC2C1 Chemical compound CC1(CC(C2)C3)OC4OC4C3CC2C1 FRKYNDIDFNAEDE-UHFFFAOYSA-N 0.000 description 1
- HFWILJLAXOZDFK-UHFFFAOYSA-N CC1(CC2CC(C3)C1)CC3OC2=O Chemical compound CC1(CC2CC(C3)C1)CC3OC2=O HFWILJLAXOZDFK-UHFFFAOYSA-N 0.000 description 1
- RPTJUJDEPODDQK-UHFFFAOYSA-N CCC(C(C(NCCCO)=O)(F)F)OC(C(C)=C)=O Chemical compound CCC(C(C(NCCCO)=O)(F)F)OC(C(C)=C)=O RPTJUJDEPODDQK-UHFFFAOYSA-N 0.000 description 1
- DDUNNQRNNRSLOA-UHFFFAOYSA-N CCC(C(C(O)=O)(F)F)OC(C(C)=C)=O Chemical compound CCC(C(C(O)=O)(F)F)OC(C(C)=C)=O DDUNNQRNNRSLOA-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C235/00—Carboxylic acid amides, the carbon skeleton of the acid part being further substituted by oxygen atoms
- C07C235/02—Carboxylic acid amides, the carbon skeleton of the acid part being further substituted by oxygen atoms having carbon atoms of carboxamide groups bound to acyclic carbon atoms and singly-bound oxygen atoms bound to the same carbon skeleton
- C07C235/04—Carboxylic acid amides, the carbon skeleton of the acid part being further substituted by oxygen atoms having carbon atoms of carboxamide groups bound to acyclic carbon atoms and singly-bound oxygen atoms bound to the same carbon skeleton the carbon skeleton being acyclic and saturated
- C07C235/08—Carboxylic acid amides, the carbon skeleton of the acid part being further substituted by oxygen atoms having carbon atoms of carboxamide groups bound to acyclic carbon atoms and singly-bound oxygen atoms bound to the same carbon skeleton the carbon skeleton being acyclic and saturated having the nitrogen atom of at least one of the carboxamide groups bound to an acyclic carbon atom of a hydrocarbon radical substituted by singly-bound oxygen atoms
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C235/00—Carboxylic acid amides, the carbon skeleton of the acid part being further substituted by oxygen atoms
- C07C235/02—Carboxylic acid amides, the carbon skeleton of the acid part being further substituted by oxygen atoms having carbon atoms of carboxamide groups bound to acyclic carbon atoms and singly-bound oxygen atoms bound to the same carbon skeleton
- C07C235/04—Carboxylic acid amides, the carbon skeleton of the acid part being further substituted by oxygen atoms having carbon atoms of carboxamide groups bound to acyclic carbon atoms and singly-bound oxygen atoms bound to the same carbon skeleton the carbon skeleton being acyclic and saturated
- C07C235/06—Carboxylic acid amides, the carbon skeleton of the acid part being further substituted by oxygen atoms having carbon atoms of carboxamide groups bound to acyclic carbon atoms and singly-bound oxygen atoms bound to the same carbon skeleton the carbon skeleton being acyclic and saturated having the nitrogen atoms of the carboxamide groups bound to hydrogen atoms or to acyclic carbon atoms
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F20/00—Homopolymers and copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride, ester, amide, imide or nitrile thereof
- C08F20/02—Monocarboxylic acids having less than ten carbon atoms, Derivatives thereof
- C08F20/10—Esters
- C08F20/22—Esters containing halogen
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/26—Esters containing oxygen in addition to the carboxy oxygen
- C08F220/28—Esters containing oxygen in addition to the carboxy oxygen containing no aromatic rings in the alcohol moiety
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/34—Esters containing nitrogen, e.g. N,N-dimethylaminoethyl (meth)acrylate
- C08F220/36—Esters containing nitrogen, e.g. N,N-dimethylaminoethyl (meth)acrylate containing oxygen in addition to the carboxy oxygen, e.g. 2-N-morpholinoethyl (meth)acrylate or 2-isocyanatoethyl (meth)acrylate
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/004—Photosensitive materials
- G03F7/0046—Photosensitive materials with perfluoro compounds, e.g. for dry lithography
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/004—Photosensitive materials
- G03F7/038—Macromolecular compounds which are rendered insoluble or differentially wettable
- G03F7/0382—Macromolecular compounds which are rendered insoluble or differentially wettable the macromolecular compound being present in a chemically amplified negative photoresist composition
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/004—Photosensitive materials
- G03F7/039—Macromolecular compounds which are photodegradable, e.g. positive electron resists
- G03F7/0392—Macromolecular compounds which are photodegradable, e.g. positive electron resists the macromolecular compound being present in a chemically amplified positive photoresist composition
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/004—Photosensitive materials
- G03F7/039—Macromolecular compounds which are photodegradable, e.g. positive electron resists
- G03F7/0392—Macromolecular compounds which are photodegradable, e.g. positive electron resists the macromolecular compound being present in a chemically amplified positive photoresist composition
- G03F7/0397—Macromolecular compounds which are photodegradable, e.g. positive electron resists the macromolecular compound being present in a chemically amplified positive photoresist composition the macromolecular compound having an alicyclic moiety in a side chain
-
- H10P76/204—
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/26—Esters containing oxygen in addition to the carboxy oxygen
- C08F220/28—Esters containing oxygen in addition to the carboxy oxygen containing no aromatic rings in the alcohol moiety
- C08F220/283—Esters containing oxygen in addition to the carboxy oxygen containing no aromatic rings in the alcohol moiety and containing one or more carboxylic moiety in the chain, e.g. acetoacetoxyethyl(meth)acrylate
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/20—Exposure; Apparatus therefor
- G03F7/2041—Exposure; Apparatus therefor in the presence of a fluid, e.g. immersion; using fluid cooling means
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24802—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
Definitions
- the present invention relates to a novel fluorine-containing compound, a fluorine-containing polymer compound derived therefrom, a resist composition using the same, and a pattern forming method using the same.
- a tetramethylammonium aqueous solution (TMAH aqueous solution) is preferably used as a developer instead of an organic solvent.
- TMAH aqueous solution As functional groups that can be dissolved in an aqueous solution of TMAH, in other words, can be developed with an aqueous solution of TMAH, phenolic hydroxyl groups, carboxyl groups, and hexafluoroisopropanol groups are known.
- Non-Patent Document 1 Regarding carboxylic acid compounds having a fluorine atom at the ⁇ -position, 2-fluoro-phenylacetic acid and its ester (Patent Document 4), ethyl 2,2 difluoro-3-hydroxy-3-phenylpropionic acid (Non-Patent Document 1) are known.
- the polymer compound constituting the resist composition used when forming a pattern using a high energy beam or an electron beam having a wavelength of 300 nm or less has a novel structure, thereby making it transparent to exposure.
- An object is to provide a resist composition that can form a pattern that is not impaired and has excellent rectangularity, and an object is to provide a monomer that is useful for introducing the structure into a polymer compound.
- the present inventors have intensively studied the solubility of the patterned resist composition coating film in an aqueous solution of tetramethylammonium (TMAH), which is a general-purpose developer, and found that a carbamoyl group is an insoluble resin such as a carboxyl group. Although it was not known to change the solubility depending on the presence, when a fluorine atom is introduced into the ⁇ -position of the carbamoyl group, it becomes a strongly acidic carbamoyl group. As a result, the solubility of the resin containing the repeating unit having the carbamoyl group is reduced.
- TMAH tetramethylammonium
- the coating film made of a resin having a carbamoyl group can be dissolved in the TMAH solution without swelling, and a pattern having a rectangular shape as intended can be formed.
- Resin suitable for negative resists with good solubility because hydrogen atom of carbamoyl group is substituted with neutral hydroxyl group-containing alkyl group etc., and carbamoyl hydrogen atom of strong acidic site and cross-linking site are combined in the same repeating unit. I also found that.
- the carbamoyl hydrogen atom at the strongly acidic site and the acid-decomposable site are combined in the same repeating unit, making the resin suitable for a positive resist with good solubility.
- the inventors have found a novel fluorine-containing compound having polymerizability that is useful for introducing a fluorine atom into the ⁇ -position of the carbamoyl group of the fluorine-containing polymer compound constituting the resist composition of the present invention.
- the present invention includes the following [1] to [19].
- [1] A fluorine-containing unsaturated carboxylic acid amide represented by the following general formula (1).
- R 0 represents any of the polymerizable double bond-containing groups represented by the following formula
- R 2 represents a fluorine atom or a fluorine-containing alkyl group
- R 3 is a hydrogen atom, a linear, branched or cyclic alkyl group that may have a substituent of 1 to 20 carbon atoms, or an aryl group that may have a substituent of 3 to 20 carbon atoms.
- Each carbon atom may be substituted with a carbonyl group, an oxygen atom, a sulfur atom or a silicon atom, and each hydrogen atom may be substituted with a halogen atom
- W 1 is a single bond, unsubstituted or substituted methylene group, divalent alicyclic hydrocarbon group, divalent aromatic hydrocarbon group, ether group, carbonyl group, ester group, oxocarbonyl group, thioether group, amide
- amide A divalent combination of one or more organic groups selected from the group consisting of a group, a sulfonamide group, a urethane group, a urea group, a divalent alicyclic hydrocarbon group and a divalent aromatic hydrocarbon group
- the linking group may have a plurality of the same organic group, and any number of hydrogen atoms bonded to the carbon atom may be substituted with a fluorine atom, and each carbon atom is substituted within the linking group.
- a ring
- R 1 represents a group formed by cleavage of the polymerizable double bond of R 0 in the general formula (1), and R 2 , R 3 and W 1 all have the same meaning as in the general formula (1). is there.
- the fluorine-containing polymer compound is an acrylic ester, fluorine-containing acrylic ester, methacrylic ester, fluorine-containing methacrylate ester, styrene compound, fluorine-containing styrene compound, vinyl ether, fluorine-containing vinyl ether, or allyl ether. , Fluorine-containing allyl ethers, acrylamides, methacrylamides, vinyl esters, allyl esters, olefins, fluorine-containing olefins, norbornene compounds, fluorine-containing norbornene compounds, sulfur dioxide and vinyl silanes.
- the fluorine-containing polymer compound according to [6] to [10] further comprising a repeating unit (b) formed by cleavage of a polymerizable double bond of the copolymerizable monomer.
- a resist composition comprising at least the fluorine-containing polymer compound of [6] to [12] and a solvent.
- a chemically amplified resist composition comprising at least the fluorine-containing polymer compound of [6] to [12], a photoacid generator, and a solvent.
- a chemically amplified positive resist composition comprising at least the fluorine-containing polymer compound according to [15] [6] to [12], a photoacid generator, and a solvent.
- a chemically amplified negative resist composition comprising at least the fluorine-containing polymer compound of [6] to [12], a photoacid generator, a crosslinking agent, and a solvent.
- a pattern forming method comprising: a step of performing a heat treatment on the exposed resist coating film; and a step of performing a development process.
- alkyl group includes linear, branched and cyclic alkyl groups, and the cyclic alkyl group is “alicyclic group” or “alicyclic hydrocarbon group”. Included in the concept.
- “Lower” such as “lower alkyl group” means 1 to 4 carbon atoms. However, for a cyclic alkyl group, “lower” means one having a cyclic structure of 3 to 10 carbon atoms, and may have a lower alkyl group as a substituent. For example, methyl group, ethyl group, propyl group, butyl group, cyclopentyl group, cyclohexyl group, norbornyl group, adamantyl group, trifluoromethyl group, 2,2,2-trifluoroethyl group, 1- (trifluoromethyl) ethyl And the 3,3,3-trifluoropropyl group.
- halogen atom means fluorine, chlorine, bromine or iodine.
- the solubility in an aqueous solution of TMAH is changed and becomes rectangular. There is an effect that a good pattern can be formed.
- the fluorine-containing polymer compound represented by the general formula (2) refers to a base resin of the resist composition (a resin having a portion that causes a change in solubility upon exposure as a positive type or negative type resist). The same shall apply hereinafter).
- the fluorine-containing compound represented by the general formula (1) of the present invention can easily and efficiently introduce an acid labile group or a crosslinking group into the base resin constituting the resist composition of the present invention. There is an effect.
- the polymerizable double bond of the fluorine-containing compound represented by the general formula (1) is cleaved.
- the polymerizable double bond of the fluorine-containing compound represented by the general formula (1) is cleaved.
- Fluorine-containing unsaturated carboxylic acid amide represented by the general formula (1)
- R 2 is a fluorine atom or a fluorine-containing alkyl group.
- Such a fluorine-containing alkyl group is not particularly limited, but has 1 to 12 carbon atoms, preferably 1 to 3 carbon atoms, trifluoromethyl group, pentafluoroethyl group, 2,2,2 -Trifluoroethyl group, n-heptafluoropropyl group, 2,2,3,3,3-pentafluoropropyl group, 3,3,3-trifluoropropyl group, hexafluoroisopropyl group and the like.
- R 2 is more preferably a fluorine atom or a trifluoromethyl group.
- R 0 may be a group having a polymerizable double bond, but is preferably any of a polymerizable double bond-containing group represented by the following formula. Of these, an acryloxy group, a methacryloxy group, a trifluoromethacryloxy group, and an allyloxy group are more preferable.
- the linking group W 1 is a single bond, unsubstituted or substituted methylene group, divalent alicyclic hydrocarbon group, divalent aromatic hydrocarbon group, divalent heterocyclic group, ether group, carbonyl group, ester group. , An oxocarbonyl group, a thioether group, an amide group, a sulfonamide group, a urethane group and a urea group, a divalent linking group having a main skeleton consisting of a combination of one or two or more groups selected from the group consisting of
- the group W 1 may include a plurality of the same groups, and any number of hydrogen atoms bonded to the carbon atom may be substituted with a fluorine atom, and each carbon atom includes a substituent in the linking group. A ring may be formed.
- the substituted methylene group that is an element of the main skeleton is represented by the following general formula (3). -CR 4 R 5- (3)
- the monovalent group represented by R 4 and R 5 of the substituted methylene group is not particularly limited, but is a hydrogen atom, a halogen atom or a hydroxyl group, a substituted or unsubstituted alkyl group, a substituted or unsubstituted fat group.
- the valent group can have a fluorine atom, an oxygen atom, a sulfur atom, a nitrogen atom, or a carbon-carbon double bond.
- R 4 and R 5 may be the same or different.
- R 4 and R 5 may be combined with atoms in the molecule to form a ring, and this ring preferably has an alicyclic hydrocarbon structure. Examples of the monovalent organic group represented by R 4 and R 5 include the following.
- the acyclic alkyl group for R 4 and R 5 has 1 to 30 carbon atoms, and preferably 1 to 12 carbon atoms.
- one or more of hydrogen atoms of the alkyl group is an alkoxyl group having 1 to 4 carbon atoms, a halogen atom, an acyl group, an acyloxy group, a cyano group.
- a hydroxyl group, a carboxy group, an alkoxycarbonyl group, a nitro group and the like, and a fluoroalkyl group substituted with a fluorine atom is preferred, and specifically, a trifluoromethyl group, a pentafluoroethyl group 2,2,2-trifluoroethyl group, n-heptafluoropropyl group, 2,2,3,3,3-pentafluoropropyl group, 3,3,3-trifluoropropyl group, hexafluoroisopropyl group, etc.
- a trifluoromethyl group a pentafluoroethyl group 2,2,2-trifluoroethyl group, n-heptafluoropropyl group, 2,2,3,3,3-pentafluoropropyl group, 3,3,3-trifluoropropyl group, hexafluoroisopropyl group, etc.
- the alicyclic hydrocarbon group in R 4 and R 5 or the alicyclic hydrocarbon group formed including the carbon atom to which they are bonded may be monocyclic or polycyclic. Specific examples include groups having a monocyclo, bicyclo, tricyclo, tetracyclo structure or the like having 3 or more carbon atoms. The number of carbon atoms is preferably 3 to 30, and particularly preferably 3 to 25 carbon atoms. These alicyclic hydrocarbon groups may have a substituent.
- the monocyclic group those having 3 to 12 ring carbon atoms are preferable, and those having 3 to 7 ring carbon atoms are more preferable.
- preferred are cyclopropyl group, cyclobutyl group, cyclopentyl group, cyclohexyl group, cycloheptyl group, cyclooctyl group, cyclodecanyl group, cyclododecanyl group and 4-tert-butylcyclohexyl group.
- polycyclic group examples include adamantyl group having 7 to 15 ring carbon atoms, noradamantyl group, decalin residue, tricyclodecanyl group, tetracyclododecanyl group, norbornyl group, cedrol group and the like.
- the alicyclic hydrocarbon group may be a spiro ring, and preferably a spiro ring having 3 to 6 carbon atoms.
- An adamantyl group, a decalin residue, a norbornyl group, a cedrol group, a cyclohexyl group, a cycloheptyl group, a cyclooctyl group, a cyclodecanyl group, a cyclododecanyl group, a tricyclodecanyl group and the like are preferable.
- One or more of the ring carbons of these organic groups or the hydrogen atoms of the linking group are each independently the above alkyl group or substituted alkyl group having 1 to 30 carbon atoms, hydroxyl group, alkoxyl group, carboxyl group, alkoxycarbonyl Examples thereof include monocyclic groups in which one or two or more hydrogen atoms contained therein are substituted with a fluorine atom or a trifluoromethyl group.
- the alkyl group having 1 to 30 carbon atoms is preferably a lower alkyl group, more preferably an alkyl group selected from the group consisting of a methyl group, an ethyl group, a propyl group, and an isopropyl group.
- substituent of the substituted alkyl group include a hydroxyl group, a halogen atom, and an alkoxyl group.
- alkoxyl group include those having 1 to 4 carbon atoms such as a methoxy group, an ethoxy group, a propoxy group, and a butoxy group.
- the alkoxycarbonyl group include a methoxycarbonyl group, an ethoxycarbonyl group, and an isopropoxycarbonyl group.
- alkoxyl group in R 4 and R 5 examples include those having 1 to 4 carbon atoms such as methoxy group, ethoxy group, propoxy group and butoxy group.
- the substituted or unsubstituted aryl group for R 4 and R 5 has 1 to 30 carbon atoms.
- the monocyclic group those having 3 to 12 ring carbon atoms are preferable, and those having 3 to 6 ring carbon atoms are more preferable.
- phenyl group biphenyl group, terphenyl group, o-tolyl group, m-tolyl group, p-tolyl group, p-hydroxyphenyl group, p-methoxyphenyl group, mesityl group, o-cumenyl group, 2, 3 -Xylyl group, 2,4-xylyl group, 2,5-xylyl group, 2,6-xylyl group, 3,4-xylyl group, 3,5-xylyl group, o-fluorophenyl group, m-fluorophenyl group P-fluorophenyl group, o-trifluoromethylphenyl group, m-trifluoromethylphenyl group, p-trifluoromethylphenyl group, 2,3-bistrifluoromethylphenyl group, 2,4-bistrifluoromethylphenyl group 2,5-bistrifluoromethylphenyl group, 2,6-bistrifluoromethyl
- Examples of the substituted or unsubstituted condensed polycyclic aromatic group having 1 to 30 carbon atoms include pentalene, indene, naphthalene, azulene, heptalene, biphenylene, indacene, acenaphthylene, fluorene, phenalene, phenanthrene, anthracene, fluoranthene, and acephenant.
- One hydrogen atom is removed from rylene, asanthrylene, triphenylene, pyrene, chrysene, naphthacene, picene, perylene, pentaphen, pentacene, tetraphenylene, hexaphene, hexacene, rubicene, coronene, trinaphthylene, heptaphene, heptacene, pyranthrene, ovalen, etc. And one or more of these hydrogen atoms are substituted with fluorine atoms, alkyl groups having 1 to 4 carbon atoms or fluorine-containing alkyl groups. It may be mentioned as preferred ones have.
- Examples of the monocyclic or polycyclic heterocyclic group having 3 to 25 ring atoms include pyridyl group, furyl group, thienyl group, pyranyl group, pyrrolyl group, thiantenyl group, pyrazolyl group, isothiazolyl group, isoxazolyl group, Pyrazinyl group, pyrimidinyl group, pyridazinyl group, tetrahydropyranyl group, tetrahydrofuranyl group, tetrahydrothiopyranyl group, tetrahydrothiofuranyl group, 3-tetrahydrothiophene-1,1-dioxide group, etc.
- R a and R b each independently represent a hydrogen atom or an alkyl group having 1 to 4 carbon atoms.
- n represents an integer of 2 to 4.
- the divalent alicyclic hydrocarbon group constituting the main skeleton of the linking group W 1 may be monocyclic or polycyclic. Specific examples include groups having a monocyclo, bicyclo, tricyclo, tetracyclo structure or the like having 3 or more carbon atoms. The number of carbon atoms is preferably 3 to 30, and particularly preferably 3 to 25 carbon atoms. These alicyclic hydrocarbon groups may have a substituent.
- the monocyclic group those having 3 to 12 ring carbon atoms are preferable, and those having 3 to 7 ring carbon atoms are more preferable.
- a cyclopropylene group a cyclobutylene group, a cyclopentylene group, a cyclohexylene group, a cycloheptylene group, a cyclooctylene group, a cyclodecanylene group, a cyclododecanylene group, and a 4-tert-butylcyclohexylene group. it can.
- polycyclic group examples include adamantylene group having 7 to 15 ring carbon atoms, noradamantylene group, divalent residue of decalin, tricyclodecanylene group, tetracyclododecanylene group, norbornylene group, cedrol. Mention may be made of divalent residues.
- the alicyclic hydrocarbon group may be a spiro ring, and in this case, a spiro ring having 3 to 6 carbon atoms is preferred.
- one or more of the ring carbons of these organic groups or the hydrogen atoms of the linking group are each independently an alkyl group having 1 to 30 carbon atoms or a substituted alkyl group, hydroxyl group as described for R 4 or R 5.
- the alkyl group having 1 to 30 carbon atoms is preferably a lower alkyl group, more preferably an alkyl group selected from the group consisting of a methyl group, an ethyl group, a propyl group, and an isopropyl group.
- substituent of the substituted alkyl group include a hydroxyl group, a halogen atom, and an alkoxyl group.
- alkoxyl group include those having 1 to 4 carbon atoms such as a methoxy group, an ethoxy group, a propoxy group, and a butoxy group.
- the alkoxycarbonyl group include a methoxycarbonyl group, an ethoxycarbonyl group, and an isopropoxycarbonyl group.
- the divalent aromatic hydrocarbon group constituting the main skeleton of the linking group W 1 has 1 to 30 carbon atoms.
- the monocyclic group those having 3 to 12 ring carbon atoms are preferable, and those having 3 to 6 ring carbon atoms are more preferable.
- the substituted or unsubstituted condensed polycyclic aromatic group constituting the main skeleton of W 1 preferably has 1 to 30 carbon atoms, and is pentalene, indene, naphthalene, azulene, heptalene, biphenylene, indacene, acenaphthylene, fluorene, phenalene , Phenanthrene, anthracene, fluoranthene, acephenanthrylene, aceanthrylene, triphenylene, pyrene, chrysene, naphthacene, picene, perylene, pentaphen, pentacene, tetraphenylene, hexaphene, hexacene, rubicene, coronene, trinaphthylene, heptaphene, heptacene, pyranthrene And divalent organic groups obtained by removing two hydrogen atoms from ovalen, etc
- Examples of the monocyclic or polycyclic heterocyclic group having 3 to 25 ring atoms constituting the main skeleton of W 1 include pyridine, furan, thienine, pyranine, pyrroline, thianthrene, pyrazone, isothiazone, isoxazone, and pyrazine.
- examples thereof include a heterocyclic group in which one or more hydrogen atoms are substituted with an alkyl group (preferably a lower alkyl group), an alicyclic hydrocarbon group, an aryl group, or a heterocyclic group.
- monocyclic or polycyclic ether rings are preferred, and they are exemplified below.
- the linking group W 1 may be a divalent group obtained by combining the divalent groups described in the above general formula or specifically exemplified.
- the substituted methylene group represented by the general formula (3) is most preferable.
- a substituted methylene group represented by the general formula (3) preferred specific examples are shown below.
- each of O and C represents an oxygen atom and a carbon atom adjacent to the substituted methylene group.
- the monovalent organic group R 3 in the fluorine-containing carboxylic acid amide represented by the general formula (1) is a monovalent organic compound selected depending on the intended use of the fluorine-containing unsaturated carboxylic acid amide and the polymer compound derived therefrom. It is a group.
- R 3 in the homopolymer or copolymer of the fluorine-containing unsaturated carboxylic acid amide having the repeating unit (a) represented by the general formula (2) is (i) a hydrogen atom, (ii) acid generation by light irradiation.
- An acid labile group that is desorbed by the presence of an acid generated from the agent and changes the resin that was insoluble in the alkaline aqueous solution before light irradiation to become soluble; (iii) by the presence of the acid generated from the acid generator by light irradiation A neutral hydroxyl group-containing group having a neutral hydroxyl group that reacts with the crosslinking agent to change the resin that was soluble in the aqueous alkali solution before irradiation to insoluble or hardly soluble, (iv) an acid labile group or neutral Organic groups other than hydroxyl group-containing groups. Resins having one hydrogen atom as R 3 and the other organic group (iv) still have an acidic amide group hydrogen, so that the solubility of the resin in an alkaline aqueous solution is adjusted, particularly promoted. It has a function.
- the purpose of introducing an acid labile group into the fluorine-containing polymer compound constituting the base resin of the resist composition belongs to the positive photosensitivity due to the acid-anxiety group and the near ultraviolet, far ultraviolet, and extreme ultraviolet wavelengths of 300 nm or less. It is to develop the solubility of the resist in an alkaline aqueous solution after exposure to high energy rays such as excimer laser light, soft X-rays, and X-rays, or electron beams. It is possible to change and adjust the polarity of the polymer terminal by changing the ratio to the type of acid labile group and the stability group (which means that the terminal is not an acid labile group). Properties, application properties to the substrate, surface tension, dispersibility of the acid generator, acid diffusion rate, and the like can be optimized.
- the acid labile group (ii) is an organic group represented by any one of the following general formulas (d) to (h).
- R 6 O—C ( ⁇ O) — (d)
- R 6 is an alkyl group which may have a substituent having 1 to 4 carbon atoms, and an alicyclic hydrocarbon group which may have a substituent having 3 to 30 carbon atoms. Alternatively, it represents an aryl group which may have a substituent having 6 to 14 carbon atoms.
- R 6 has the same meaning as R 6 in the general formula (d).
- R 7 is a hydrogen atom, an alkyl group which may have a substituent having 1 to 4 carbon atoms, an alicyclic hydrocarbon group which may have a substituent having 3 to 30 carbon atoms, An alkoxyl group which may have 6 substituents, an alkenyl group which may have 2 to 4 carbon atoms, an aryl group which may have 6 to 14 carbon atoms Alternatively, it represents an aralkyl group which may have a substituent having 7 to 20 carbon atoms.
- R 8 , R 19, and R 10 may be the same or different, each may be an alkyl group optionally having a substituent having 1 to 4 carbon atoms, or 3 to 30 carbon atoms.
- Two groups out of R 8 to R 10 may be bonded to form a ring.
- R 6 C ( ⁇ O) — (h)
- R 6 has the same meaning as R 6 in the general formula (d).
- R 6 , R 7 , R 8 , R 9 and R 10 represent a monovalent organic group described below.
- (d), (e), and (f) are chemical amplifications that have a mechanism for releasing an acid labile group and regenerating the acid by the acid (H + ) generated when the photoacid generator receives light. Since it functions as a mold, it is particularly preferable for use as a resist composition applied to a pattern forming method in which exposure is performed with a high energy ray of 300 nm or less.
- R 6 represents an alkyl group, an alicyclic hydrocarbon group or an aryl group.
- R 7 represents a hydrogen atom, an alkyl group, an alicyclic hydrocarbon group, an alkenyl group, an aralkyl group, an alkoxyl group or an aryl group.
- R 8 , R 9 and R 10 may be the same or different and each represents an alkyl group, an alicyclic hydrocarbon group, an alkenyl group, an aralkyl group or an aryl group. Two groups out of R 8 to R 10 may be bonded to form a ring.
- the alkyl group is preferably an alkyl group having 1 to 4 carbon atoms such as methyl group, ethyl group, propyl group, isopropyl group, n-butyl group, sec-butyl group and tert-butyl group.
- the hydrocarbon group include those having 3 to 30 carbon atoms, specifically, cyclopropyl group, cyclopentyl group, cyclohexyl group, adamantyl group, norbornyl group, bornyl group, tricyclodecanyl group, dicyclohexane.
- Pentenyl group nobornane epoxy group, menthyl group, isomenthyl group, neomenthyl group, tetracyclododecanyl group, and those having 3 to 30 carbon atoms such as steroid residues are preferable.
- alkenyl group vinyl group, propenyl group, Preferred are those having 2 to 4 carbon atoms such as allyl group and butenyl group.
- the aryl group phenyl group, xylyl group, toluyl group are preferable.
- Cumenyl group, naphthyl group preferably having from 6 to 14 carbon atoms, such as anthracenyl group, which may have a substituent.
- the aralkyl group include those having 7 to 20 carbon atoms, which may have a substituent. Examples include a benzyl group, a phenethyl group, and a cumyl group.
- examples of the substituent further included in the organic group include a hydroxyl group, a halogen atom (preferably fluorine), a nitro group, a cyano group, the alkyl group or alicyclic hydrocarbon group, a methoxy group, an ethoxy group, and a hydroxy group.
- R a represents an alkyl group having 1 to 4 carbon atoms or a perfluoroalkyl group.
- Each R b independently represents a hydrogen atom, an alkyl or perfluoroalkyl group having 1 to 4 carbon atoms, a hydroxyl group, a carboxylic acid group, an alkyloxycarbonyl group, an alkoxyl group, or the like.
- n represents an integer of 1 to 4.
- Examples of the alkoxycarbonyl group represented by the general formula (d) R 6 —O—C ( ⁇ O) — include a tert-butoxycarbonyl group, a tert-amyloxycarbonyl group, a methoxycarbonyl group, an ethoxycarbonyl group, i -A propoxycarbonyl group, a cyclohexyloxycarbonyl group, an isobornyloxycarbonyl group, an adamantaneoxycarbonyl group and the like can be exemplified.
- Examples of the acetal group represented by the general formula (e) R 6 —O—CHR 7 — include a methoxymethyl group, an ethoxymethyl group, a 1-ethoxyethyl group, a 1-butoxyethyl group, and a 1-isobutoxyethyl group.
- the acetal group obtained by adding vinyl ethers with respect to a hydroxyl group can be mentioned.
- Examples of the tertiary hydrocarbon group represented by the general formula (f) CR 8 R 9 R 10 — include tert-butyl group, tert-amyl group, 1,1-dimethylpropyl group, 1-ethyl-1- Methylpropyl group, 1,1-dimethylbutyl group, 1-ethyl-1-methylbutyl group, 1,1-diethylpropyl group, 1,1-dimethyl-1-phenylmethyl group, 1-methyl-1-ethyl-1 -Phenylmethyl group, 1,1-diethyl-1-phenylmethyl group, 1-methylcyclohexyl group, 1-ethylcyclohexyl group, 1-methylcyclopentyl group, 1-ethylcyclopentyl group, 1-isobornyl group, 1-methyladamantyl Group, 1-ethyladamantyl group, 1-isopropyladamantyl group, 1-isopropylnorbornyl group,
- each methyl group (CH 3 ) may independently be an ethyl group.
- one or more of the ring carbons may have a substituent.
- Examples of the silyl group represented by the general formula (g) SiR 8 R 9 R 10 — include, for example, trimethylsilyl group, ethyldimethylsilyl group, methyldiethylsilyl group, triethylsilyl group, i-propyldimethylsilyl group, methyldi -I-propylsilyl group, tri-i-propylsilyl group, tert-butyldimethylsilyl group, methyldi-tert-butylsilyl group, tri-tert-butylsilyl group, phenyldimethylsilyl group, methyldiphenylsilyl group, triphenylsilyl group Etc.
- acyl group represented by the general formula (h) R 6 —C ( ⁇ O) — examples include acetyl group, propionyl group, butyryl group, heptanoyl group, hexanoyl group, valeryl group, pivaloyl group, isovaleryl group, laurylyl Group, myristoyl group, palmitoyl group, stearoyl group, oxalyl group, malonyl group, succinyl group, glutaryl group, adipoyl group, piperoyl group, suberoyl group, azelaoil group, sebacoyl group, acryloyl group, propioroyl group, methacryloyl group, crotonoyl group, Oleoyl group, maleoyl group, fumaroyl group, mesaconoyl group, camphoroyl group, benzoyl group, phthaloyl group, isophthaloyl group, ter
- each methyl group (CH 3 ) may independently be an ethyl group.
- the acid labile group may be a tertiary alkyl group such as tert-butyl group or tert-amyl group, 1-ethoxyethyl Groups, alkoxyethyl groups such as 1-butoxyethyl group, 1-isobutoxyethyl group and 1-cyclohexyloxyethyl group, alkoxymethyl groups such as methoxymethyl group and ethoxymethyl group, and the adamantyl structure and isobornane structure described above
- Preferred examples include an acid labile group containing an alicyclic hydrocarbon group such as, an acid labile group containing a lactone structure, and the like.
- the neutral hydroxyl group-containing group is a monovalent organic group in which one or more of the hydrogen atoms bonded to the carbon atom in the organic group described in (iv) are substituted with a hydroxyl group. It is a group.
- the hydroxyl group is preferably an almost neutral hydroxyl group.
- the hydroxyl group When introduced into a resist resin, the hydroxyl group usually does not participate in the function of enhancing the solubility of the resin in an alkaline solution, and an ester bond with a crosslinking agent described later. It means a hydroxyl group having a function of cross-linking by a reaction involving a hydroxyl group such as an ether bond or a ureido bond to render a resin component soluble in an alkaline aqueous solution insoluble or hardly soluble.
- the monovalent organic group is represented by the general formula (4). -W 2- (OH) p (4)
- W 2 represents an alicyclic hydrocarbon group, an aliphatic hydrocarbon group, or a p + 1 valent organic group in combination thereof, and p represents an integer of 1 to 3.
- the alicyclic hydrocarbon group for W 2 may be monocyclic or polycyclic, but is preferably a polycyclic group and is preferably saturated.
- the alicyclic hydrocarbon group preferably has 5 to 15 carbon atoms.
- the aliphatic hydrocarbon group is a group obtained by removing p + 1 hydrogen atoms from a saturated hydrocarbon with or without branching, and p is preferably 1.
- the aliphatic hydrocarbon group is an organic group having 1 to 10 carbon atoms, preferably an organic group having 1 to 8 carbon atoms, and more preferably an ethylene group or a methylene group.
- the halogenated alkylene group is a group having 1 to 4 carbon atoms (preferably an ethylene group or a methylene group) in which part or all of the hydrogen atoms of the aliphatic hydrocarbon group are substituted with a halogen atom, preferably a fluorine atom.
- a substituted group is a group having 1 to 4 carbon atoms (preferably an ethylene group or a methylene group) in which part or all of the hydrogen atoms of the aliphatic hydrocarbon group are substituted with a halogen atom, preferably a fluorine atom.
- R 3 can be selected within the above range depending on the purpose of adjusting the characteristics when a fluorine-containing polymer compound obtained by polymerization is used as a resist composition.
- the monovalent organic group represented by the general formula (4) is particularly preferably a group represented by the following general formula (8).
- R 11 represents a hydrogen atom, an alkyl group or an alkoxyl group having 1 to 5 carbon atoms, and p is an integer of 1 to 3.
- the alkyl group of R 11 is preferably an alkyl group having 1 to 5 carbon atoms.
- a lower alkyl group is preferred, and a methyl group is more preferred.
- the alkoxyl group of R 11 is represented by a residue in which an oxygen atom is bonded to the alkyl group, and is linear or branched, and the carbon number thereof is preferably 1 to 5, and more preferably 1 to 3. .
- p is an integer of 1 to 3, and is preferably 1.
- the bonding position of the hydroxyl group is not particularly limited, but is preferably bonded to the position 3 of the adamantyl group.
- R 3 having an alcoholic hydroxyl group examples include a hydroxymethyl group, a 2-hydroxyethyl group, a 3-hydroxypropyl group, a 4-hydroxybutyl group, a 5-hydroxypentyl group, and 2,2-dimethyl-3-hydroxy.
- a propyl group etc. are mentioned.
- the organic group (iv) of R 3 is not particularly limited as long as it is an organic group that does not contain an acid labile group and a neutral hydroxyl group.
- Such an organic group is a monovalent organic group selected from a linear, branched or cyclic alkyl group having 1 to 20 carbon atoms or an aryl group, and the alkyl group and the aryl group have a substituent.
- the substituent may be a linear, branched or cyclic alkyl group or aryl group having 1 to 20 carbon atoms.
- the tertiary alkyl group generally functions as an acid labile group and therefore does not correspond to the organic group here. Any number of hydrogen atoms bonded to the carbon atom of R 3 may be substituted with a fluorine atom.
- the alkyl group is a linear, branched or cyclic alkyl group having 1 to 20 carbon atoms, preferably having 1 to 12 carbon atoms.
- alkyl group substituted with a fluorine atom examples include trifluoromethyl group, pentafluoroethyl group, 2,2,2-trifluoroethyl group, n-heptafluoropropyl group, 2,2,3,3,3-pentafluoro. Mention may be made of lower fluoroalkyl groups such as propyl, 3,3,3-trifluoropropyl and hexafluoroisopropyl.
- the substituent for the linear or branched alkyl group may be a cyclic alkyl group.
- a cyclohexyl group, an adamantyl group, and the like which will be described later can be used without limitation, and they may further have a substituent as in the examples described later.
- the cyclic alkyl group is preferably a monocyclic group having 3 to 12 ring carbon atoms, more preferably 3 to 7 ring carbon atoms.
- preferred are cyclopropyl group, cyclobutyl group, cyclopentyl group, cyclohexyl group, cycloheptyl group, cyclooctyl group, cyclodecanyl group, cyclododecanyl group and 4-tert-butylcyclohexyl group.
- Examples of the polycyclic group include adamantyl group having 7 to 15 ring carbon atoms, noradamantyl group, decalin residue, tricyclodecanyl group, tetracyclododecanyl group, norbornyl group, cedrol group and the like. .
- An adamantyl group, a decalin residue, a norbornyl group, a cedrol group, a cyclohexyl group, a cycloheptyl group, a cyclooctyl group, a cyclodecanyl group, a cyclododecanyl group, a tricyclodecanyl group and the like are preferable.
- the cyclic alkyl groups may be bonded to each other to form a spiro ring, and a spiro ring having 3 to 6 carbon atoms is preferable.
- One or two or more of the ring carbon hydrogen atoms of these cyclic alkyl groups are each independently one or two or more of the linear, branched or cyclic alkyl groups having 1 to 20 carbon atoms. Examples thereof include those in which a hydrogen atom of a carbon-hydrogen bond is substituted with a fluorine atom or a trifluoromethyl group.
- the linear, branched or cyclic alkyl group having 1 to 20 carbon atoms as a substituent is preferably a lower alkyl group, more preferably a group consisting of a methyl group, an ethyl group, a propyl group and an isopropyl group.
- An alkyl group selected from These alkyl groups can be substituted with halogen atoms, especially fluorine atoms.
- the method for producing the fluorine-containing unsaturated carboxylic acid amides represented by the general formula (1) of the present invention is not limited.
- a fluorine-containing unsaturated carboxylic acid halide can be produced by the following reaction formulas [1] to [4].
- R x4 —W 3 —O— and R 2 have the same meanings as R 0 and R 2 in the general formula (1), respectively.
- R x1 , R x2 and R x3 each independently represent a monovalent organic group.
- R x1 may be a hydrogen atom.
- R x1, R x2 corresponds to R 4, R 5 when W 1 in the general formula (1) each is a substituted methylene group represented by the general formula (3), specific definitions R 4, The definition for R 5 applies.
- R x1 and R x2 are particularly preferably lower alkyl groups.
- methyl group, ethyl group, propyl group, butyl group, cyclopentyl group, cyclohexyl group, norbornyl group, adamantyl group, and these hydrogen atoms are fluorine.
- R x1 and R x2 may be bonded to each other to form a cyclic group such as a cyclopentyl group, a cyclohexyl group, or a cycloheptyl group.
- R x3 is an ester protecting group.
- R x5 , R x6 and R x7 correspond to specific embodiments of R 3 in the general formula (1).
- W 3 and W 4 represent a divalent linking group, and W 3 —O—CR x1 R x2 corresponds to an embodiment of W 1 in the general formula (1).
- Reaction formula [1] A halogen-containing carboxylic acid ester (i) having at least one fluorine atom and at least one halogen atom (excluding a fluorine atom) at the ⁇ -position and a carbonyl compound (ii) Reaction to obtain hydroxycarboxylic acid ester (iii) by reacting in the state (Reformatsky reaction)
- Reaction formula [2] Reaction to obtain hydroxycarboxylic acid (iv) by hydrolyzing the hydroxycarboxylic acid ester (iii) obtained by reaction formula [1].
- Reaction formula [3] Unsaturated by reacting hydroxycarboxylic acid (iv) obtained by reaction formula [2] with carboxylic acid, carboxylic anhydride or carboxylic acid halide (v) having a polymerizable double bond Reaction to obtain carboxylic acid (vi).
- Reaction formula [4] Reaction in which unsaturated carboxylic acid (vi) obtained by reaction formula [3] is halogenated using a halogenating agent such as thionyl chloride to obtain unsaturated carboxylic acid halide (vii).
- a halogenating agent such as thionyl chloride
- Reaction formula [5-1] Reaction in which unsaturated carboxylic acid halide (vii) obtained by reaction formula [4] is reacted with aqueous ammonia or ammonium salt to obtain unsaturated carboxylic acid amide (viii).
- Reaction Formula [5-2] Fluorine-containing unsaturated N- (hydroxyalkyl) -substituted carboxylic acid by reacting unsaturated acid halide (vii) obtained by Reaction Formula [4] with hydroxyamines (ix) Reaction to obtain amide (x).
- Reaction formula [5-3] By reacting the unsaturated acid halide (vii) obtained by reaction formula [4] with a primary amine, fluorine-containing unsaturated N-substituted carboxylic acid amide (x) is obtained. It is a reaction to get.
- Reaction formula [6] Fluorine-containing unsaturated N-substituted carboxylic acid amide (xiv) by reacting unsaturated carboxylic acid amide (viii) obtained by reaction formula [5-1] with halides (xiii) Get a reaction.
- Fluorine-containing unsaturated N, N— is obtained by reacting the fluorine-containing unsaturated N-substituted carboxylic acid amide (viv) obtained by reaction formula [5-1] with a halide (xv). This is a reaction to obtain a disubstituted carboxylic acid amide (xvi).
- the organic solvent used in the reaction formula [1] or [3] is not required to participate in the reaction under the respective reaction conditions.
- aliphatic hydrocarbons such as pentane, hexane, heptane, benzene, toluene
- Aromatic hydrocarbons such as xylene, acetonitrile, propionitrile, phenylacetonitrile, nitriles such as isobutyronitrile, benzonitrile, dimethylformamide, dimethylacetamide, methylformamide, formamide, hexamethylphosphoric triamide, etc.
- lower ethers such as acid amides, tetrahydrofuran, 1,2-dimethoxyethane, 1,4-dioxane, diethyl ether, 1,2-epoxyethane, dibutyl ether, tert-butyl methyl ether, substituted tetrahydrofuran, and the like.
- Tetrahydrofuran dimethyl formaldehyde.
- the amount of the organic solvent used is about 1 to 100 parts by weight, preferably 1 to 10 parts by weight per 1 part by weight of the starting material. It is preferable that the organic solvent that can be used in the reaction formula [1] removes water as much as possible. More preferably, the water content in the organic solvent is 50 ppm or less.
- Zinc used in the reaction formula [1] is preferably activated and used in a known method.
- a method of reducing zinc salt such as zinc chloride with potassium, magnesium, lithium, etc. to obtain metallic zinc an activation method of treating metallic zinc with hydrochloric acid, treating metallic zinc with acetic acid, copper salt or silver salt ,
- a method of activating zinc by alloying with copper or silver a method of activating zinc by ultrasonic, a method of activating zinc by stirring zinc with chlorotrimethylsilane in ether, non-
- Zinc may be in any shape such as powder, granular, lump, porous, cutting waste, and linear.
- the reaction temperature is about ⁇ 78 to 120 ° C., and the reaction time varies depending on the reaction reagent, but it is usually convenient to carry out in about 10 minutes to 20 hours.
- the reaction pressure may be around normal pressure, and the other reaction conditions may be similar reaction conditions using metal zinc known to those skilled in the art.
- Reaction formula [2] consists of hydrolysis with water in the presence of a base.
- the base used include trimethylamine, triethylamine, diisopropylethylamine, tri-n-propylamine, tri-n-butylamine, dimethyllaurylamine, dimethylaminopyridine, N, N-dimethylaniline, dimethylbenzylamine, 1,8-diazabicyclo ( 5,4,0) undecene-7,1,4-diazabicyclo (2,2,2) octane, pyridine, 2,4,6-trimethylpyridine, pyrimidine, pyridazine, 3,5-lutidine, 2,6-lutidine
- Organic bases such as 2,4-lutidine, 2,5-lutidine, and 3,4-lutidine
- inorganic bases such as sodium hydroxide, potassium hydroxide, sodium carbonate, and calcium hydroxide.
- the amount of the base used may be 1 mol or more with respect to 1 mol of the substrate, usually 1 to 10 mol, particularly preferably 1 to 5 mol.
- reaction temperature varies depending on the reaction reagent, but is about ⁇ 78 to 120 ° C.
- reaction time varies depending on the reaction reagent, but it is usually convenient to carry out in about 10 minutes to 20 hours. is there.
- the reaction pressure may be around normal pressure, and other reaction conditions may be similar reaction conditions known to those skilled in the art.
- the amount of the carboxylic acid, carboxylic anhydride or carboxylic acid halide (v) having a polymerizable double bond in the reaction formula [3] is usually 0.8 to 5 mol per 1 mol of the substrate.
- the amount is preferably 1 to 3 mol, particularly preferably 1 to 2 mol.
- an acid can also be used as a catalyst.
- the acid used here include hydrochloric acid, methanesulfonic acid, trifluoromethanesulfonic acid, and trifluoroacetic acid. Of these, methanesulfonic acid and trifluoromethanesulfonic acid are preferred.
- the amount of the acid used in the reaction formula [3] may be 1 mol or less, preferably 0.1 to 1 mol, particularly preferably 0.1 to 0.5 mol, relative to 1 mol of the substrate. It is.
- halogenating agent in the reaction formula [4] examples include thionyl halide, oxalyl halogenide, phosphorus trihalide, phosphorus pentahalide, phosphorus oxyhalide, carbonyl halide, and trihalomethyl.
- examples thereof include one and / or a mixture of two or more selected from halogenating agents such as haloformates.
- halogen is chlorine, thionyl chloride, sulfuryl chloride, phosphorus trichloride, phosphorus pentachloride, phosphoric trichloride, oxalyl chloride and the like can be mentioned.
- thionyl chloride and phosphoric acid trichloride are preferable.
- the amount of the chlorinating agent used may be 1 mol or more per 1 mol of the substrate, usually 1 to 10 mol, particularly preferably 1 to 5 mol.
- ammonium (NH 4 + ) in Reaction Formula [5-1] examples include ammonia, ammonium carbonate, ammonium chloride, ammonium sulfate, ammonium nitrate, ammonium acetate, and ammonium phosphate. Of these, ammonia and ammonia carbonate are preferred.
- the amount of ammonium (NH 4 + ) used may be 1 mol or more, preferably 1 to 10 mol, particularly preferably 1 to 5 with respect to 1 mol of the substrate. Is a mole.
- the hydroxyamine (H 2 NW 4 OH) W 4 represented by the general formula (ix) used in the reaction formula [5-2] has the same meaning as W 2 described above.
- the amount of the hydroxyamine used may be 1 mol or more per 1 mol of the substrate, usually 1 to 10 mol, particularly preferably 1 to 5 mol. .
- R x5 Used in the reaction formula [5-3], the amine represented by the general formula (xi) (NH 2 R x5 ), R x5 is synonymous with R x5 described above.
- the amount of the amine used may be 1 mol or more per 1 mol of the substrate, usually 1 to 10 mol, particularly preferably 1 to 5 mol.
- R x5 and R x6 are the above-described R x5 and Synonymous with Rx6 .
- the amount of halide used may be 1 mol or more, preferably 1 to 10 mol, particularly preferably 1 to 5 mol, relative to 1 mol of the substrate. is there.
- reaction steps of the reaction formulas [1] to [7] purification operations such as washing, solvent separation, and drying can be performed.
- Repeating unit (a) represented by general formula (2) Is a repeating unit formed by cleavage of the double bond of the unsaturated double bond-containing group (R 0 ) of the fluorine-containing unsaturated carboxylic acid amide represented by the general formula (1) It is a fluorine-containing polymer compound containing (a). In this polymerization reaction, the bond and structure other than the polymerizable double bond do not change.
- the repeating unit (a) may be single, or may contain other repeating units.
- Repeat unit is appropriate for adjusting resist dry etching resistance, suitability for alkaline developer (standard developer), substrate adhesion, resist profile, and general resist performance such as resolution, heat resistance, sensitivity, etc. Is set.
- R 3 of the fluorinated carboxylic acid amide represented by the general formula (1) may be a hydrogen atom, an acid labile group, a neutral hydroxyl group-containing group, or a group other than these
- the corresponding repeating unit (a) represented by the general formula (2) obtained in the case of 3 is represented by repeating unit (a-1), repeating unit (a-2), repeating unit (a-3), and repeating unit, respectively. This is abbreviated as (a-4).
- the constitutional ratio of the repeating unit (a-1) to the other repeating units is the repeating unit ( a-1) is 0.1 to 70 mol%, preferably 1 to 60 mol%, more preferably 5 to 40 mol%.
- the repeating unit (a-1) is less than 0.1 mol%, the base resin cannot be sufficiently dissolved in an unexposed or exposed alkaline developer, and swelling or pattern collapse occurs during development.
- it exceeds 70% the function of changing the solubility as a positive type or negative type base resin is lowered, and a pattern with good rectangularity cannot be formed.
- the repeating unit other than the repeating unit (a-1) includes at least a repeating unit having a positive function having an acid labile group or a negative function having a crosslinking site, and the repeating unit (b) described later.
- the repeating unit having a positive type having an acid labile group or a negative type having a crosslinking site is 10 to 100 mol% of the repeating units excluding the repeating unit (a-1), and 15 to 80 mol%. 20 to 70 mol% is more preferable. If it is less than 10 mol%, sufficient solubility or crosslinking cannot be obtained, and the basic performance as a resist cannot be achieved, which is not preferable.
- the repeating unit (b) is the remaining amount and is not necessarily required, but it is preferable to use an appropriate amount in order to improve adhesion and etching resistance.
- the constitutional ratio of the repeating unit (a-2) to the other repeating units is such that the repeating unit (a-1) is 0.1 to 70 mol%, and 1 to 60 mol% is preferable, and 5 to 40 mol% is more preferable.
- the repeating unit (a-2) is less than 0.1 mol%, the base resin cannot be sufficiently dissolved in an alkali developer after exposure, and a high-definition pattern cannot be formed. Exceeding this is not preferable because it is difficult to maintain the performance required for resist such as substrate adhesion and etching resistance, and a pattern with good rectangularity cannot be formed.
- the repeating unit other than the repeating unit (a-2) can include the repeating unit (a-1), the repeating unit (a-4), and the repeating unit (b) described later.
- the repeating unit (a-1) a part or all of the repeating unit having a group imparting solubility such as a hydroxyl group and a carboxylic acid group in the repeating unit (b) can be used.
- the constitutional ratio of the repeating unit (a-3) to the other repeating units is such that the repeating unit (a-3) is 0.1 to 70 mol%, and 1 to 60 mol% is preferable, and 5 to 40 mol% is more preferable.
- the repeating unit (a-2) is less than 0.1 mol%, sufficient solubility of the base resin in an unexposed alkaline developer cannot be obtained, and even when a pattern is formed as a negative resist, it can be exposed to light. Not enough crosslinking and curing is insufficient and swelling and pattern collapse occur during development, and a high-definition pattern cannot be formed.
- it exceeds 70% performance required for resist such as substrate adhesion and etching resistance Is not preferable because it is difficult to maintain the pattern and a pattern with good rectangularity cannot be formed.
- the repeating unit other than the repeating unit (a-3) can include the repeating unit (a-1), the repeating unit (a-4), and the repeating unit (b) described later.
- the repeating unit (a-1) a part or all of the repeating unit having a group imparting solubility such as a carboxylic acid group in the repeating unit (b) can be used.
- the repeating unit (a-4) does not have a function as a positive type or negative type resist in the resist and imparts solubility, but the entire repeating unit in the base resin does not have a function.
- 0.1 to 70 mol% preferably 1 to 60 mol%, more preferably 5 to 40 mol%.
- the base resin is not limited to a resin having a positive type or negative type acid labile group or a crosslinking site, and is used together with a resin having a repeating unit (a-2) or a repeating unit (a-3). It can be used in parallel with the base resin.
- the repeating unit (a-4) is less than 0.1 mol%, the effect of imparting solubility to the base resin is not sufficient, and the significance of addition is not recognized, and when it exceeds 70%, the positive type or Since the function as a negative resist cannot be sufficiently provided, it is not preferable.
- the molecular weight of the fluorine-containing polymer compound of the present invention is 1,000 to 1,000,000, preferably 2,000 to 500,000, as a weight average molecular weight measured by gel permeation chromatography (GPC). If the weight average molecular weight is less than 1,000, the strength of the coating film is insufficient, and if it exceeds 1,000,000, the solubility in a solvent is lowered, and it becomes difficult to obtain a smooth coating film, which is not preferable.
- the dispersity (Mw / Mn) is preferably 1.01 to 5.00, more preferably 1.01 to 4.00, particularly preferably 1.01 to 3.00, and most preferably 1.10 to 2.50. preferable.
- the fluorine-containing polymer compound has dry etching resistance, standard developer suitability, substrate adhesion, resist profile, and general required characteristics of resist, such as resolution, heat resistance, and sensitivity.
- the repeating unit (b) can be contained as various repeating units.
- Examples of such a repeating unit (b) include, but are not limited to, repeating structural units corresponding to the following monomers.
- the performance required for the resin in particular, (1) solubility in coating solvents, (2) film-forming properties (glass transition point), (3) alkali developability, (4) film slippage (hydrophobic, alkaline) Fine adjustments such as (selection of soluble group), (5) adhesion of the unexposed part to the substrate, and (6) dry etching resistance are possible.
- the repeating unit (b) is preferably a repeating unit based on acrylic acid or methacrylic acid ester having a lactone group and a repeating unit based on acrylic acid or methacrylic acid ester having a polar group. In that case, those containing 10 to 60% of repeating units based on the lactone group-containing monomer are preferred, and those containing 20 to 50% are more preferred.
- repeating unit (b) will be described in the form of a monomer, which is a form before the polymerizable double bond is cleaved to become a repeating unit.
- acrylic ester fluorine-containing acrylic ester, methacrylic ester, fluorine-containing methacrylate ester, styrene compound, fluorine-containing styrene compound, vinyl ethers, fluorine-containing vinyl ether , Allyl ethers, fluorine-containing allyl ethers, acrylamides (excluding those corresponding to general formula (1)), methacrylamides (excluding those corresponding to general formula (1)), vinyl esters , Allyl esters, olefins, fluorine-containing olefins, norbornene compounds, fluorine-containing norbornene compounds, sulfur dioxide, and vinyl silanes.
- one or more kinds of monomers can be used in combination.
- the ester moiety can be used without any particular limitation. If known compounds are exemplified, methyl acrylate or methacrylate, ethyl acrylate or methacrylate, n-propyl acrylate or methacrylate, isopropyl acrylate or methacrylate, n-butyl acrylate or methacrylate, isobutyl acrylate or methacrylate, tert-butyl acrylate or methacrylate, amyl acrylate or methacrylate, n-hexyl acrylate or methacrylate, n-octyl acrylate or methacrylate, 2-ethylhexyl acrylate or methacrylate, benzyl methacrylate acrylate or methacrylate , Chlorbenzylme Acrylate or methacrylate, octyl acrylate or methacrylate, 2-hydroxyethyl
- the fluorine-containing acrylic acid ester and fluorine-containing methacrylate ester that can be used in the present invention are acrylic acid esters or methacrylic acid esters containing fluorine at the ester site, and a cyano group or trifluoromethyl group is introduced at the ⁇ -position. It may be.
- the monomer containing fluorine at the ester site those in which a part of the ester site described as the acrylic acid ester or methacrylic acid ester is fluorinated can be used without particular limitation.
- an acrylic ester or methacrylic ester having a fluorine-containing cycloheptane ring, a fluorine-containing norbornel group, a fluorine-containing norbornel group, a fluorine-containing adamantyl group, or the like.
- fluorinated tert-butyl ester at the ester site acrylate or methacrylic acid ester having a cyclohexyl group or norbornyl group substituted with a hexafluoroisopropanol group can also be used.
- esters of acrylic acid, methacrylic acid, ⁇ , ⁇ , ⁇ -trifluoroacrylic acid ( ⁇ -trifluoromethacrylic acid) having a lactone group are preferred.
- the lactone any group can be used as long as it contains a lactone structure, but it is preferably a group containing a 5- to 7-membered ring lactone structure. Those in which other ring structures are condensed to form a structure are preferred.
- a lactone group By using a lactone group, line edge roughness and development defects are improved.
- examples of the lactone group include structures having the following formulas (9) and (10).
- R a represents an alkyl group having 1 to 4 carbon atoms or a perfluoroalkyl group.
- Each R b independently represents a hydrogen atom, an alkyl or perfluoroalkyl group having 1 to 4 carbon atoms, a hydroxyl group, a carboxylic acid group, an alkyloxycarbonyl group, an alkoxyl group, or the like.
- n represents an integer of 1 to 4.
- each R b independently represents a hydrogen atom, an alkyl group having 1 to 4 carbon atoms or a perfluoroalkyl group, a hydroxyl group, a carboxylic acid group, an alkyloxycarbonyl group, an alkoxyl group, or the like.
- n represents an integer of 1 to 4.
- the lactone group is specifically exemplified below.
- each methyl group (CH 3 ) may independently be an ethyl group.
- vinyl ethers or allyl ethers include those having an alkyl group having 1 to 30 carbon atoms, a fluoroalkyl group, or an alicyclic hydrocarbon group as a substituent. These further have a halogen atom (fluorine, Chlorine, bromine), a hydroxyl group, an amino group, an aryl group, an alkyl group, and an alicyclic hydrocarbon group are preferred.
- alkyl vinyl ether examples include methyl vinyl ether, ethyl vinyl ether, propyl vinyl ether, isopropyl vinyl ether, butyl vinyl ether, isobutyl vinyl ether, sec-butyl vinyl ether, tert-butyl vinyl ether, pentyl vinyl ether, hexyl vinyl ether, octyl vinyl ether, decyl vinyl ether. And dodecyl vinyl ether. Mention may be made of cyclopentyl vinyl ether, cyclohexyl vinyl ether and norbornel groups, adamantyl vinyl ether, butyl lactone vinyl ether and the like.
- Perfluoroalkyl vinyl ethers include perfluoromethyl vinyl ether, perfluoroethyl vinyl ether, perfluoropropyl vinyl ether, perfluoroisopropyl vinyl ether, perfluorobutyl vinyl ether, perfluoroisobutyl vinyl ether, perfluoro-sec-butyl vinyl ether, perfluoro- Examples thereof include tert-butyl vinyl ether, perfluoropentyl vinyl ether, perfluorohexyl vinyl ether, perfluorooctyl vinyl ether, and perfluorododecyl vinyl ether.
- vinyl ethers having a hydroxyl group hydroxymethyl vinyl ether, 2-hydroxyethyl vinyl ether, 3-hydroxypropyl vinyl ether, 4-hydroxybutyl vinyl ether, 5-hydroxypentyl vinyl ether, 6-hydroxyhexyl vinyl ether, diethylene glycol monovinyl ether, polyethylene Examples include glycol monovinyl ether and 1,4-cyclohexanedimethanol vinyl ether.
- ethylhexyl vinyl ether methoxyethyl vinyl ether, ethoxyethyl vinyl ether, chloroethyl vinyl ether, 1-methyl-2,2-dimethylpropyl vinyl ether, 2-ethylbutyl vinyl ether, diethylene glycol vinyl ether, dimethylaminoethyl vinyl ether, diethylaminoethyl vinyl ether, butylaminoethyl
- allyl ethers include methyl allyl ether, ethyl allyl ether, propyl allyl ether, butyl allyl ether, benzyl allyl ether, and cyclohexyl allyl ether.
- allyl ethers having a hydroxyl group include alkylene glycol monoallyl ethers such as ethylene glycol monoallyl ether, propylene glycol monoallyl ether, diethylene glycol monoallyl ether, polyethylene glycol monoallyl ether, and hydroxybutyl allyl ether, or glycerin monoallyl.
- allyl ethers of polyhydric alcohols such as allyl ether.
- vinyl ethers and allyl ethers having an epoxy group can be mentioned.
- examples of the vinyl ether or allyl ether containing a ⁇ -ketoester group include allyl acetoacetate.
- the vinyl ether containing silicon which has hydrolysable groups, such as a trimethoxysilyl vinyl ether, can also be mentioned.
- allyl esters examples include allyl acetate, allyl caproate, allyl caprylate, allyl laurate, allyl palmitate, allyl stearate, allyl benzoate, allyl acetoacetate, allyl lactate, and the like.
- Vinyl esters include vinyl butyrate, vinyl isobutyrate, vinyl trimethyl acetate, vinyl diethyl acetate, vinyl valate, vinyl caproate, vinyl chloroacetate, vinyl dichloroacetate, vinyl methoxyacetate, vinyl butoxyacetate, vinylacetate. Examples thereof include acetate, vinyl lactate, vinyl- ⁇ -phenylbutyrate, vinylcyclohexylcarboxylate, and the like.
- Dialkyl itaconates dimethyl itaconate, diethyl itaconate, dibutyl itaconate, etc., dialkyl esters or monoalkyl esters of fumaric acid; dibutyl fumarate, alkyl esters of vinyl acetate; vinyl ethyl acetate, etc. it can.
- Examples of the olefin or fluorine-containing olefin include ethylene and propylenecyclohexene.
- Examples of the fluoroolefin include vinyl fluoride, vinylidene fluoride, trifluoroethylene, chlorotrifluoroethylene, tetrafluoroethylene, hexafluoropropylene, hexafluoroisobutene, and octafluoro. Examples thereof include cyclopentene.
- the styrenic compound that can be used in the present invention is a compound in which a vinyl group is bonded to an aromatic ring.
- the structure of the styrene compound is introduced into the fluorine-containing polymer compound of the present invention, for example, p-butoxycarbonyloxystyrene is copolymerized and then the butoxycarbonyl moiety is converted to a hydroxyl group.
- the norbornene compound or fluorine-containing norbornene compound is a norbornene monomer having a monocyclic or polycyclic structure.
- Norbornene compounds obtained by DielsDiAlder addition reaction of unsaturated compounds such as methacrylic acid esters, fluorine-containing acrylic acid esters, and fluorine-containing methacrylic acid esters with cyclopentadiene or cyclohexadiene are preferably employed.
- acrylamides or methacrylamides include acrylamide, methacrylamide, N-alkyl acrylamide or methacrylamide (alkyl groups having 1 to 10 carbon atoms such as methyl, ethyl, propyl, butyl, tert -Butyl group, heptyl group, octyl group, cyclohexyl group, hydroxyethyl group, etc.), N, N-dialkylacrylamide or acrylamide (wherein the alkyl group has 1 to 10 carbon atoms such as methyl group, ethyl group, Butyl, isobutyl, ethylhexyl, cyclohexyl, etc.), N-hydroxyethyl-N-methylacrylamide or methacrylamide, N-methylolacrylamide, N-methylolmethacrylamide, diacetone acrylic And unsaturated amides, such as de the like.
- acrylic acid methacrylic acid, vinyl sulfonic acid, maleic acid, fumaric acid, crotonic acid, itaconic acid, maleimide, acrylonitrile, methacrylonitrile, maleilonitrile, alkoxysilane-containing vinyl silane, allyloxyethanol, etc. It is mentioned as a comonomer.
- fluorine-containing polymer compound according to claim 1 of the present invention at least one of them is acrylic acid ester, fluorine-containing acrylic acid ester, methacrylic acid ester, fluorine-containing methacrylate ester, styrenic compound, fluorine-containing styrene. It is preferable to use a system compound.
- the monomer is not particularly limited as long as it is a copolymerizable monomer, but a monomer having no multiple bond or aromatic ring is preferred for use with a high energy beam or electron beam of 300 nm or less.
- the polymerization method of the fluorine-containing polymer compound according to the present invention is not particularly limited as long as it is a generally used method, but radical polymerization, ionic polymerization, etc. are preferable, and in some cases, coordination anion polymerization, living anion polymerization Cationic polymerization, ring-opening metathesis polymerization, vinylene polymerization, vinyl addition, and the like can also be used.
- Radical polymerization is carried out in the presence of a radical polymerization initiator or a radical initiator by a known polymerization method such as bulk polymerization, solution polymerization, suspension polymerization or emulsion polymerization, and is either batch-wise, semi-continuous or continuous. This can be done by operation.
- a radical polymerization initiator or a radical initiator by a known polymerization method such as bulk polymerization, solution polymerization, suspension polymerization or emulsion polymerization, and is either batch-wise, semi-continuous or continuous. This can be done by operation.
- the radical polymerization initiator is not particularly limited, but examples include azo compounds, peroxide compounds, and redox compounds. Particularly, azobisisobutyronitrile, tert-butyl peroxypivalate, Di-tert-butyl peroxide, i-butyryl peroxide, lauroyl peroxide, succinic acid peroxide, dicinnamyl peroxide, di-n-propyl peroxydicarbonate, tert-butyl peroxyallyl monocarbonate, benzoyl peroxide, Hydrogen peroxide, ammonium persulfate and the like are preferable.
- the reaction vessel used for the polymerization reaction is not particularly limited.
- a polymerization solvent may be used.
- the polymerization solvent those which do not inhibit radical polymerization are preferable, and typical ones are ester systems such as ethyl acetate and n-butyl acetate, ketone systems such as acetone and methyl isobutyl ketone, and hydrocarbons such as toluene and cyclohexane.
- alcohol solvents such as methanol, isopropyl alcohol, and ethylene glycol monomethyl ether. It is also possible to use a solvent such as water, ether, cyclic ether, chlorofluorocarbon, and aromatic.
- the reaction temperature of the copolymerization reaction is appropriately changed depending on the radical polymerization initiator or the radical polymerization initiator, and is usually preferably 20 to 200 ° C, particularly preferably 30 to 140 ° C.
- the fluorine-containing polymer compound having many fluorine atoms helps to improve the transparency of the coating film, and the one having a cyclic structure can further impart characteristics such as etching resistance and a high glass transition point. It is possible to use properly for each application field of the present invention.
- the fluorine-containing polymer compound of the present invention is used for a specific purpose depending on the type of R 3 bonded to the end of the side chain as described above.
- a resin having an acid labile group that is desorbed by the presence of an acid generated from an acid generator by light irradiation and changes the resin insoluble in an alkaline aqueous solution before light irradiation to be soluble is used as a base resin for a positive resist.
- the resin having a containing group is used as a base resin for a negative resist.
- R 3 is an organic group other than an acid labile group or a neutral hydroxyl group-containing group or a hydrogen atom
- the base resin is introduced into the base resin in the form of a repeating unit to increase the solubility when not exposed to light. Or, it can be used for the purpose of adjusting the solubility of the resist composition by mixing with the base resin.
- the chemically amplified resist composition generally contains a photoacid generator and a solvent in addition to the base resin.
- a basic compound, a dissolution inhibitor, a crosslinking agent, etc. Used with added additives.
- ⁇ Additive resin> As the resin added to the resist composition, a polymer obtained by polymerizing one or more monomers selected from the monomers described in the repeating unit (b) can be used.
- ⁇ Crosslinking agent> In the case of a negative resist composition, it can be arbitrarily selected from known crosslinking agents used in chemically amplified negative resist compositions.
- amino group-containing compounds such as melamine, acetoguanamine, benzoguanamine, urea, ethylene urea, propylene urea, glycoluril are reacted with formaldehyde or formaldehyde and a lower alcohol, and the hydrogen atom of the amino group is converted into a hydroxymethyl group or Examples include compounds substituted with a lower alkoxymethyl group.
- melamine are melamine-based crosslinking agents
- those using urea are urea-based crosslinking agents
- those using alkylene ureas such as ethylene urea and propylene urea are alkylene urea-based crosslinking agents
- glycoluril is used. This was called a glycoluril-based crosslinking agent.
- the component (C) is preferably at least one selected from the group consisting of melamine-based crosslinking agents, urea-based crosslinking agents, alkylene urea-based crosslinking agents, and glycoluril-based crosslinking agents, and glycoluril-based crosslinking agents are particularly preferred. preferable.
- melamine-based crosslinking agent examples include hexamethoxymethyl melamine, hexaethoxymethyl melamine, hexapropoxymethyl melamine, hexabutoxybutyl melamine and the like, and among them, hexamethoxymethyl melamine is preferable.
- urea-based crosslinking agent examples include bismethoxymethylurea, bisethoxymethylurea, bispropoxymethylurea, bisbutoxymethylurea, etc. Among them, bismethoxymethylurea is preferable.
- alkylene urea crosslinking agent examples include mono and / or dihydroxymethylated ethylene urea, mono and / or dimethoxymethylated ethylene urea, mono and / or diethoxymethylated ethylene urea, mono and / or dipropoxymethylated ethylene Ethylene urea crosslinking agents such as urea, mono and / or dibutoxymethylated ethylene urea; mono and / or dihydroxymethylated propylene urea, mono and / or dimethoxymethylated propylene urea, mono and / or diethoxymethylated propylene urea Propylene urea-based crosslinking agents such as mono- and / or dipropoxymethylated propylene urea, mono and / or dibutoxymethylated propylene urea; 1,3-di (methoxymethyl) 4,5-dihydroxy-2-imidazolidinone 1,3-di (methoxymethyl) ) -4,5-like and dimethoxy-2
- glycoluril-based crosslinking agent examples include mono, di, tri and / or tetrahydroxymethylated glycoluril, mono, di, tri and / or tetramethoxymethylated glycoluril, mono, di, tri and / or tetraethoxymethyl.
- Glycoluril mono, di, tri and / or tetrapropoxymethylated glycoluril, mono, di, tri and / or tetrabutoxymethylated glycoluril.
- the crosslinking agent component one kind may be used alone, or two or more kinds may be used in combination.
- the content of the entire crosslinking agent component in the negative resist composition of the present invention is preferably 3 to 30 parts by mass, more preferably 3 to 25 parts by mass, and most preferably 5 to 20 parts by mass with respect to 100 parts by mass of the base resin. preferable.
- the content of the crosslinking agent component is at least the lower limit value, the crosslinking formation proceeds sufficiently and a good resist pattern can be obtained.
- it is below this upper limit the storage stability of the resist coating solution is good, and the deterioration of sensitivity with time is suppressed.
- ⁇ Basic compound> it is preferable to add a basic compound as an optional component to the resist composition of the present invention as a quencher, or in order to improve the resist pattern shape, retention time stability, and the like.
- This basic compound component is a known one, for example, primary, secondary or tertiary aliphatic amines, aromatic amines, heterocyclic amines, nitrogen-containing compounds having a hydroxyphenyl group, alcoholic nitrogen-containing compounds.
- Amide derivatives and the like can be used, among which secondary aliphatic amines, secondary aliphatic amines, aromatic amines, and heterocyclic amines are preferable.
- Examples of the aliphatic amine include alkyl amines or alkyl alcohol amines in which at least one hydrogen atom of ammonia NH 3 is substituted with an alkyl group having 12 or less carbon atoms or a hydroxyalkyl group.
- monoalkylamines such as n-hexylamine, n-heptylamine, n-octylamine, n-nonylamine, n-decylamine; diethylamine, di-n-propylamine, di-n-heptylamine, Dialkylamines such as di-n-octylamine and dicyclohexylamine; trimethylamine, triethylamine, tri-n-propylamine, tri-n-butylamine, tri-n-hexylamine, tri-n-pentylamine, tri-n-heptyl Trialkylamines such as amine, tri-n-octylamine, tri-n-nonylamine, tri-n-decanylamine, tri-n-dodecylamine; diethanolamine, triethanolamine, diisopropanolamine, triisopropanolamine, di-n -Ok Nor
- aromatic amines and heterocyclic amines include aniline, N-methylaniline, N-ethylaniline, N-propylaniline, N, N-dimethylaniline, 2-methylaniline, 3-methylaniline, 4-methyl.
- an organic carboxylic acid is further added as an optional component for the purpose of preventing sensitivity deterioration due to the blending of the basic compound component and improving the resist pattern shape, stability with time, etc.
- an oxo acid of phosphorus or a derivative thereof can be contained.
- these can also be used together with a basic compound component, and any one can also be used.
- the organic carboxylic acid for example, malonic acid, citric acid, malic acid, succinic acid, benzoic acid, salicylic acid and the like are suitable.
- Phosphorus oxoacids or derivatives thereof include phosphoric acid, phosphoric acid di-n-butyl ester, phosphoric acid diphenyl ester and other phosphoric acid or derivatives thereof such as phosphonic acid, phosphonic acid dimethyl ester, phosphonic acid- Like phosphonic acids such as di-n-butyl ester, phenylphosphonic acid, phosphonic acid diphenyl ester, phosphonic acid dibenzyl ester and their esters, phosphinic acids such as phosphinic acid, phenylphosphinic acid and their esters Among these, phosphonic acid is particularly preferable.
- a method of forming the fluorine-containing polymer compound according to the present invention into a thin film for example, a method of forming a film by dissolving in an organic solvent and applying and drying can be used.
- the organic solvent to be used is not particularly limited as long as the fluorine-containing polymer compound is soluble, but ketones such as acetone, methyl ethyl ketone, cyclohexanone, methyl isoamyl ketone, 2-heptanone, ethylene glycol, ethylene glycol monoacetate, diethylene glycol , Polyethylene glycol monoacetate, propylene glycol, propylene glycol monoacetate, propylene glycol monomethyl ether, dipropylene glycol, or dipropylene glycol monoacetate monomethyl ether, monoethyl ether, monopropyl ether, monobutyl ether or monophenyl ether Alcohols and their derivatives, cyclic ethers such as dioxane,
- the resist composition of the present invention is a surfactant, preferably a fluorine-based and / or silicon-based surfactant (a fluorine-containing surfactant and a silicon-based surfactant, a surfactant containing both fluorine atoms and silicon atoms). It is preferable to contain any one of 2) or 2 types or more.
- the resist composition of the present invention contains the surfactant, it is particularly effective when using an exposure light source of 250 nm or less, particularly 220 nm or less, and when the pattern line width is narrower, and has good sensitivity and resolution. Thus, it is possible to provide a resist pattern with less adhesion and development defects.
- a known photoacid generator can be used in the resist composition of the present invention.
- the photoacid generator an arbitrary one can be selected from those used as the acid generator of the chemically amplified resist.
- acid generators include bissulfonyldiazomethanes, nitrobenzyl derivatives, onium salts, halogen-containing triazine compounds, cyano group-containing oxime sulfonate compounds, and other oxime sulfonate compounds.
- These photoacid generators may be used alone or in combination of two or more, and the content thereof is usually 0.5 to 20 parts by mass with respect to 100 parts by mass of the resist composition. Is selected within the range. When this amount is less than 0.5 parts by mass, the image forming property is insufficient, and when it exceeds 20 parts by mass, a uniform solution is hardly formed, and the storage stability tends to decrease, which is not preferable.
- the additional resin is not particularly limited as long as it is a resin that dissolves in the solvent used and is compatible with the components constituting the other resist composition, and is not limited to a plasticizer, a stabilizer, a thickener, a leveling agent, an antifoaming agent, a phase. Acts as a solubilizer, adhesive, etc.
- a conventional resist pattern forming method of a photoresist technique can be used as a method of using the resist composition of the present invention. That is, a resist composition solution is first applied to a substrate such as a silicon wafer using a spinner and dried to form a photosensitive layer, which is then exposed to a high energy beam or electron beam of 300 nm or less by an exposure apparatus or the like. Is irradiated through a desired mask pattern and heated. Next, this is developed with a developer, for example, an alkaline aqueous solution such as an aqueous solution of 0.1 to 10% by mass of tetramethylammonium hydroxide. With this forming method, a pattern faithful to the mask pattern can be obtained.
- a developer for example, an alkaline aqueous solution such as an aqueous solution of 0.1 to 10% by mass of tetramethylammonium hydroxide.
- additives that are miscible with the resist composition as desired such as additional resins, quenchers, plasticizers, stabilizers, colorants, surfactants, thickeners, leveling agents, antifoaming agents, compatibilizing agents.
- additives such as an adhesive and an antioxidant can be contained.
- High energy radiation used in the present invention is not particularly limited, especially microfabrication F 2 excimer laser in the case of performing, ArF excimer laser, near ultraviolet (wavelengths 380 ⁇ 200 nm), such as KrF excimer laser or vacuum ultraviolet (far ultraviolet, VUV, wavelength 200 to 10 nm), synchrotron radiation, DPP (Discharge Produced Plasma), extreme ultraviolet (EUV, wavelength 10 nm or less) such as LPP (laser Produced Plasma), soft X-ray, X-ray or ⁇ -ray Things and electron beams are effective.
- the 13.5 nm soft x-rays used in photolithography may be included in EUV by convention in the art.
- the pattern forming method of the present invention it is effective to use an exposure apparatus provided with such a high-energy ray or electron beam source having a short wavelength of 300 nm or less.
- an exposure apparatus provided with such a high-energy ray or electron beam source having a short wavelength of 300 nm or less.
- a medium that absorbs high energy rays such as water or a fluorine-based solvent, in part of the optical path, and an immersion exposure system that enables more efficient microfabrication at the numerical aperture and effective wavelength
- This resist composition is also suitable for use in such an apparatus.
- the aqueous layer was extracted three times with 1000 mL of a diisopropyl ether / ethyl acetate mixed solution, and then the organic layers were combined, concentrated under reduced pressure, and 683 g of 2,2-difluoro-3-hydroxy-pentanoic acid (yield 98%, purity). 95%) Got.
- Example 7 Synthesis of fluorine-containing polymer compound (2) Methacrylic acid 1-aminocarbonyl-1,1-difluoro-2-butyl ester, methacrylic acid prepared by the synthesis method described in JP-A-2004-175740 Fluorinated polymer compound in the same manner as in Example 6 using-(2-trifluoromethyl-2-hydroxyl-3,3,3-trifluoropropyl) -norbornanyl (MA-BTHB-NB), MA-HMA (2) was synthesized. The results are shown in Table 1.
- Example 9 Synthesis of fluorine-containing polymer compound (4) Methacrylic acid 1-aminocarbonyl-1,1-difluoro-2-butyl ester, MA-HMA, MA-lactone ( ⁇ -butyrolactone methacrylate: Osaka Organic Industrial Co., Ltd.)
- the fluorine-containing polymer compound (4) was synthesized in the same manner as in Example 6 using the same method. The results are shown in Table 1.
- Example 10 Synthesis of fluorine-containing polymer compound (5) Methacrylic acid 1-aminocarbonyl-1,1-difluoro-2-butyl ester, MA-HMA, 5-methacryloyloxy-2,6-norbornanecarbolactone (MA-NBL (manufactured by Daicel Chemical Industries, Ltd.)) and MA-BTHB-NB were used in the same manner as in Example 6 to synthesize the fluorine-containing polymer compound (5). The results are shown in Table 1.
- Example 11 Synthesis of fluorine-containing polymer compound (6) Methacrylic acid 1-aminocarbonyl-1,1-difluoro-2-butyl ester, 2-methyl-2-adamantyl methacrylate (MA-MAD), MA- A fluorine-containing polymer compound (6) was synthesized in the same manner as Example 6 using NBL. The results are shown in Table 1.
- Example 12 Synthesis of fluorinated polymer compound (7)
- Example 6 using methacrylic acid 1-aminocarbonyl-1,1-difluoro-2-butyl ester, MA-HMA, MA-MAD, MA-NBL
- a fluorine-containing polymer compound (7) was synthesized. The results are shown in Table 1.
- Example 13 Synthesis of fluorine-containing polymer compound (8) Same as Example 6 using 1-aminocarbonyl-1,1-difluoro-2-butyl ester methacrylate, tert-butyl methacrylate, MA-HMA Thus, a fluorine-containing polymer compound (8) was synthesized. The results are shown in Table 1.
- Example 14 Synthesis of Fluorine-Containing Polymer Compound (9) Using Example 1 using methacrylic acid 1-tert-butylaminocarbonyl-1,1-difluoro-2-butyl ester, MA-HMA, and MA-lactone Similarly, a fluorine-containing polymer compound (9) was synthesized. The results are shown in Table 1.
- Example 15 Synthesis of fluorine-containing polymer compound (10) Methacrylic acid 1-tert-Butylaminocarbonyl-1,1-difluoro-2-butyl ester, Methacrylic acid 3,5-bis (hexafluoro-2-hydroxy
- the fluorine-containing polymer compound (10) was synthesized in the same manner as in Example 6 using -2-propyl) cyclohexyl ester (MA-3,5-HFA-CHOH) and MA-lactone. The results are shown in Table 1.
- Example 17 Synthesis of fluorine-containing polymer compound (12) Example 6 using methacrylic acid 3-hydroxypropaneaminocarbonyl-1,1-difluoro-2-butyl ester, MA-HMA, methacrylic acid (MA) In the same manner, a fluorine-containing polymer compound (12) was synthesized. The results are shown in Table 1.
- Example 18 Synthesis of fluorine-containing polymer compound (13) Methacrylic acid 3-hydroxypropaneaminocarbonyl-1,1-difluoro-2-butyl ester, MA-HMA, methacrylic acid- (2-trifluoromethyl-2)
- a fluorine-containing polymer compound (13) was synthesized in the same manner as in Example 6 using -hydroxyl-3,3,3-trifluoropropyl) -norbornanyl (A-BTHB-NB) and MA-NBL. The results are shown in Table 1.
- the fluorine-containing compound (1) was dissolved in propylene glycol monomethyl ether acetate (PGMEA) to prepare a solid content of 14%. Further, 5 parts by weight of Midori Chemical's triphenylsulfonium triflate (TPS105) as a photoacid generator and 100 parts by weight of the polymer compound (1) as a cross-linking agent, Nicarac MX-270 (glycoluril-based cross-linking agent, three Japanese Chemical Products) 10 parts by weight and 0.15 parts by weight of trioctylamine as a basic compound were dissolved to prepare a resist composition (R-1).
- PPGMEA propylene glycol monomethyl ether acetate
- the fluorine-containing polymer compounds (2) to (5), (18) and (19), the polymer compounds (2) and (3), and the photoacid generator and crosslinking agent shown in Table 2 are used.
- Basic compositions and solvents using resist compositions (FR-2), (FR-3), (FR-4), (FR-5), (FR-13), (FR-14), ( R-2) and (R-3) were prepared. Since the high molecular compound (1) had a negative chemical structure and was insoluble before exposure, it was not subjected to pattern formation.
- the resist composition was filtered through a membrane filter having a pore size of 0.2 ⁇ m, and each resist composition was spin-coated on a silicon wafer to obtain a coating film (resist film) having a thickness of 300 nm.
- a coating film resist film
- the fluorine-containing polymer compound (6) was dissolved in propylene glycol methyl acetate to prepare a solid content of 14%. To this, 100 parts by weight of the fluorine-containing polymer compound (6), 5 parts by weight of triphenylsulfonium triflate (TPS105) manufactured by Midori Chemical as a photoacid generator, and 0.15 weight of trioctylamine as a basic compound A resist composition (FR-6) was prepared by dissolving the resin so as to form parts. In the same manner, each of the resist compositions using the fluorine-containing polymer compounds (7) to (11), the polymer compounds (4) and (5) and the photoacid generator, basic substance and solvent shown in Table 2 were used. (FR-7), (FR-8), (FR-9), (FR-10), (FR-11), (R-4), (R-5) were prepared.
- resist film a coating film having a thickness of 250 nm.
- exposure was performed with ultraviolet rays of 193 nm through a photomask with a one-to-one line-and-space (130 nm 1 L / 1S pattern) having a size of 130 nm, followed by post-exposure baking at 120 ° C. .
- development was performed at 22 ° C. for 1 minute using a 2.38 wt% tetramethylammonium hydroxide aqueous solution.
- Resist compositions (FR-6), (FR-7), (FR-8), (FR-9), (FR-10), and (FR-11) are high resolution from any resist composition.
- the pattern shape was obtained, and defects due to poor adhesion to the substrate, defective film formation, development defects, and poor etching resistance were not observed.
- the pattern shape of the 130 nm 1L / 1S pattern resolved at the optimum exposure dose was observed with a scanning electron microscope.
- the evaluation of the pattern shape at that time was displayed as “rectangle” or “distorted rectangle” in a rectangular state.
- the resist compositions (R-4) and (R-5) were not dissolved as a whole, and no clear pattern was observed. The results are shown in Table 2.
- Resists (RF-1), (RF-2), (RF-3), (RF-4) containing the fluorine-containing polymer compounds (1) to (5) and (12) to (14) of the present invention Resist (R-1), (R-2) containing (RF-5), (RF-12), (RF-13), (RF-14), polymer compound (2), (3) of comparative example ) was unexposed and dissolved in an alkaline developer (indicated as “soluble” in Table 2).
- resists (RF-6), (RF-7), (RF-8), (RF-9), (RF-10) containing the fluorine-containing polymer compounds (6) to (11) of the present invention Resists (R-1), (R-4), and (R-5) containing (RF-11) and the polymer compounds (1), (4), and (5) of Comparative Examples are unexposed alkaline developer (Indicated as “insoluble” in Table 2).
- resists (RF-6), (RF-7), (RF-8), (RF-9), (RF-10) containing the fluorine-containing polymer compounds (6) to (11) of the present invention The resist (R-2) containing (RF-11) and the comparative polymer compound (2) was insoluble in an alkali developer after exposure (indicated as “soluble” in Table 2).
- the fluorine-containing polymer compound of the present invention is useful as a component of a resist composition.
Landscapes
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Spectroscopy & Molecular Physics (AREA)
- General Physics & Mathematics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Materials For Photolithography (AREA)
- Exposure And Positioning Against Photoresist Photosensitive Materials (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Abstract
Description
[1]下記一般式(1)で表わされる含フッ素不飽和カルボン酸アミド。
R3は、水素原子、炭素数1~20の置換基を有することもある直鎖状、分岐状もしくは環状のアルキル基、炭素数3~20の置換基を有することもあるアリール基であって、各炭素原子はカルボニル基、酸素原子、イオウ原子または珪素原子で置換されていてもよく、各水素原子はハロゲン原子で置換されていてもよく、
W1は、単結合、非置換または置換メチレン基、二価の脂環式炭化水素基、二価の芳香族炭化水素基、エーテル基、カルボニル基、エステル基、オキソカルボニル基、チオエーテル基、アミド基、スルフォンアミド基、ウレタン基、ウレア基、二価の脂環式炭化水素基および二価の芳香族炭化水素基よりなる群から選択される1または2以上の有機基の組み合わせからなる二価の連結基を表し、連結基は同一の有機基を複数有することができ炭素原子に結合する任意の数の水素原子はフッ素原子で置換していてもよく、連結基内で各炭素原子は置換基を含めて環を形成してもよい。)
一般式(1)で表される含フッ素不飽和カルボン酸アミド
-CR4R5- (3)
ここで、置換メチレン基のR4、R5 で表される一価の基は、特に限定されないが、水素原子、ハロゲン原子もしくはヒドロキシル基または置換もしくは非置換のアルキル基、置換もしくは非置換の脂環式炭化水素基、アルコキシル基、置換もしくは非置換のアリール基および置換もしくは非置換の縮合多環式芳香族基から選ばれた炭素数1~30の一価の基であって、これらの一価の基はフッ素原子、酸素原子、硫黄原子、窒素原子、炭素―炭素二重結合を有することができる。R4、R5 は同一でも異なっていてもよい。また、R4、R5 は、分子内の原子とともに組み合わされて環を形成してもよく、この環は脂環式炭化水素構造であることが好ましい。R4、R5 で表される一価の有機基として次のものが挙げられる。
前記一般式(d)において、R6は炭素数1~4の置換基を有していても良いアルキル基、炭素数3~30の置換基を有していても良い脂環式炭化水素基または炭素数6~14の置換基を有していてもよいアリール基を表す。
前記一般式(e)のアルコキシアルキル基において、R6は前記一般式(d)におけるR6と同義である。R7は水素原子、炭素数1~4の置換基を有していても良いアルキル基、炭素数3~30の置換基を有していても良い脂環式炭化水素基、炭素数1~6の置換基を有していても良いアルコキシル基、炭素数2~4個の置換基を有していても良いアルケニル基、炭素数6~14の置換基を有していても良いアリール基もしくは炭素数7~20個の置換基を有していても良いアラルキル基を表す。
前記一般式(f)において、R8、R19およびR10は、それぞれ同一でも異なっていてもよく、炭素数1~4の置換基を有していても良いアルキル基、炭素数3~30の置換基を有していても良い脂環式炭化水素基、炭素数2~4個の置換基を有していても良いアルケニル基、炭素数6~14の置換基を有していても良いアリール基もしくは炭素数7~20個の置換基を有していても良いアラルキル基を表す。また、R8~R10の内の2つの基が結合して環を形成してもよい。
前記一般式(g)において、R8、R9およびR10は、一般式(f)におけるR8、R9およびR10と同義である。
前記一般式(h)において、R6は前記一般式(d)におけるR6と同義である。
前記の一般式(d)R6-O-C(=O)-で表されるアルコキシカルボニル基としては、tert-ブトキシカルボニル基、tert-アミルオキシカルボニル基、メトキシカルボニル基、エトキシカルボニル基、i-プロポキシカルボニル基、シクロヘキシルオキシカルボニル基、イソボルニルオキシカルボニル基、アダマンタンオキシカルボニル基等を例示できる。
-W2-(OH)p (4)
式中、W2は脂環式炭化水素基もしくは脂肪族炭化水素基またはこれらを組み合わせたp+1価の有機基を表し、pは1~3の整数を表す。
本発明の一般式(1)で示される含フッ素不飽和カルボン酸アミド類の製造方法は限定されない。例えば次の反応式[1]~[4]によって含フッ素不飽和カルボン酸ハライドを製造できる。
一般式(2)で表される繰り返し単位(a)
含フッ素高分子化合物は、繰り返し単位(a)以外に、ドライエッチング耐性や標準現像液適性、基板密着性、レジストプロファイル、さらにレジストの一般的な必要な特性である解像力、耐熱性、感度等を調節する目的で様々な繰り返し単位として繰り返し単位(b)を含有することができる。
本発明にかかる含フッ素高分子化合物の重合方法としては、一般的に使用される方法であれば特に制限されないが、ラジカル重合、イオン重合などが好ましく、場合により、配位アニオン重合、リビングアニオン重合、カチオン重合、開環メタセシス重合、ビニレン重合、ビニルアディションなどを使用することも可能である。
また、含フッ素高分子化合物にフッ素原子を多く持つものは塗布膜の透明性の向上に役立ち、環状構造を含むものはエッチング耐性や高ガラス転移点などの特徴をさらに付与させることができるためで、本発明の応用分野ごとに使い分けることが可能である。
レジスト組成物への添加樹脂としては、前記繰り返し単位(b)で説明した単量体から選ばれた1種または2種以上の単量体を重合してなる重合体が使用できる。
ネガ型レジスト組成物の場合、化学増幅型のネガ型レジスト組成物に用いられている架橋剤として公知のものの中から任意に選択して用いることができる。
また、本発明のレジスト組成物には、クエンチャーとして、またはレジストパターン形状、引き置き経時安定性などを向上させるために、さらに任意の成分として、塩基性化合物を配合させることが好ましい。
これらは単独で用いてもよいし、2種以上を組み合わせて用いてもよい。
塩基性化合物成分は、ベース樹脂100質量部に対して、通常0.01~5質量部の範囲で用いられる。
有機カルボン酸としては、例えば、マロン酸、クエン酸、リンゴ酸、コハク酸、安息香酸、サリチル酸などが好適である。
本発明による含フッ素高分子化合物を薄膜に成膜する方法としては、例えば有機溶媒に溶解させて塗布、乾燥によって成膜する方法を用いることが可能である。使用する有機溶媒としては、含フッ素高分子化合物が可溶であれば特に制限されないが、アセトン、メチルエチルケトン、シクロヘキサノン、メチルイソアミルケトン、2‐ヘプタノンなどのケトン類やエチレングリコール、エチレングリコールモノアセテート、ジエチレングリコール、ジエチレングリコールモノアセテート、プロピレングリコール、プロピレングリコールモノアセテート、プロピレングリコールモノメチルエーテル、ジプロピレングリコール、又はジプロピレングリコールモノアセテートのモノメチルエーテル、モノエチルエーテル、モノプロピルエーテル、モノブチルエーテル又はモノフェニルエーテルなどの多価アルコール類及びその誘導体や、ジオキサンのような環式エーテル類や乳酸メチル、乳酸エチル、酢酸メチル、酢酸エチル、酢酸ブチル、ピルビン酸メチル、ピルビン酸エチル、メトキシプロピオン酸メチル、エトキシプロピオン酸エチルなどのエステル類、キシレン、トルエンなどの芳香族系溶媒、フロン、代替フロン、パーフルオロ化合物、ヘキサフルオロイソプロピルアルコールなどのフッ素系溶剤、塗布性を高める目的で高沸点弱溶剤であるターペン系の石油ナフサ溶媒やパラフィン系溶媒などが使用可能である。これらは単独で用いてもよいし、2種以上混合して用いてもよい。
本発明のレジスト組成物は、界面活性剤、好ましくはフッ素系及び/又はシリコン系界面活性剤(フッ素系界面活性剤及びシリコン系界面活性剤、フッ素原子と珪素原子の両方を含有する界面活性剤)のいずれか、あるいは2種以上を含有することが好ましい。
本発明のレジスト組成物には、公知の光酸発生剤を使用することができる。光酸発生剤としては、化学増幅型レジストの酸発生剤として用いられるものの中から、任意のものを選択して使用することができる。このような酸発生剤の例としては、ビススルホニルジアゾメタン類、ニトロベンジル誘導体類、オニウム塩類、ハロゲン含有トリアジン化合物類、シアノ基含有オキシムスルホネート化合物類、その他のオキシムスルホネート化合物などが挙げられる。これらの光酸発生剤は単独で用いてもよいし、2種以上を組み合わせて用いてもよく、また、その含有量はレジスト組成物100質量部に対して、通常0.5~20質量部の範囲で選ばれる。この量が0.5質量部未満では像形成性が不十分であるし、20質量部を超えると均一な溶液が形成されにくく、保存安定性が低下する傾向がみられ好ましくない。
本発明のレジスト組成物の使用方法は、従来のフォトレジスト技術のレジストパターン形成方法を用いることができる。すなわち、まずシリコンウエーハのような基板に、レジスト組成物の溶液をスピンナーなどを用いて塗布し、乾燥することによって感光層を形成させ、これに露光装置などにより300nm以下の高エネルギー線又は電子線を所望のマスクパターンを介して照射し、加熱する。次いでこれを現像液、例えば0.1~10質量%テトラメチルアンモニウムヒドロキシド水溶液のようなアルカリ性水溶液などを用いて現像処理する。この形成方法でマスクパターンに忠実なパターンを得ることができる。さらに、所望によってレジスト組成物に混和性のある添加物、例えば付加的樹脂、クエンチャー、可塑剤、安定剤、着色剤、界面活性剤、増粘剤、レベリング剤、消泡剤、相溶化剤、密着剤、酸化防止剤などの種々添加剤を含有させることができる。
1H NMR(測定溶媒:重クロロホルム,基準物質:テトラメチルシラン);δ=4.33(t,J=7.6 Hz,3H;O-CH2CH3のCH2),3.89(m,1H;CH-OHのCH),2.06(d,J=7.2 Hz,1H;CH-OHのOH),1.74(m,1H;C-CH2CH3のCH2), 1.54(m,1H;C-CH2CH3のCH2),1.32(t,J=7.6 Hz,3H;C-CH2CH3のCH3),1.02(t,J=7.6 Hz,3H;O-CH2CH3のCH3).
19F NMR(測定溶媒:重クロロホルム,基準物質:トリクロロフルオロメタン);δ=-115.33(d,J=265 Hz,1F),-122.88(d,J=265 Hz,1F)。
を得た。
1H NMR(測定溶媒:重ジメチルスルホキシド,基準物質:テトラメチルシラン);δ=3.72(m,1H;CH-OHのCH), 1.52(m,1H;CH-CH2CH3のCH2),1.39(m,1H;CH-CH2CH3のCH2),0.92(t,J=7.6 Hz,3H;CH-CH2CH3のCH3).
19F NMR(測定溶媒:重ジメチルスルホキシド,基準物質:トリクロロフルオロメタン);δ=-113.90(d,J=250 Hz,1F),-121.01(d,J=250 Hz,1F)。
1H NMR(測定溶媒:重クロロホルム,基準物質:テトラメチルシラン);δ=6.10(s,1H;=CH2),5.55(s,1H;=CH2),5.39(m,1H;CH-OH), 1.85(s,3H;CH3-C),1.73(m,2H;CH-CH2CH3のCH2),0.87(t,J=7.6 Hz,3H;CH-CH2CH3のCH3).
19F NMR(測定溶媒:重クロロホルム,基準物質:トリクロロフルオロメタン);δ=-114.54(d,J=279 Hz,1F),-119.40(d,J=279 Hz,1F)。
1H NMR(測定溶媒:重クロロホルム,基準物質:テトラメチルシラン);δ=6.14(s,1H;=CH2),5.63(s,1H;=CH2),5.43(m,1H;CH-O), 1.92(s,3H;CH3-C),1.82(m,2H;CH-CH2CH3のCH2),0.96(t、J=7.6 Hz,3H;CH-CH2CH3のCH3).
19F NMR(測定溶媒:重クロロホルム,基準物質:トリクロロフルオロメタン);δ=-108.10(d,J=259Hz,1F),-114.01(d,J=259Hz,1F)。
1H NMR(測定溶媒:重クロロホルム,基準物質:テトラメチルシラン);δ=6.40(br,1H;NH2),6.34(br,1H;NH2),6.14(s,1H;=CH2),5.61(s,1H;=CH2),5.42(m,1H;CH-O),1.93(s,3H;CH3-C),1.83(m,2H;CH-CH2CH3のCH2),0.94(t、J=7.6 Hz,3H;CH-CH2CH3のCH3).
19F NMR(測定溶媒:重クロロホルム,基準物質:トリクロロフルオロメタン);δ=-114.98(d,J=259Hz,1F),-118.38(d,J=259Hz,1F)。
1H NMR(測定溶媒:重クロロホルム,基準物質:テトラメチルシラン);δ=6.09(s,1H;=CH2),5.57(s,1H;=CH2),5.38(m,1H;CH-O),3.63(t、J=6.0 Hz,2H;CH2-OHのCH2),3.44(q、J=6.0 Hz,2H;NH-CH2のCH2),1.88(s,3H;CH3-C),1.72(m,2H;CH-CH2CH3のCH2),1.69(m,2H;CH2-CH2-CH2の中央CH2),0.90(t、J=7.6 Hz,3H;CH-CH2CH3のCH3).
19F NMR(測定溶媒:重クロロホルム,基準物質:トリクロロフルオロメタン);δ=-115.45(d,J=259Hz,1F),-118.98(d,J=259Hz,1F)。
1H NMR(測定溶媒:重クロロホルム,基準物質:テトラメチルシラン);δ=6.07(br,2H;NH2),6.07(s,1H;=CH2),5.55(s,1H;=CH2),5.35(m,1H;CH-O),1.87(s,3H;CH3-C),1.72(m,2H;CH-CH2CH3のCH2),1.29(s,9H;tBu),0.87(t、J=7.6 Hz,3H;CH-CH2CH3のCH3).
19F NMR(測定溶媒:重クロロホルム,基準物質:トリクロロフルオロメタン);δ=-114.79(d,J=256Hz,1F),-118.97(d,J=256Hz,1F)。
コンデンサーを備えたガラスのフラスコに、メタクリル酸 1-アミノカルボニル-1,1-ジフルオロ-2-ブチルエステル1.8g、メタクリル酸3-ヒドロキシ-1-アダマンチル(MA-HMA(ダイセル化学工業株式会社製))4.5g、アゾビスブチロニトリル0.1g、メチルエチルケトン15mlを加え、フラスコ内を窒素雰囲気とした。この溶液を60℃に昇温し、18時間撹拌した。反応終了後、n-ヘキサン60mlに投入して撹拌し、生成した沈殿を取り出した。これを55℃で20時間乾燥することで白色固体として、含フッ素高分子化合物(1)4.6g(収率70%)を得た。繰り返し単位の組成比は、NMRにおいて決定し、分子量はゲルパミュエーションクロマトグラフィ(GPC、標準物質:ポリスチレン)により算出した。結果を表1に示した。
メタクリル酸 1-アミノカルボニル-1,1-ジフルオロ-2-ブチルエステル、特開2004-175740にて記載された合成方法により調製したメタクリル酸-(2-トリフルオロメチル-2-ヒドロキシル-3,3,3-トリフルオロプロピル)-ノルボルナニル(MA-BTHB-NB)、MA-HMAを用いて実施例6と同様にして含フッ素高分子化合物(2)を合成した。結果を表1に示した。
メタクリル酸 1-アミノカルボニル-1,1-ジフルオロ-2-ブチルエステル、MA-HMA、メタクリル酸-2-ヒドロキシエチル(HEMA(東京化成工業株式会社製))を用いて実施例6と同様にして含フッ素高分子化合物(3)を合成した。結果を表1に示した。
メタクリル酸 1-アミノカルボニル-1,1-ジフルオロ-2-ブチルエステル、MA-HMA、MA-lactone(γ-ブチロラクトンメタクリレート:大阪有機工業株式会社製)を用いて実施例6と同様にして含フッ素高分子化合物(4)を合成した。結果を表1に示した。
メタクリル酸 1-アミノカルボニル-1,1-ジフルオロ-2-ブチルエステル、MA-HMA、5-メタクリロリロキシ-2,6-ノルボルナンカルボラクトン(MA-NBL(ダイセル化学工業株式会社製))、MA-BTHB-NBを用いて実施例6と同様にして含フッ素高分子化合物(5)を合成した。結果を表1に示した。
メタクリル酸 1-アミノカルボニル-1,1-ジフルオロ-2-ブチルエステル、メタクリル酸2-メチル-2-アダマンチル(MA-MAD)、MA-NBLを用いて実施例6と同様にして含フッ素高分子化合物(6)を合成した。結果を表1に示した。
メタクリル酸 1-アミノカルボニル-1,1-ジフルオロ-2-ブチルエステル、MA-HMA、MA-MAD、MA-NBLを用いて実施例6と同様にして含フッ素高分子化合物(7)を合成した。結果を表1に示した。
メタクリル酸 1-アミノカルボニル-1,1-ジフルオロ-2-ブチルエステル、メタクリル酸tert-ブチル、MA-HMAを用いて実施例6と同様にして含フッ素高分子化合物(8)を合成した。結果を表1に示した。
メタクリル酸 1-tert-ブチルアミノカルボニル-1,1-ジフルオロ-2-ブチルエステル、MA-HMA、MA-lactoneを用いて実施例6と同様にして含フッ素高分子化合物(9)を合成した。結果を表1に示した。
メタクリル酸 1-tert-ブチルアミノカルボニル-1,1-ジフルオロ-2-ブチルエステル、メタクリル酸3,5-ビス(ヘキサフルオロ-2-ヒドロキシ-2-プロピル)シクロヘキシルエステル(MA-3,5-HFA-CHOH)、MA-lactoneを用いて実施例6と同様にして含フッ素高分子化合物(10)を合成した。結果を表1に示した。
メタクリル酸 1-tert-ブチルアミノカルボニル-1,1-ジフルオロ-2-ブチルエステル、メタクリル酸 1-アミノカルボニル-1,1-ジフルオロ-2-ブチルエステル、MA-HMA、MA-lactoneを用いて実施例6と同様にして含フッ素高分子化合物(11)を合成した。結果を表1に示した。
メタクリル酸 3-ヒドロキシプロパンアミノカルボニル-1,1-ジフルオロ-2-ブチルエステル、MA-HMA、メタクリル酸(MA)を用いて実施例6と同様にして含フッ素高分子化合物(12)を合成した。結果を表1に示した。
メタクリル酸 3-ヒドロキシプロパンアミノカルボニル-1,1-ジフルオロ-2-ブチルエステル、MA-HMA、メタクリル酸-(2-トリフルオロメチル-2-ヒドロキシル-3,3,3-トリフルオロプロピル)-ノルボルナニル(A-BTHB-NB)、MA-NBLを用いて実施例6と同様にして含フッ素高分子化合物(13)を合成した。結果を表1に示した。
メタクリル酸 3-ヒドロキシプロパンアミノカルボニル-1,1-ジフルオロ-2-ブチルエステル、メタクリル酸 1-アミノカルボニル-1,1-ジフルオロ-2-ブチルエステル、MA-BTHB-NB、MA-lactoneを用いて実施例6と同様にして含フッ素高分子化合物(14)を合成した。結果を表1に示した。
含フッ素化合物(1)を、プロピレングリコールモノメチルエーテルアセテート(PGMEA)に溶解し、固形分14%になるように調製した。さらに高分子化合物(1)100重量部に対し、光酸発生剤としてみどり化学製トリフェニルスルフォニウムトリフレート(TPS105)を5重量部、架橋剤としてニカラックMX-270(グリコールウリル系架橋剤、三和ケミカル製品)10重量部、塩基性化合物としてトリオクチルアミン0.15重量部を溶解してレジスト組成物(R-1)を調製した。また、これと同様にして含フッ素高分子化合物(2)~(5)、(18)、(19)、高分子化合物(2)、(3)と表2に示す光酸発生剤、架橋剤、塩基性物質、溶剤を用いてそれぞれレジスト組成物(FR-2)、(FR-3)、(FR-4)、(FR-5)、(FR-13)、(FR-14)、(R-2)、(R-3)を調製した。高分子化合物(1)はネガ型の化学構造であって、露光前に不溶であったので、パターン形成には供しなかった。
含フッ素高分子化合物(6)をプロピレングリコールメチルアセテートに溶解し、固形分14%になるように調製した。これに含フッ素高分子化合物(6)100重量部に対し、光酸発生剤としてみどり化学製トリフェニルスルフォニウムトリフレート(TPS105)を5重量部、塩基性化合物としてトリオクチルアミンを0.15重量部になるように溶解してレジスト組成物(FR-6)を調製した。これと同様にして含フッ素高分子化合物(7)~(11)、高分子化合物(4)、(5)と表2に示す光酸発生剤、塩基性物質、溶剤を用いてそれぞれレジスト組成物(FR-7)、(FR-8)、(FR-9)、(FR-10)、(FR-11)、(R-4)、(R-5)を調製した。
前述と同様に、レジストを塗布してレジスト膜を形成したシリコンウェハーを、120℃でプリベークを行い、120℃でポストエクスポーザーベークを行った。その後、アルカリ現像液(2.38重量%水酸化テトラメチルアンモニウム水溶液)に浸漬し溶解性を試験した。また、レジストを塗布してレジスト膜を形成したシリコンウェハーを、120℃でプリベークを行った後、248nmの紫外線で露光を行った後、120℃でポストエクスポーザーベークを行った。その後、アルカリ現像液(2.38重量%水酸化テトラメチルアンモニウム水溶液)に浸漬し溶解性を試験した。レジストの溶解は、浸漬後の膜の残存を光干渉型の膜厚計で測定することによって調べた。結果を表2に示した。
本発明の含フッ素高分子化合物(1)~(5)、(12)~(14)を含むレジスト(RF-1)、(RF-2)、(RF-3)、(RF-4)、(RF-5)、(RF-12)、(RF-13)、(RF-14)、比較例の高分子化合物(2)、(3)を含むレジスト(R-1)、(R-2)は、未露光でアルカリ現像液に溶解した(表2で「溶」と表示する。)。一方、本発明の含フッ素高分子化合物(6)~(11)を含むレジスト(RF-6)、(RF-7)、(RF-8)、(RF-9)、(RF-10)、(RF-11)、比較例の高分子化合物(1)、(4)、(5)を含むレジスト(R-1)、(R-4)、(R-5)は未露光でアルカリ現像液に不溶であった(表2で「不溶」と表示する。)。
本発明の含フッ素高分子化合物(1)~(5)、(12)~(14)を含むレジスト(RF-1)、(RF-2)、(RF-3)、(RF-4)、(RF-5)、(RF-12)、(RF-13)、(RF-14)、比較例の高分子化合物(3)、(4)、(5)を含むレジスト(R-3)、(R-4)、(R-5)は、露光後は現像液に溶解しなかった(表2で「不溶」と表示する。)。一方、本発明の含フッ素高分子化合物(6)~(11)を含むレジスト(RF-6)、(RF-7)、(RF-8)、(RF-9)、(RF-10)、(RF-11)、比較例の高分子化合物(2)を含むレジスト(R-2)は露光後、アルカリ現像液に不溶であった(表2で「溶」と表示する。)。
Claims (19)
- 下記一般式(1)で表わされる含フッ素不飽和カルボン酸アミド。
(式中、R0は、下記式で表される重合性二重結合含有基の何れかを表し、
R2は、フッ素原子または含フッ素アルキル基を表し、
R3は、水素原子、炭素数1~20の置換基を有することもある直鎖状、分岐状もしくは環状のアルキル基、炭素数3~20の置換基を有することもあるアリール基であって、各炭素原子はカルボニル基、酸素原子、イオウ原子または珪素原子で置換されていてもよく、各水素原子はハロゲン原子で置換されていてもよく、
W1は、単結合、非置換または置換メチレン基、二価の脂環式炭化水素基、二価の芳香族炭化水素基、エーテル基、カルボニル基、エステル基、オキソカルボニル基、チオエーテル基、アミド基、スルフォンアミド基、ウレタン基、ウレア基、二価の脂環式炭化水素基および二価の芳香族炭化水素基よりなる群から選択される1または2以上の有機基の組み合わせからなる二価の連結基を表し、連結基は同一の有機基を複数有することができ炭素原子に結合する任意の数の水素原子はフッ素原子で置換していてもよく、連結基内で各炭素原子は置換基を含めて環を形成してもよい。) - R2がフッ素原子である請求項1に記載の含フッ素不飽和カルボン酸アミド。
- R3が水素原子である請求項1または2に記載の含フッ素不飽和カルボン酸アミド。
- R3が酸不安定性基である請求項1または2に記載の含フッ素不飽和カルボン酸アミド。
- R3が中性アルコキシル基含有基である請求項1または2に記載の含フッ素不飽和カルボン酸アミド。
- R2がフッ素原子である請求項6に記載の含フッ素高分子化合物。
- R3が水素原子である請求項6または7に記載の含フッ素高分子化合物。
- R3が酸不安定性基である請求項6または7に記載の含フッ素高分子化合物。
- R3が中性アルコキシル基含有基である請求項6または7に記載の含フッ素高分子化合物。
- 含フッ素高分子化合物が、アクリル酸エステル、含フッ素アクリル酸エステル、メタクリル酸エステル、含フッ素メタクリル酸エステル、スチレン系化合物、含フッ素スチレン系化合物、ビニルエーテル類、含フッ素ビニルエーテル類、アリルエーテル類、含フッ素アリルエーテル類、アクリルアミド類、メタクリルアミド類、ビニルエステル類、アリルエステル類、オレフィン類、含フッ素オレフィン類、ノルボルネン化合物、含フッ素ノルボルネン化合物、二酸化硫黄およびビニルシラン類からなる群から選択される共重合可能な単量体の重合性二重結合が開裂して形成された繰り返し単位(b)をさらに含む請求項6~10のいずれか1項に記載の含フッ素高分子化合物。
- 繰り返し単位(b)がラクトン環を有する繰り返し単位である請求項11に記載の含フッ素高分子化合物。
- 請求項6~12のいずれか1項に記載の含フッ素高分子化合物と溶媒を少なくとも含むレジスト組成物。
- 請求項6~12のいずれか1項に記載の含フッ素高分子化合物と光酸発生剤と溶媒を少なくとも含む化学増幅型レジスト組成物。
- 請求項6~12のいずれか1項に記載の含フッ素高分子化合物と光酸発生剤と溶媒を少なくとも含む化学増幅型ポジ型レジスト組成物。
- 請求項6~12のいずれか1項に記載の含フッ素高分子化合物と光酸発生剤と架橋剤と溶媒を少なくとも含む化学増幅型ネガ型レジスト組成物。
- 請求項13~16のいずれか1項に記載のレジスト組成物を基板上に塗布する工程と、次に基板を熱処理する工程と、300nm以下の波長の高エネルギー線又は電子線を用いてフォトマスクを通して露光する工程と、露光されたレジストの塗布膜に対して熱処理を施す工程と、現像処理を施す工程を少なくとも含むことを特徴とするパターン形成方法。
- 高エネルギー線が近紫外線、真空紫外線(VUV)、極端紫外線(EUV)または軟エックス線であることを特徴とする請求項17記載のパターン形成方法。
- 請求項17または18に記載のパターン形成方法により形成したパターンを有する電子デバイス。
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US13/141,945 US8592540B2 (en) | 2008-12-25 | 2009-12-15 | Fluorine-containing compound, fluorine-containing polymer compound, resist composition and patterning method using same |
| KR1020117017219A KR101287091B1 (ko) | 2008-12-25 | 2009-12-15 | 함불소 불포화 카르본산 아미드, 함불소 고분자 화합물, 레지스트 조성물, 그것을 사용한 패턴 형성 방법 및 이 패턴 형성 방법에 의해 형성한 패턴을 가지는 전자 디바이스 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2008-329453 | 2008-12-25 | ||
| JP2008329453A JP5589281B2 (ja) | 2008-12-25 | 2008-12-25 | 含フッ素化合物、含フッ素高分子化合物、レジスト組成物及びそれを用いたパターン形成方法 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2010073934A1 true WO2010073934A1 (ja) | 2010-07-01 |
Family
ID=42287550
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2009/070865 Ceased WO2010073934A1 (ja) | 2008-12-25 | 2009-12-15 | 含フッ素化合物、含フッ素高分子化合物、レジスト組成物及びそれを用いたパターン形成方法 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US8592540B2 (ja) |
| JP (1) | JP5589281B2 (ja) |
| KR (1) | KR101287091B1 (ja) |
| TW (1) | TWI400224B (ja) |
| WO (1) | WO2010073934A1 (ja) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140038102A1 (en) * | 2012-07-31 | 2014-02-06 | Rohm And Haas Electronic Materials Llc | Photoresist compositions and methods of forming photolithographic patterns |
| CN110325916B (zh) * | 2017-03-30 | 2023-04-11 | Jsr株式会社 | 感放射线性组合物及抗蚀剂图案形成方法 |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5007846B2 (ja) * | 2010-02-26 | 2012-08-22 | 信越化学工業株式会社 | 化学増幅ネガ型レジスト組成物及びパターン形成方法 |
| JP5723685B2 (ja) * | 2010-06-25 | 2015-05-27 | 富士フイルム株式会社 | 感活性光線性又は感放射線性樹脂組成物、並びに、それを用いたレジスト膜及びパターン形成方法 |
| JP5572501B2 (ja) * | 2010-09-24 | 2014-08-13 | 富士フイルム株式会社 | 感活性光線性又は感放射線性樹脂組成物並びに該組成物を用いたレジスト膜及びパターン形成方法 |
| JP5740375B2 (ja) * | 2011-09-30 | 2015-06-24 | 富士フイルム株式会社 | 感活性光線性又は感放射線性樹脂組成物、並びに、それを用いた感活性光線性又は感放射線性膜及びパターン形成方法 |
| JP5723744B2 (ja) | 2011-10-27 | 2015-05-27 | 富士フイルム株式会社 | パターン形成方法、積層レジストパターン、有機溶剤現像用の積層膜、レジスト組成物、電子デバイスの製造方法及び電子デバイス |
| JP5723854B2 (ja) * | 2011-12-28 | 2015-05-27 | 富士フイルム株式会社 | 感活性光線性又は感放射線性樹脂組成物、並びに、それを用いた感活性光線性又は感放射線性膜及びパターン形成方法 |
| JP5723802B2 (ja) | 2012-02-16 | 2015-05-27 | 富士フイルム株式会社 | 感活性光線性又は感放射線性樹脂組成物、及び該組成物を用いたパターン形成方法及びレジスト膜、並びにこれらを用いた電子デバイスの製造方法 |
| JP5719788B2 (ja) * | 2012-02-24 | 2015-05-20 | 富士フイルム株式会社 | パターン形成方法、感活性光線性又は感放射線性樹脂組成物、及びレジスト膜、並びにこれらを用いた電子デバイスの製造方法、及び電子デバイス |
| JP5933308B2 (ja) * | 2012-03-27 | 2016-06-08 | 富士フイルム株式会社 | 化学増幅型レジスト組成物、それを用いたレジスト膜、レジスト塗布マスクブランクス、レジストパターン形成方法、及び電子デバイスの製造方法 |
| WO2013146812A1 (ja) | 2012-03-27 | 2013-10-03 | 富士フイルム株式会社 | 感活性光線性又は感放射線性組成物、それを用いたレジスト膜、レジスト塗布マスクブランクス、レジストパターン形成方法、及びフォトマスク |
| JP6902896B2 (ja) * | 2017-03-29 | 2021-07-14 | 東京応化工業株式会社 | レジスト組成物、レジストパターン形成方法、含フッ素高分子化合物、及び化合物 |
| KR102389081B1 (ko) * | 2020-04-06 | 2022-04-20 | 아주대학교산학협력단 | PIPVE(perfluoroisopropyl vinyl ether)를 이용한 플라즈마 식각 방법 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007119678A (ja) * | 2005-10-31 | 2007-05-17 | Shin Etsu Chem Co Ltd | レジスト用重合体、レジスト材料及びパターン形成方法 |
| JP2007204385A (ja) * | 2006-01-31 | 2007-08-16 | Shin Etsu Chem Co Ltd | フッ素アルコール化合物の製造方法、含フッ素単量体、高分子化合物、レジスト材料及びパターン形成方法 |
| JP2009074085A (ja) * | 2007-08-30 | 2009-04-09 | Central Glass Co Ltd | ポジ型レジスト組成物 |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2841196B2 (ja) | 1988-03-24 | 1998-12-24 | 第一化学薬品株式会社 | α置換α−フルオロカルボン酸化合物 |
| JPH07117188A (ja) * | 1993-10-22 | 1995-05-09 | Asahi Glass Co Ltd | 農業用積層フィルム |
| JP3380128B2 (ja) | 1996-11-29 | 2003-02-24 | 富士通株式会社 | レジスト材料及びレジストパターンの形成方法 |
| JP2000089463A (ja) | 1998-09-11 | 2000-03-31 | Fuji Photo Film Co Ltd | ポジ型レジスト組成物 |
| CN1592867A (zh) * | 2001-05-17 | 2005-03-09 | 大金工业株式会社 | 含有含氟聚合物的非线性光学材料 |
| EP1498459A1 (en) * | 2002-04-25 | 2005-01-19 | Daikin Industries, Ltd. | Fluorinated optical material comprising fluoropolymer having functional group capable of forming complex with rare earth metal ion |
| JP2004175740A (ja) | 2002-11-28 | 2004-06-24 | Central Glass Co Ltd | α−置換アクリル酸ノルボルナニル類の製造方法 |
| JP4374980B2 (ja) * | 2002-12-25 | 2009-12-02 | ダイキン工業株式会社 | 含フッ素エーテル鎖を含む含フッ素ポリマーからなる固体電解質 |
| JP2007086514A (ja) | 2005-09-22 | 2007-04-05 | Fujifilm Corp | レジスト組成物及びそれを用いたパターン形成方法 |
| JP4671035B2 (ja) | 2005-10-14 | 2011-04-13 | 信越化学工業株式会社 | 化学増幅型レジスト材料及びパターン形成方法 |
| JP5226994B2 (ja) | 2006-09-11 | 2013-07-03 | 住友化学株式会社 | 化学増幅型レジスト組成物の酸発生剤の中間体 |
| KR100985929B1 (ko) | 2007-06-12 | 2010-10-06 | 샌트랄 글래스 컴퍼니 리미티드 | 불소 함유 화합물, 불소 함유 고분자 화합물, 포지티브형레지스트 조성물 및 이것을 사용한 패턴 형성방법 |
| JP5656431B2 (ja) * | 2009-03-31 | 2015-01-21 | 富士フイルム株式会社 | 反射防止フィルム、偏光板、画像表示装置、及び低屈折率層形成用塗布組成物 |
-
2008
- 2008-12-25 JP JP2008329453A patent/JP5589281B2/ja not_active Expired - Fee Related
-
2009
- 2009-12-15 KR KR1020117017219A patent/KR101287091B1/ko not_active Expired - Fee Related
- 2009-12-15 WO PCT/JP2009/070865 patent/WO2010073934A1/ja not_active Ceased
- 2009-12-15 US US13/141,945 patent/US8592540B2/en not_active Expired - Fee Related
- 2009-12-23 TW TW098144562A patent/TWI400224B/zh not_active IP Right Cessation
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007119678A (ja) * | 2005-10-31 | 2007-05-17 | Shin Etsu Chem Co Ltd | レジスト用重合体、レジスト材料及びパターン形成方法 |
| JP2007204385A (ja) * | 2006-01-31 | 2007-08-16 | Shin Etsu Chem Co Ltd | フッ素アルコール化合物の製造方法、含フッ素単量体、高分子化合物、レジスト材料及びパターン形成方法 |
| JP2009074085A (ja) * | 2007-08-30 | 2009-04-09 | Central Glass Co Ltd | ポジ型レジスト組成物 |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140038102A1 (en) * | 2012-07-31 | 2014-02-06 | Rohm And Haas Electronic Materials Llc | Photoresist compositions and methods of forming photolithographic patterns |
| US9158198B2 (en) * | 2012-07-31 | 2015-10-13 | Rohm And Haas Electronic Materials Llc | Photoresist compositions and methods of forming photolithographic patterns |
| US9482945B2 (en) | 2012-07-31 | 2016-11-01 | Rohm And Haas Electronic Materials Llc | Photoresist compositions and methods of forming photolithographic patterns |
| CN110325916B (zh) * | 2017-03-30 | 2023-04-11 | Jsr株式会社 | 感放射线性组合物及抗蚀剂图案形成方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20110110218A (ko) | 2011-10-06 |
| KR101287091B1 (ko) | 2013-07-17 |
| US8592540B2 (en) | 2013-11-26 |
| TWI400224B (zh) | 2013-07-01 |
| JP5589281B2 (ja) | 2014-09-17 |
| JP2010150367A (ja) | 2010-07-08 |
| TW201038516A (en) | 2010-11-01 |
| US20110318542A1 (en) | 2011-12-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5589281B2 (ja) | 含フッ素化合物、含フッ素高分子化合物、レジスト組成物及びそれを用いたパターン形成方法 | |
| JP5704046B2 (ja) | 重合性含フッ素スルホン酸塩類、含フッ素スルホン酸塩樹脂、レジスト組成物及びそれを用いたパターン形成方法 | |
| JP5401910B2 (ja) | 重合性アニオンを有する含フッ素スルホン塩類とその製造方法、含フッ素樹脂、レジスト組成物及びそれを用いたパターン形成方法 | |
| JP5742662B2 (ja) | 含フッ素スルホン酸塩類、光酸発生剤、レジスト組成物及びそれを用いたパターン形成方法 | |
| JP6019849B2 (ja) | 含フッ素スルホン酸塩類、含フッ素スルホン酸塩樹脂、レジスト組成物及びそれを用いたパターン形成方法 | |
| US8686098B2 (en) | Fluorine-containing compound, fluorine-containing polymer compound, resist composition, top coat composition and pattern formation method | |
| JP5151710B2 (ja) | 含フッ素化合物、含フッ素高分子化合物、ポジ型レジスト組成物及びそれを用いたパターン形成方法 | |
| JP5577572B2 (ja) | ポジ型レジスト組成物 | |
| JP5446144B2 (ja) | 含フッ素化合物、含フッ素高分子化合物、ネガ型レジスト組成物及びそれを用いたパターン形成方法 | |
| US9244345B1 (en) | Non-ionic photo-acid generating polymers for resist applications | |
| WO2013111667A1 (ja) | 含フッ素スルホン酸塩類、含フッ素スルホン酸塩樹脂、レジスト組成物及びそれを用いたパターン形成方法 | |
| US9221928B2 (en) | Fluorine-containing sulfonate resin, fluorine-containing N-sulfonyloxyimide resin, resist composition and pattern formation method | |
| JP5765473B2 (ja) | トップコート組成物 | |
| US9951164B2 (en) | Non-ionic aryl ketone based polymeric photo-acid generators | |
| JP2013227466A (ja) | 含フッ素スルホン酸塩樹脂、含フッ素n−スルホニルオキシイミド樹脂、レジスト組成物及びそれを用いたパターン形成方法 | |
| TW201302808A (zh) | 含氟磺酸鹽樹脂、含氟n-磺醯氧基醯亞胺樹脂、抗蝕劑組合物及使用其之圖案形成方法 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 09834737 Country of ref document: EP Kind code of ref document: A1 |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 13141945 Country of ref document: US |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |
|
| ENP | Entry into the national phase |
Ref document number: 20117017219 Country of ref document: KR Kind code of ref document: A |
|
| 122 | Ep: pct application non-entry in european phase |
Ref document number: 09834737 Country of ref document: EP Kind code of ref document: A1 |