JP2010003732A - Cmp用研磨組成物 - Google Patents
Cmp用研磨組成物 Download PDFInfo
- Publication number
- JP2010003732A JP2010003732A JP2008159004A JP2008159004A JP2010003732A JP 2010003732 A JP2010003732 A JP 2010003732A JP 2008159004 A JP2008159004 A JP 2008159004A JP 2008159004 A JP2008159004 A JP 2008159004A JP 2010003732 A JP2010003732 A JP 2010003732A
- Authority
- JP
- Japan
- Prior art keywords
- polishing
- acid
- cmp
- copper
- mass
- 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.)
- Granted
Links
- 238000005498 polishing Methods 0.000 title claims abstract description 172
- -1 nickel (II) compound Chemical class 0.000 claims abstract description 56
- 229910052802 copper Inorganic materials 0.000 claims abstract description 47
- 239000010949 copper Substances 0.000 claims abstract description 47
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 46
- 150000001875 compounds Chemical class 0.000 claims abstract description 25
- 239000006061 abrasive grain Substances 0.000 claims abstract description 23
- JPVYNHNXODAKFH-UHFFFAOYSA-N Cu2+ Chemical compound [Cu+2] JPVYNHNXODAKFH-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000007800 oxidant agent Substances 0.000 claims abstract description 17
- 238000000034 method Methods 0.000 claims abstract description 14
- 239000000203 mixture Substances 0.000 claims description 93
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 19
- VEQPNABPJHWNSG-UHFFFAOYSA-N Nickel(2+) Chemical compound [Ni+2] VEQPNABPJHWNSG-UHFFFAOYSA-N 0.000 claims description 14
- 239000008119 colloidal silica Substances 0.000 claims description 5
- 229910002651 NO3 Inorganic materials 0.000 claims description 2
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 claims description 2
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 claims 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims 1
- 238000005260 corrosion Methods 0.000 abstract description 10
- 230000007797 corrosion Effects 0.000 abstract description 10
- 230000002349 favourable effect Effects 0.000 abstract 1
- 230000001590 oxidative effect Effects 0.000 abstract 1
- 230000002265 prevention Effects 0.000 abstract 1
- 229910052751 metal Inorganic materials 0.000 description 20
- 239000002184 metal Substances 0.000 description 20
- 230000000052 comparative effect Effects 0.000 description 18
- 230000000694 effects Effects 0.000 description 17
- 150000003839 salts Chemical class 0.000 description 15
- 239000002253 acid Substances 0.000 description 13
- 150000007524 organic acids Chemical class 0.000 description 11
- 150000003863 ammonium salts Chemical class 0.000 description 10
- 230000004888 barrier function Effects 0.000 description 10
- 229920002635 polyurethane Polymers 0.000 description 10
- 239000004814 polyurethane Substances 0.000 description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 9
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 9
- 235000014113 dietary fatty acids Nutrition 0.000 description 8
- 239000000194 fatty acid Substances 0.000 description 8
- 229930195729 fatty acid Natural products 0.000 description 8
- 229920000642 polymer Polymers 0.000 description 8
- 229920003169 water-soluble polymer Polymers 0.000 description 8
- 239000000377 silicon dioxide Substances 0.000 description 7
- DHMQDGOQFOQNFH-UHFFFAOYSA-N Glycine Chemical compound NCC(O)=O DHMQDGOQFOQNFH-UHFFFAOYSA-N 0.000 description 6
- OFOBLEOULBTSOW-UHFFFAOYSA-N Malonic acid Chemical compound OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 6
- 229910052783 alkali metal Inorganic materials 0.000 description 6
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 description 6
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 6
- 239000006185 dispersion Substances 0.000 description 6
- 235000005985 organic acids Nutrition 0.000 description 6
- 239000002245 particle Substances 0.000 description 6
- 229920001515 polyalkylene glycol Polymers 0.000 description 6
- 229920000036 polyvinylpyrrolidone Polymers 0.000 description 6
- 239000001267 polyvinylpyrrolidone Substances 0.000 description 6
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 description 6
- 230000001629 suppression Effects 0.000 description 6
- 239000004094 surface-active agent Substances 0.000 description 6
- 229920002396 Polyurea Polymers 0.000 description 5
- 150000007513 acids Chemical class 0.000 description 5
- 238000005530 etching Methods 0.000 description 5
- VXNZUUAINFGPBY-UHFFFAOYSA-N ethyl ethylene Natural products CCC=C VXNZUUAINFGPBY-UHFFFAOYSA-N 0.000 description 5
- LYCAIKOWRPUZTN-UHFFFAOYSA-N ethylene glycol Natural products OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 229920005989 resin Polymers 0.000 description 5
- 239000011347 resin Substances 0.000 description 5
- KJUGUADJHNHALS-UHFFFAOYSA-N 1H-tetrazole Chemical compound C=1N=NNN=1 KJUGUADJHNHALS-UHFFFAOYSA-N 0.000 description 4
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 4
- VZCYOOQTPOCHFL-OWOJBTEDSA-N Fumaric acid Chemical compound OC(=O)\C=C\C(O)=O VZCYOOQTPOCHFL-OWOJBTEDSA-N 0.000 description 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- 229920002125 Sokalan® Polymers 0.000 description 4
- YRKCREAYFQTBPV-UHFFFAOYSA-N acetylacetone Chemical compound CC(=O)CC(C)=O YRKCREAYFQTBPV-UHFFFAOYSA-N 0.000 description 4
- 230000009471 action Effects 0.000 description 4
- 239000000654 additive Substances 0.000 description 4
- 230000000996 additive effect Effects 0.000 description 4
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 description 4
- QRUDEWIWKLJBPS-UHFFFAOYSA-N benzotriazole Chemical compound C1=CC=C2N[N][N]C2=C1 QRUDEWIWKLJBPS-UHFFFAOYSA-N 0.000 description 4
- 239000012964 benzotriazole Substances 0.000 description 4
- 229920001577 copolymer Polymers 0.000 description 4
- 239000003480 eluent Substances 0.000 description 4
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 4
- WLJVNTCWHIRURA-UHFFFAOYSA-N pimelic acid Chemical compound OC(=O)CCCCCC(O)=O WLJVNTCWHIRURA-UHFFFAOYSA-N 0.000 description 4
- 239000004584 polyacrylic acid Substances 0.000 description 4
- 229920005749 polyurethane resin Polymers 0.000 description 4
- 159000000000 sodium salts Chemical class 0.000 description 4
- 239000002904 solvent Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 4
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 3
- WBIQQQGBSDOWNP-UHFFFAOYSA-N 2-dodecylbenzenesulfonic acid Chemical compound CCCCCCCCCCCCC1=CC=CC=C1S(O)(=O)=O WBIQQQGBSDOWNP-UHFFFAOYSA-N 0.000 description 3
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 3
- ATRRKUHOCOJYRX-UHFFFAOYSA-N Ammonium bicarbonate Chemical compound [NH4+].OC([O-])=O ATRRKUHOCOJYRX-UHFFFAOYSA-N 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- 239000004471 Glycine Substances 0.000 description 3
- WMFOQBRAJBCJND-UHFFFAOYSA-M Lithium hydroxide Chemical compound [Li+].[OH-] WMFOQBRAJBCJND-UHFFFAOYSA-M 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 229920002845 Poly(methacrylic acid) Polymers 0.000 description 3
- 239000002202 Polyethylene glycol Substances 0.000 description 3
- 239000004793 Polystyrene Substances 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 description 3
- 239000001099 ammonium carbonate Substances 0.000 description 3
- 229910001870 ammonium persulfate Inorganic materials 0.000 description 3
- 125000000129 anionic group Chemical group 0.000 description 3
- 239000003945 anionic surfactant Substances 0.000 description 3
- 239000012459 cleaning agent Substances 0.000 description 3
- 229940060296 dodecylbenzenesulfonic acid Drugs 0.000 description 3
- 230000003628 erosive effect Effects 0.000 description 3
- 125000005842 heteroatom Chemical group 0.000 description 3
- 150000002391 heterocyclic compounds Chemical class 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 235000006408 oxalic acid Nutrition 0.000 description 3
- 239000003002 pH adjusting agent Substances 0.000 description 3
- VLTRZXGMWDSKGL-UHFFFAOYSA-N perchloric acid Chemical compound OCl(=O)(=O)=O VLTRZXGMWDSKGL-UHFFFAOYSA-N 0.000 description 3
- 229920005575 poly(amic acid) Polymers 0.000 description 3
- 229920001223 polyethylene glycol Polymers 0.000 description 3
- 229920002223 polystyrene Polymers 0.000 description 3
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 3
- 229910052715 tantalum Inorganic materials 0.000 description 3
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 3
- 229910052719 titanium Inorganic materials 0.000 description 3
- 239000010936 titanium Substances 0.000 description 3
- BJEPYKJPYRNKOW-REOHCLBHSA-N (S)-malic acid Chemical compound OC(=O)[C@@H](O)CC(O)=O BJEPYKJPYRNKOW-REOHCLBHSA-N 0.000 description 2
- YXIWHUQXZSMYRE-UHFFFAOYSA-N 1,3-benzothiazole-2-thiol Chemical compound C1=CC=C2SC(S)=NC2=C1 YXIWHUQXZSMYRE-UHFFFAOYSA-N 0.000 description 2
- RTBFRGCFXZNCOE-UHFFFAOYSA-N 1-methylsulfonylpiperidin-4-one Chemical compound CS(=O)(=O)N1CCC(=O)CC1 RTBFRGCFXZNCOE-UHFFFAOYSA-N 0.000 description 2
- LNETULKMXZVUST-UHFFFAOYSA-N 1-naphthoic acid Chemical compound C1=CC=C2C(C(=O)O)=CC=CC2=C1 LNETULKMXZVUST-UHFFFAOYSA-N 0.000 description 2
- HZAXFHJVJLSVMW-UHFFFAOYSA-N 2-Aminoethan-1-ol Chemical compound NCCO HZAXFHJVJLSVMW-UHFFFAOYSA-N 0.000 description 2
- IJFXRHURBJZNAO-UHFFFAOYSA-N 3-hydroxybenzoic acid Chemical compound OC(=O)C1=CC=CC(O)=C1 IJFXRHURBJZNAO-UHFFFAOYSA-N 0.000 description 2
- FJKROLUGYXJWQN-UHFFFAOYSA-N 4-hydroxybenzoic acid Chemical compound OC(=O)C1=CC=C(O)C=C1 FJKROLUGYXJWQN-UHFFFAOYSA-N 0.000 description 2
- KLSJWNVTNUYHDU-UHFFFAOYSA-N Amitrole Chemical compound NC1=NC=NN1 KLSJWNVTNUYHDU-UHFFFAOYSA-N 0.000 description 2
- 229910000013 Ammonium bicarbonate Inorganic materials 0.000 description 2
- FERIUCNNQQJTOY-UHFFFAOYSA-N Butyric acid Chemical compound CCCC(O)=O FERIUCNNQQJTOY-UHFFFAOYSA-N 0.000 description 2
- 229920000858 Cyclodextrin Polymers 0.000 description 2
- ONIBWKKTOPOVIA-SCSAIBSYSA-N D-Proline Chemical compound OC(=O)[C@H]1CCCN1 ONIBWKKTOPOVIA-SCSAIBSYSA-N 0.000 description 2
- QNAYBMKLOCPYGJ-UWTATZPHSA-N D-alanine Chemical compound C[C@@H](N)C(O)=O QNAYBMKLOCPYGJ-UWTATZPHSA-N 0.000 description 2
- QNAYBMKLOCPYGJ-UHFFFAOYSA-N D-alpha-Ala Natural products CC([NH3+])C([O-])=O QNAYBMKLOCPYGJ-UHFFFAOYSA-N 0.000 description 2
- RGHNJXZEOKUKBD-SQOUGZDYSA-N D-gluconic acid Chemical compound OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C(O)=O RGHNJXZEOKUKBD-SQOUGZDYSA-N 0.000 description 2
- KDXKERNSBIXSRK-RXMQYKEDSA-N D-lysine Chemical compound NCCCC[C@@H](N)C(O)=O KDXKERNSBIXSRK-RXMQYKEDSA-N 0.000 description 2
- FEWJPZIEWOKRBE-JCYAYHJZSA-N Dextrotartaric acid Chemical compound OC(=O)[C@H](O)[C@@H](O)C(O)=O FEWJPZIEWOKRBE-JCYAYHJZSA-N 0.000 description 2
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 description 2
- QUSNBJAOOMFDIB-UHFFFAOYSA-N Ethylamine Chemical compound CCN QUSNBJAOOMFDIB-UHFFFAOYSA-N 0.000 description 2
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 2
- AEMRFAOFKBGASW-UHFFFAOYSA-N Glycolic acid Chemical compound OCC(O)=O AEMRFAOFKBGASW-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- AFVFQIVMOAPDHO-UHFFFAOYSA-N Methanesulfonic acid Chemical compound CS(O)(=O)=O AFVFQIVMOAPDHO-UHFFFAOYSA-N 0.000 description 2
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- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 2
- KDYFGRWQOYBRFD-UHFFFAOYSA-N Succinic acid Natural products OC(=O)CCC(O)=O KDYFGRWQOYBRFD-UHFFFAOYSA-N 0.000 description 2
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- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Natural products [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 description 2
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 2
- WFDIJRYMOXRFFG-UHFFFAOYSA-N acetic acid anhydride Natural products CC(=O)OC(C)=O WFDIJRYMOXRFFG-UHFFFAOYSA-N 0.000 description 2
- 239000001361 adipic acid Substances 0.000 description 2
- 235000011037 adipic acid Nutrition 0.000 description 2
- 125000001931 aliphatic group Chemical group 0.000 description 2
- 150000008044 alkali metal hydroxides Chemical class 0.000 description 2
- 125000000217 alkyl group Chemical group 0.000 description 2
- BJEPYKJPYRNKOW-UHFFFAOYSA-N alpha-hydroxysuccinic acid Natural products OC(=O)C(O)CC(O)=O BJEPYKJPYRNKOW-UHFFFAOYSA-N 0.000 description 2
- 150000001412 amines Chemical class 0.000 description 2
- 229940024606 amino acid Drugs 0.000 description 2
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- 235000012538 ammonium bicarbonate Nutrition 0.000 description 2
- 150000008064 anhydrides Chemical class 0.000 description 2
- JFCQEDHGNNZCLN-UHFFFAOYSA-N anhydrous glutaric acid Natural products OC(=O)CCCC(O)=O JFCQEDHGNNZCLN-UHFFFAOYSA-N 0.000 description 2
- 239000012752 auxiliary agent Substances 0.000 description 2
- 150000007514 bases Chemical class 0.000 description 2
- WPYMKLBDIGXBTP-UHFFFAOYSA-N benzoic acid Chemical compound OC(=O)C1=CC=CC=C1 WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 description 2
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- 239000003054 catalyst Substances 0.000 description 2
- 125000002091 cationic group Chemical group 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
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- 235000015165 citric acid Nutrition 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
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- 238000009713 electroplating Methods 0.000 description 2
- 150000002148 esters Chemical class 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 239000001530 fumaric acid Substances 0.000 description 2
- 235000011087 fumaric acid Nutrition 0.000 description 2
- BTCSSZJGUNDROE-UHFFFAOYSA-N gamma-aminobutyric acid Chemical compound NCCCC(O)=O BTCSSZJGUNDROE-UHFFFAOYSA-N 0.000 description 2
- KWIUHFFTVRNATP-UHFFFAOYSA-N glycine betaine Chemical compound C[N+](C)(C)CC([O-])=O KWIUHFFTVRNATP-UHFFFAOYSA-N 0.000 description 2
- MNWFXJYAOYHMED-UHFFFAOYSA-N heptanoic acid Chemical compound CCCCCCC(O)=O MNWFXJYAOYHMED-UHFFFAOYSA-N 0.000 description 2
- FUZZWVXGSFPDMH-UHFFFAOYSA-N hexanoic acid Chemical compound CCCCCC(O)=O FUZZWVXGSFPDMH-UHFFFAOYSA-N 0.000 description 2
- 150000004677 hydrates Chemical class 0.000 description 2
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- 230000006872 improvement Effects 0.000 description 2
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- VCJMYUPGQJHHFU-UHFFFAOYSA-N iron(3+);trinitrate Chemical compound [Fe+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O VCJMYUPGQJHHFU-UHFFFAOYSA-N 0.000 description 2
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- 239000007788 liquid Substances 0.000 description 2
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 description 2
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- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 description 2
- 229910052750 molybdenum Inorganic materials 0.000 description 2
- UFWIBTONFRDIAS-UHFFFAOYSA-N naphthalene-acid Natural products C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 229910017604 nitric acid Inorganic materials 0.000 description 2
- 239000006174 pH buffer Substances 0.000 description 2
- 239000006179 pH buffering agent Substances 0.000 description 2
- YWAKXRMUMFPDSH-UHFFFAOYSA-N pentene Chemical compound CCCC=C YWAKXRMUMFPDSH-UHFFFAOYSA-N 0.000 description 2
- 150000002978 peroxides Chemical class 0.000 description 2
- 150000004968 peroxymonosulfuric acids Chemical class 0.000 description 2
- JRKICGRDRMAZLK-UHFFFAOYSA-L persulfate group Chemical group S(=O)(=O)([O-])OOS(=O)(=O)[O-] JRKICGRDRMAZLK-UHFFFAOYSA-L 0.000 description 2
- XNGIFLGASWRNHJ-UHFFFAOYSA-N phthalic acid Chemical compound OC(=O)C1=CC=CC=C1C(O)=O XNGIFLGASWRNHJ-UHFFFAOYSA-N 0.000 description 2
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 2
- KMUONIBRACKNSN-UHFFFAOYSA-N potassium dichromate Chemical compound [K+].[K+].[O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O KMUONIBRACKNSN-UHFFFAOYSA-N 0.000 description 2
- FSYKKLYZXJSNPZ-UHFFFAOYSA-N sarcosine Chemical compound C[NH2+]CC([O-])=O FSYKKLYZXJSNPZ-UHFFFAOYSA-N 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 235000012239 silicon dioxide Nutrition 0.000 description 2
- JQWHASGSAFIOCM-UHFFFAOYSA-M sodium periodate Chemical compound [Na+].[O-]I(=O)(=O)=O JQWHASGSAFIOCM-UHFFFAOYSA-M 0.000 description 2
- 238000004544 sputter deposition Methods 0.000 description 2
- 239000011975 tartaric acid Substances 0.000 description 2
- 235000002906 tartaric acid Nutrition 0.000 description 2
- XOAAWQZATWQOTB-UHFFFAOYSA-N taurine Chemical compound NCCS(O)(=O)=O XOAAWQZATWQOTB-UHFFFAOYSA-N 0.000 description 2
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- 150000003624 transition metals Chemical group 0.000 description 1
- ITMCEJHCFYSIIV-UHFFFAOYSA-N triflic acid Chemical compound OS(=O)(=O)C(F)(F)F ITMCEJHCFYSIIV-UHFFFAOYSA-N 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- 229940005605 valeric acid Drugs 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
- 229910001928 zirconium oxide Inorganic materials 0.000 description 1
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- Mechanical Treatment Of Semiconductor (AREA)
Abstract
【解決手段】銅(II)またはニッケル(II)の化合物0.05〜5質量%、研磨砥粒0.01〜10質量%、および酸化剤0.01〜10質量%を含有してなることを特徴とするCMP用研磨組成物、および当該CMP用研磨組成物を使用することを特徴とする銅膜のCMP研磨方法。
【選択図】なし
Description
当該化合物は、無機塩でもよく、有機酸塩でもよく、水酸化物でもよく、キレート錯体化合物でもよい。また、これらの化合物は、水和物でもよく、無水和物でもよい。本発明のCMP用研磨組成物は水を分散媒としているので、特段ことわりのないかぎり水和物と無水和物を区別しない。
表1に記載の銅(II)またはニッケル(II)の化合物、平均粒径120nmのコロイダルシリカ1.0質量%、過硫酸アンモニウム1.5質量%、ベンゾトリアゾール0.001質量%、ドデシルベンゼンスルホン酸0.02質量%、数平均分子量17,000のポリビニルピロリドンと1−ブテンの共重合体(P−904LC;ISP社製)0.03質量%、数平均分子量200のポリエチレングリコール0.02質量%、グリシン1.0質量%、水酸化カリウム0.4質量%、炭酸水素アンモニウム0.3質量%および水(残分)からなるCMP用研磨組成物No.1〜5を製造した。
上記実施例1から、銅(II)またはニッケル(II)の化合物を除いた組成からなる比較用CMP用研磨組成物である比較1を製造した。また、上記実施例1の銅(II)またはニッケル(II)の化合物に換え、表1に記載の金属塩化合物を使用した組成からなる比較用CMP用研磨組成物である比較2〜7を製造した。
上記実施例1〜5、比較例1〜7で得たCMP用研磨組成物について、電解めっき法で銅膜をシリコン基板上に4,000nm成膜したウエハを3×3cm正方形に切断した銅ブランケットテストピースを被研磨体として、下記研磨条件による研磨の評価を行った。結果を表1に示す。なお、研磨量は、Loresta GP(三菱化学製)を使用し、研磨前後の膜厚差から測定し、銅の腐食については光学顕微鏡で観察した。銅の腐食は、銅(II)またはニッケル(II)の化合物、金属塩化合物を含有しない比較例1の腐食状態を基準として、これとの比較により評価した。
研磨機:NF−300(ナノファクター社製)、研磨パッド:IC1000(XY溝付)(ロームアンドハース社製)、研磨時間:30秒、定盤回転数:60rpm、キャリア回転数:60rpm、研磨加工圧力:2psi、研磨液供給速度:30ml/分。
表2に記載の銅(II)またはニッケル(II)の化合物、平均粒径120nmのコロイダルシリカ1.0質量%、過硫酸アンモニウム1.5質量%、ベンゾトリアゾール0.001質量%、ドデシルベンゼンスルホン酸0.02質量%、数平均分子量17,000のポリビニルピロリドンと1−ブテンの共重合体(P−904LC;ISP社製)0.03質量%、数平均分子量200のポリエチレングリコール0.02質量%、グリシン1.0質量%、水酸化カリウム0.4質量%、炭酸水素アンモニウム0.3質量%および水(残分)からなるCMP用研磨組成物No.6〜12を製造した。
上記実施例6から銅(II)またはニッケル(II)の化合物を除いた組成からなる比較用CMP用研磨組成物である比較8を製造した。また、上記実施例6の銅(II)またはニッケル(II)の化合物に換え、表2に記載の金属塩化合物を使用した組成からなる比較用CMP用研磨組成物である比較9を製造した。
上記実施例6〜12、比較例8、9で得たCMP用研磨組成物について、テトラキスエトキシシランを用いたプラズマCVD法で硬質シリカ膜を500nm成膜したウエハの硬質シリカ層に深さ500nm、長さ120μm、幅120μmの正方形の溝を作成した後、スパッタリング法でタンタル膜を25nm堆積させ、さらにスパッタリングで100nmの銅シード層を堆積した後、電解めっき法により銅膜1,000nmを形成した8インチウエハを5×5cm正方形に切断したテストピースを被研磨体として下記条件による研磨の評価を行った。なお、研磨量は、Loresta GP(三菱化学製)を使用し、研磨前後の膜厚差から測定し、ディッシングは120μm×120μmの正方形銅配線部分の最凸部と最凹部の段差を原子間力顕微鏡(AFM)Nanopics(セイコーインスツルメンツ社製)を用いて測定した。
研磨機:NF−300(ナノファクター社製)、研磨パッド:IC1000(XY溝付)(ロームアンドハース社製)、研磨時間:1000nmの銅膜をすべて除去する時間の2倍の研磨時間、定盤回転数:60rpm、キャリア回転数:60rpm、研磨加工圧力:1.4psi、研磨液供給速度:30ml/分。
Claims (6)
- 銅(II)またはニッケル(II)の化合物0.05〜5質量%、研磨砥粒0.01〜10質量%、および酸化剤0.01〜10質量%を含有してなることを特徴とするCMP用研磨組成物。
- 銅(II)またはニッケル(II)の化合物が、硫酸塩、硝酸塩または酢酸塩である請求項1に記載のCMP用研磨組成物。
- ニッケル(II)の化合物が、ニッケル(II)の塩化合物である請求項1または2に記載のCMP用研磨組成物。
- 酸化剤が、過硫酸塩化合物である請求項1〜3のいずれか1項に記載のCMP用研磨組成物。
- 研磨砥粒が、コロイダルシリカである請求項1〜4のいずれか1項に記載のCMP用研磨組成物。
- 請求項1〜5のいずれか1項に記載のCMP用研磨組成物を使用することを特徴とする銅膜のCMP研磨方法。
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