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WO2013100464A1 - Composé pour un élément optoélectronique organique, élément organique émettant de la lumière le comprenant et dispositif d'affichage comprenant l'élément organique émettant de la lumière - Google Patents

Composé pour un élément optoélectronique organique, élément organique émettant de la lumière le comprenant et dispositif d'affichage comprenant l'élément organique émettant de la lumière Download PDF

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WO2013100464A1
WO2013100464A1 PCT/KR2012/011022 KR2012011022W WO2013100464A1 WO 2013100464 A1 WO2013100464 A1 WO 2013100464A1 KR 2012011022 W KR2012011022 W KR 2012011022W WO 2013100464 A1 WO2013100464 A1 WO 2013100464A1
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조영경
홍진석
강의수
류동완
이한일
정성현
채미영
허달호
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Cheil Industries Inc
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Definitions

  • the present invention relates to a compound for an organic optoelectronic device capable of providing an organic optoelectronic device having excellent life, efficiency, electrochemical stability, and thermal stability, an organic light emitting device including the same, and a display device including the organic light emitting device.
  • An organic optoelectric device refers to a device requiring charge exchange between an electrode and an organic material using holes or electrons.
  • Organic optoelectronic devices can be divided into two types according to the operation principle.
  • excitons are formed in the organic material layer by photons introduced into the device from an external light source, and the excitons are separated into electrons and holes, and these electrons and holes are transferred to different electrodes to be used as current sources (voltage sources). It is an electronic device of the form.
  • the second is an electronic device in which holes or electrons are injected into an organic semiconductor forming an interface with the electrodes by applying voltage or current to two or more electrodes, and operated by the injected electrons and holes.
  • Examples of an organic optoelectronic device include an organic photoelectric device, an organic light emitting device, an organic solar cell, an organic photo conductor drum, and an organic transistor, all of which are used to inject or transport holes or electrons to drive the device. Injection or transport materials, or luminescent materials.
  • organic light emitting diodes are attracting attention as the demand for flat panel displays increases.
  • organic light emitting phenomenon refers to a phenomenon of converting electrical energy into light energy using an organic material.
  • Such an organic light emitting device converts electrical energy into light by applying a current to an organic light emitting material, and has a structure in which a functional organic material layer is inserted between an anode and a cathode.
  • the organic material layer is often made of a multi-layered structure composed of different materials to increase the efficiency and stability of the organic light emitting device, for example, it may be made of a hole injection layer, a hole transport layer, a light emitting layer, an electron transport layer, an electron injection layer.
  • the material used as the organic material layer in the organic light emitting device may be classified into a light emitting material and a charge transport material, such as a hole injection material, a hole transport material, an electron transport material, an electron injection material, and the like according to a function.
  • a charge transport material such as a hole injection material, a hole transport material, an electron transport material, an electron injection material, and the like according to a function.
  • the light emitting materials may be classified into blue, green, and red light emitting materials and yellow and orange light emitting materials required to realize better natural colors according to light emission colors.
  • the maximum emission wavelength is shifted to a long wavelength due to the intermolecular interaction, and the color purity decreases or the efficiency of the device decreases due to the emission attenuation effect.
  • the host / dopant system can be used as a light emitting material.
  • materials constituting the organic material layer in the device such as a hole injection material, a hole transport material, a light emitting material, an electron transport material, an electron injection material, a host and / or a dopant in the light emitting material, etc.
  • a hole injection material such as a hole injection material, a hole transport material, a light emitting material, an electron transport material, an electron injection material, a host and / or a dopant in the light emitting material, etc.
  • a hole injection material such as a hole transport material, a light emitting material, an electron transport material, an electron injection material, a host and / or a dopant in the light emitting material, etc.
  • This stable and efficient material should be preceded, and development of a stable and efficient organic material layer for an organic light emitting device has not been made yet, and therefore, development of new materials is continuously required.
  • the necessity of such a material development is the same in the other organic optoelectronic devices described above.
  • the low molecular weight organic light emitting diode is manufactured in the form of a thin film by vacuum evaporation method, so the efficiency and lifespan performance is good, and the high molecular weight organic light emitting diode using the inkjet or spin coating method has low initial investment cost. Large area has an advantage.
  • Both low molecular weight organic light emitting diodes and high molecular weight organic light emitting diodes are attracting attention as next-generation displays because they have advantages such as self-luminous, high-speed response, wide viewing angle, ultra-thin, high definition, durability, and wide driving temperature range.
  • advantages such as self-luminous, high-speed response, wide viewing angle, ultra-thin, high definition, durability, and wide driving temperature range.
  • LCD liquid crystal display
  • the response speed is 1000 times faster than the LCD in microseconds, it is possible to implement a perfect video without afterimages. Therefore, it is expected to be spotlighted as the most suitable display in line with the recent multimedia era.
  • the luminous efficiency In order to increase the size, the luminous efficiency must be increased and the life of the device must be accompanied. In this case, the light emitting efficiency of the device should be smoothly coupled to the holes and electrons in the light emitting layer.
  • the electron mobility of the organic material is generally slower than the hole mobility, in order to efficiently combine holes and electrons in the light emitting layer, an efficient electron transport layer is used to increase the electron injection and mobility from the cathode, It should be able to block the movement of holes.
  • a compound for an organic optoelectronic device which can play a role of hole injection and transport or electron injection and transport, and can act as a light emitting host with an appropriate dopant.
  • An organic light emitting diode having excellent lifespan, efficiency, driving voltage, electrochemical stability, and thermal stability and a display device including the same are provided.
  • a compound for an organic optoelectronic device represented by a combination of the following Chemical Formulas 1 and 2 is provided.
  • X is -O-, -S-, -S (O)-or -S (O) 2-
  • Ar 1 and Ar 2 are independently substituted or unsubstituted C6 to C30 aryl Group or a substituted or unsubstituted C2 to C30 heteroaryl group
  • L 1 and L 2 are independently a single bond, a substituted or unsubstituted C2 to C10 alkenylene group, a substituted or unsubstituted C2 to C10 alkynylene group
  • m1 and m2 are independently an integer of 0 or 1 and any one of m1 and m2 is 1, n1 and n2 Is independently an integer of any one of 0 to 3
  • R 1 to R 7 is independently hydrogen, deuterium, substituted or unsubstituted C1 to C
  • Formula 1 may be represented by the following formula (3).
  • Ar 2 is a substituted or unsubstituted C6 to C30 aryl group or a substituted or unsubstituted C2 to C30 heteroaryl group
  • L 2 is a single bond, a substituted or unsubstituted C2 to C10 alkenylene group, A substituted or unsubstituted C2 to C10 alkynylene group, a substituted or unsubstituted C6 to C30 arylene group, or a substituted or unsubstituted C2 to C30 heteroarylene group
  • m2 is 1, n2 is any one of 0 to 3 Is an integer
  • R 1 to R 3 , R 6 or R 7 are independently hydrogen, deuterium, a substituted or unsubstituted C1 to C10 alkyl group, a substituted or unsubstituted C6 to C30 aryl group, or a substituted or unsubstituted C2 to C30 Heteroaryl group, two * of the
  • the compound for an organic optoelectronic device may be represented by the following formula (4).
  • X is -O-, -S-, -S (O)-or -S (O) 2-
  • Ar 1 and Ar 2 are independently substituted or unsubstituted C6 to C30 aryl group or A substituted or unsubstituted C2 to C30 heteroaryl group
  • L 1 and L 2 are independently a single bond, a substituted or unsubstituted C2 to C10 alkenylene group, a substituted or unsubstituted C2 to C10 alkynylene group, a substituted or Unsubstituted C6 to C30 arylene group or substituted or unsubstituted C2 to C30 heteroarylene group
  • m1 and m2 are independently an integer of 0 or 1 either m1 and m2 is 1, n1 and n2 are independent Is an integer of any one of 0 to 3
  • R 1 to R 7 are independently hydrogen, deuterium, a substituted or unsubstituted C1 to C10 al
  • the compound for an organic optoelectronic device may be represented by the following formula (5).
  • Ar 2 is a substituted or unsubstituted C6 to C30 aryl group or a substituted or unsubstituted C2 to C30 heteroaryl group
  • L 2 is a single bond, a substituted or unsubstituted C2 to C10 alkenylene group, A substituted or unsubstituted C2 to C10 alkynylene group, a substituted or unsubstituted C6 to C30 arylene group, or a substituted or unsubstituted C2 to C30 heteroarylene group
  • m2 is 1, n2 is any one of 0 to 3 Integer
  • R 1 to R 7 are independently hydrogen, deuterium, a substituted or unsubstituted C1 to C10 alkyl group, a substituted or unsubstituted C6 to C30 aryl group, or a substituted or unsubstituted C2 to C30 heteroaryl group.
  • Ar 1 and Ar 2 are independently substituted or unsubstituted imidazolyl group, substituted or unsubstituted triazolyl group, substituted or unsubstituted tetrazolyl group, substituted or unsubstituted carbazolyl group, substituted or unsubstituted Substituted oxadiazolyl group, substituted or unsubstituted oxtriazolyl group, substituted or unsubstituted thiatriazolyl group, substituted or unsubstituted benzimidazolyl group, substituted or unsubstituted benzotriazolyl group, substituted or Unsubstituted pyridinyl group, substituted or unsubstituted pyrimidinyl group, substituted or unsubstituted triazinyl group, substituted or unsubstituted pyrazinyl group, substituted or unsubstituted pyridazinyl group, substituted or
  • Ar 1 and Ar 2 are independently a substituted or unsubstituted phenyl group, a substituted or unsubstituted naphthyl group, a substituted or unsubstituted phenanthrenyl group, a substituted or unsubstituted anthracenyl group, a substituted or unsubstituted fluorenyl group , Substituted or unsubstituted triphenylenyl group, substituted or unsubstituted spiro-fluorenyl group, substituted or unsubstituted terphenyl group, substituted or unsubstituted pyrenyl group, substituted or unsubstituted perrylenyl group, or May be a combination.
  • Ar 1 and Ar 2 are independently a substituted or unsubstituted phenyl group, a substituted or unsubstituted naphthyl group, a substituted or unsubstituted anthracenyl group, a substituted or unsubstituted phenanthryl group, a substituted or unsubstituted naphthacenyl group , Substituted or unsubstituted pyrenyl group, substituted or unsubstituted biphenylyl group, substituted or unsubstituted p-terphenyl group, substituted or unsubstituted m-terphenyl group, substituted or unsubstituted chrysenyl group, substituted or unsubstituted Substituted triphenylenyl group, substituted or unsubstituted perenyl group, substituted or unsubstituted indenyl group, substituted or unsubstituted furanyl
  • the compound for an organic optoelectronic device may be a triplet excitation energy (T1) 2.0 eV or more.
  • the organic optoelectronic device may be selected from the group consisting of an organic photoelectric device, an organic light emitting device, an organic solar cell, an organic transistor, an organic photosensitive drum, and an organic memory device.
  • the organic light emitting device comprising an anode, a cathode and at least one organic thin film layer interposed between the anode and the cathode
  • at least one layer of the organic thin film layer is the above-described organic optoelectronic It provides an organic light emitting device comprising a compound for the device.
  • the organic thin film layer may be selected from the group consisting of a light emitting layer, a hole transport layer, a hole injection layer, an electron transport layer, an electron injection layer, a hole blocking layer and a combination thereof.
  • the compound for an organic optoelectronic device may be included in a hole transport layer or a hole injection layer.
  • the compound for an organic optoelectronic device may be included in a light emitting layer.
  • the compound for an organic optoelectronic device may be used as a phosphorescent or fluorescent host material in the light emitting layer.
  • a display device including the organic light emitting diode described above is provided.
  • Such a compound can be used as a hole injection / transport material, a host material, or an electron injection / transport material for the light emitting layer.
  • the organic optoelectronic device using the same has excellent electrochemical and thermal stability, and has excellent life characteristics, and may have high luminous efficiency even at a low driving voltage.
  • 1 to 5 are cross-sectional views illustrating various embodiments of an organic light emitting device that may be manufactured using a compound for an organic optoelectronic device according to an embodiment of the present invention.
  • hole injection layer 230 light emitting layer + electron transport layer
  • substituted unless otherwise defined, at least one hydrogen of a substituent or a compound is a deuterium, a halogen group, a hydroxy group, an amino group, a substituted or unsubstituted C1 to C30 amine group, a nitro group, a substituted or unsubstituted C1 to C10 such as C3 to C40 silyl group, C1 to C30 alkyl group, C1 to C10 alkylsilyl group, C3 to C30 cycloalkyl group, C6 to C30 aryl group, C1 to C20 alkoxy group, fluoro group, trifluoromethyl group, etc.
  • substituted halogen, hydroxy, amino, substituted or unsubstituted C1 to C20 amine group, nitro group, substituted or unsubstituted C3 to C40 silyl group, C1 to C30 alkyl group, C1 to C10 alkylsilyl group, C3 to Two adjacent substituents of C1 to C10 trifluoroalkyl group or cyano group such as C30 cycloalkyl group, C6 to C30 aryl group, C1 to C20 alkoxy group, fluoro group and trifluoromethyl group may be fused to form a ring. .
  • hetero means containing 1 to 3 heteroatoms selected from the group consisting of N, O, S, and P in one functional group, and the remainder is carbon.
  • an "alkyl group” means an aliphatic hydrocarbon group.
  • the alkyl group may be a "saturated alkyl group” that does not contain any double or triple bonds.
  • the alkyl group may be branched, straight chain or cyclic.
  • Alkenylene group means a functional group consisting of at least two carbon atoms of at least one carbon-carbon double bond
  • alkynylene group means at least two carbon atoms of at least one carbon-carbon triplet. It means a functional group consisting of a bond.
  • the alkyl group may be an alkyl group that is C1 to C20. More specifically, the alkyl group may be a C1 to C10 alkyl group or a C1 to C6 alkyl group.
  • a C1 to C4 alkyl group has 1 to 4 carbon atoms in the alkyl chain, i.e., the alkyl chain is methyl, ethyl, propyl, iso-propyl, n-butyl, iso-butyl, sec-butyl and t-butyl Selected from the group consisting of:
  • the alkyl group is methyl, ethyl, propyl, isopropyl, butyl, isobutyl, t-butyl, pentyl, hexyl, cyclopropyl, cyclobutyl, cyclopentyl, cyclohex It means a practical skill.
  • Aromatic group means a functional group in which all elements of the functional group in the ring form have p-orbitals, and these p-orbitals form conjugation. Specific examples include an aryl group and a heteroaryl group.
  • aryl group includes a monocyclic or fused ring polycyclic (ie, a ring that divides adjacent pairs of carbon atoms) functional groups.
  • Heteroaryl group means containing 1 to 3 hetero atoms selected from the group consisting of N, O, S and P in the aryl group, and the rest are carbon. When the heteroaryl group is a fused ring, each ring may include 1 to 3 heteroatoms.
  • the carbazole derivative refers to a structure in which a nitrogen atom of a substituted or unsubstituted carbazolyl group is substituted with a hetero atom or carbon instead of nitrogen.
  • Specific examples thereof include dibenzofuran (dibenzofuranyl group), dibenzothiophene (dibenzothiophenyl group), fluorene (fluorenyl group) and the like.
  • the hole characteristic means a characteristic that has conductivity characteristics along the HOMO level to facilitate the injection of holes formed at the anode into the light emitting layer and movement in the light emitting layer.
  • an electronic characteristic means the characteristic which has electroconductive characteristic along LUMO level, and facilitates the injection of the electron formed in the cathode into the light emitting layer, and the movement in the light emitting layer.
  • Compound for an organic optoelectronic device is at least one substituted or unsubstituted aryl group in the bifluorene core of the spiro structure; Or a substituted or unsubstituted heteroaryl group.
  • some of the core of the spiro structure may be in the form of a fused ring.
  • the core structure may be used as a light emitting material, a hole injection material or a hole transport material of an organic optoelectronic device. It may be particularly suitable for hole injection materials or hole transport materials.
  • the compound for an organic optoelectronic device may be a compound having various energy band gaps by introducing a variety of other substituents to the substituents substituted in the core portion and the core portion.
  • the hole transport ability or electron transfer ability is enhanced to have an excellent effect in terms of efficiency and driving voltage, and excellent in organic chemical and thermal stability It is possible to improve the life characteristics when driving the device.
  • X is -O-, -S-, -S (O)-or -S (O) 2-
  • Ar 1 and Ar 2 are independently substituted or unsubstituted C6 to C30 aryl Group or a substituted or unsubstituted C2 to C30 heteroaryl group
  • L 1 and L 2 are independently a single bond, a substituted or unsubstituted C2 to C10 alkenylene group, a substituted or unsubstituted C2 to C10 alkynylene group
  • m1 and m2 are independently an integer of 0 or 1 and any one of m1 and m2 is 1, n1 and n2 Is independently an integer of any one of 0 to 3
  • R 1 to R 7 is independently hydrogen, deuterium, substituted or unsubstituted C1 to C
  • X may be -O-, -S-, -S (O)-or -S (O) 2- . Since the -O-, -S-, -S (O)-or -S (O) 2 -has a polar group and can interact with the electrode, the charge can be easily injected.
  • the compound since the compound has steric hindrance, the interaction between molecules is small, so that crystallization can be suppressed. For this reason, the yield which manufactures an element can be improved. In addition, the life characteristics of the manufactured device can be improved.
  • Chemical Formula 1 may be represented by the following Chemical Formula 3.
  • Ar 2 is a substituted or unsubstituted C6 to C30 aryl group or a substituted or unsubstituted C2 to C30 heteroaryl group
  • L 2 is a single bond, a substituted or unsubstituted C2 to C10 alkenylene group, A substituted or unsubstituted C2 to C10 alkynylene group, a substituted or unsubstituted C6 to C30 arylene group, or a substituted or unsubstituted C2 to C30 heteroarylene group
  • m2 is 1, n2 is any one of 0 to 3 Is an integer
  • R 1 to R 3 , R 6 or R 7 are independently hydrogen, deuterium, a substituted or unsubstituted C1 to C10 alkyl group, a substituted or unsubstituted C6 to C30 aryl group, or a substituted or unsubstituted C2 to C30 Heteroaryl group, two * of the
  • the compound for an organic optoelectronic device may be represented by the following formula (4).
  • formula (4) In the case of having the position of the fused ring as shown in the following formula (4), by introducing a spirofluorene group to the 3, 4 positions of dibenzofuran and dibenzothiophene, structural isomers do not occur, thereby increasing the synthesis yield.
  • dibenzofuran and dibenzothiophene have high hole mobility and function as a hole transport group, and spirofluorene can improve thermal stability and electrochemical stability.
  • X is -O-, -S-, -S (O)-or -S (O) 2-
  • Ar 1 and Ar 2 are independently substituted or unsubstituted C6 to C30 aryl group or A substituted or unsubstituted C2 to C30 heteroaryl group
  • L 1 and L 2 are independently a single bond, a substituted or unsubstituted C2 to C10 alkenylene group, a substituted or unsubstituted C2 to C10 alkynylene group, a substituted or Unsubstituted C6 to C30 arylene group or substituted or unsubstituted C2 to C30 heteroarylene group
  • m1 and m2 are independently an integer of 0 or 1 either m1 and m2 is 1, n1 and n2 are independent Is an integer of any one of 0 to 3
  • R 1 to R 7 are independently hydrogen, deuterium, a substituted or unsubstituted C1 to C10 al
  • the compound for an organic optoelectronic device may be represented by the following Formula 5.
  • Ar 2 is a substituted or unsubstituted C6 to C30 aryl group or a substituted or unsubstituted C2 to C30 heteroaryl group
  • L 2 is a single bond, a substituted or unsubstituted C2 to C10 alkenylene group, A substituted or unsubstituted C2 to C10 alkynylene group, a substituted or unsubstituted C6 to C30 arylene group, or a substituted or unsubstituted C2 to C30 heteroarylene group
  • m2 is 1, n2 is any one of 0 to 3 Integer
  • R 1 to R 7 are independently hydrogen, deuterium, a substituted or unsubstituted C1 to C10 alkyl group, a substituted or unsubstituted C6 to C30 aryl group, or a substituted or unsubstituted C2 to C30 heteroaryl group.
  • the L 1 and L 2 By selectively adjusting the L 1 and L 2 to determine the conjugation length of the entire compound, it can be applied to the light emitting layer of the organic photoelectric device as a phosphorescent host by increasing the triplet energy band gap therefrom.
  • L 1 and L 2 are a substituted or unsubstituted phenylene group, a substituted or unsubstituted biphenylene group, a substituted or unsubstituted terphenylene group, a substituted or unsubstituted naphthylene group, a substituted or unsubstituted Anthracenylene group, substituted or unsubstituted phenanthryl group, substituted or unsubstituted pyrenylene group, substituted or unsubstituted fluorenylene group, substituted or unsubstituted triphenylene group and the like.
  • Ar 1 and Ar 2 are independently substituted or unsubstituted imidazolyl group, substituted or unsubstituted triazolyl group, substituted or unsubstituted tetrazolyl group, substituted or unsubstituted carbazolyl group, substituted or unsubstituted Substituted oxadiazolyl group, substituted or unsubstituted oxtriazolyl group, substituted or unsubstituted thiatriazolyl group, substituted or unsubstituted benzimidazolyl group, substituted or unsubstituted benzotriazolyl group, substituted or Unsubstituted pyridinyl group, substituted or unsubstituted pyrimidinyl group, substituted or unsubstituted triazinyl group, substituted or unsubstituted pyrazinyl group, substituted or unsubstituted pyridazinyl group, substituted or
  • Ar 1 and Ar 2 are independently a substituted or unsubstituted phenyl group, a substituted or unsubstituted naphthyl group, a substituted or unsubstituted phenanthrenyl group, a substituted or unsubstituted anthracenyl group, a substituted or unsubstituted fluorenyl group , Substituted or unsubstituted triphenylenyl group, substituted or unsubstituted spiro-fluorenyl group, substituted or unsubstituted terphenyl group, substituted or unsubstituted pyrenyl group, substituted or unsubstituted perrylenyl group, or May be a combination.
  • the molecular weight can be adjusted to facilitate the sublimation purification.
  • Ar 1 and Ar 2 are independently a substituted or unsubstituted phenyl group, a substituted or unsubstituted naphthyl group, a substituted or unsubstituted anthracenyl group, a substituted or unsubstituted phenanthryl group, a substituted or unsubstituted naphthacenyl group , Substituted or unsubstituted pyrenyl group, substituted or unsubstituted biphenylyl group, substituted or unsubstituted p-terphenyl group, substituted or unsubstituted m-terphenyl group, substituted or unsubstituted chrysenyl group, substituted or unsubstituted Substituted triphenylenyl group, substituted or unsubstituted perenyl group, substituted or unsubstituted indenyl group, substituted or unsubstituted furanyl
  • the compound for an organic optoelectronic device due to the substituent is light emitting, hole or electronic properties; Membrane stability; Thermal stability and high triplet excitation energy (T1).
  • the compound for an organic optoelectronic device may be represented by any one of the following Formulas A-1 to A-24, but is not limited thereto.
  • the compound for an organic optoelectronic device may be represented by any one of the following Formulas B-1 to B-257, but is not limited thereto.
  • introducing a functional group having the electronic characteristics is effective for improving the lifespan and driving voltage of the organic light emitting diode.
  • Compound for an organic optoelectronic device has a maximum emission wavelength of about 320 to 500 nm, triplet excitation energy (T1) is 2.0 eV or more, more specifically 2.0 to 4.0 eV range
  • T1 triplet excitation energy
  • the charge of the host having a high triplet excitation energy is well transferred to the dopant, thereby increasing the light emitting efficiency of the dopant and lowering the driving voltage by freely adjusting the HOMO and LUMO energy levels of the material. Because of the advantages it can be very useful as a host material or a charge transport material.
  • nonlinear optical material since the compound for an organic optoelectronic device has photoactive and electrical activity, nonlinear optical material, electrode material, color change material, optical switch, sensor, module, wave guide, organic transistor, laser, light absorber, dielectric and separator It can also be very usefully applied to materials such as (membrane).
  • the compound for an organic optoelectronic device including the compound as described above has a glass transition temperature of 90 ° C. or higher, and a thermal decomposition temperature of 400 ° C. or higher, thereby providing excellent thermal stability. This makes it possible to implement a high efficiency organic photoelectric device.
  • the compound for an organic optoelectronic device including the compound as described above may serve as light emission, electron injection and / or transport, and may also serve as a light emitting host with an appropriate dopant. That is, the compound for an organic optoelectronic device may be used as a host material of phosphorescence or fluorescence, a blue dopant material, or an electron transport material.
  • Compound for an organic optoelectronic device according to an embodiment of the present invention is used in the organic thin film layer to improve the life characteristics, efficiency characteristics, electrochemical stability and thermal stability of the organic optoelectronic device, it is possible to lower the driving voltage.
  • one embodiment of the present invention provides an organic optoelectronic device comprising the compound for an organic optoelectronic device.
  • the organic optoelectronic device refers to an organic photoelectric device, an organic light emitting device, an organic solar cell, an organic transistor, an organic photosensitive drum, an organic memory device, and the like.
  • a compound for an organic optoelectronic device according to an embodiment of the present invention is included in an electrode or an electrode buffer layer to increase quantum efficiency, and in the case of an organic transistor, a gate, a source-drain electrode, or the like may be used as an electrode material. Can be used.
  • Another embodiment of the present invention is an organic light emitting device comprising an anode, a cathode and at least one organic thin film layer interposed between the anode and the cathode, at least any one of the organic thin film layer is an embodiment of the present invention It provides an organic light emitting device comprising a compound for an organic optoelectronic device according to.
  • the organic thin film layer which may include the compound for an organic optoelectronic device may include a layer selected from the group consisting of a light emitting layer, a hole transport layer, a hole injection layer, an electron transport layer, an electron injection layer, a hole blocking layer and a combination thereof. At least one of the layers includes the compound for an organic optoelectronic device according to the present invention.
  • the hole transport layer or the hole injection layer may include a compound for an organic optoelectronic device according to an embodiment of the present invention.
  • the compound for an organic optoelectronic device when included in a light emitting layer, the compound for an organic optoelectronic device may be included as a phosphorescent or fluorescent host, and in particular, may be included as a fluorescent blue dopant material.
  • FIG. 1 to 5 are cross-sectional views of an organic light emitting device including a compound for an organic optoelectronic device according to an embodiment of the present invention.
  • the organic light emitting diodes 100, 200, 300, 400, and 500 according to the embodiment of the present invention are interposed between the anode 120, the cathode 110, and the anode and the cathode. It has a structure including at least one organic thin film layer 105.
  • the anode 120 includes a cathode material, and a material having a large work function is preferable as the anode material so that hole injection can be smoothly injected into the organic thin film layer.
  • the positive electrode material include metals such as nickel, platinum, vanadium, chromium, copper, zinc, and gold or alloys thereof, and include zinc oxide, indium oxide, indium tin oxide (ITO), and indium zinc oxide (IZO).
  • metal oxides such as ZnO and Al, or combinations of metals and oxides such as SnO 2 and Sb, and poly (3-methylthiophene), poly [3,4- (ethylene-1, 2-dioxy) thiophene] (conductive polymers such as polyehtylenedioxythiophene (PEDT), polypyrrole and polyaniline, etc.), but is not limited thereto.
  • a transparent electrode including indium tin oxide (ITO) may be used as the anode.
  • the negative electrode 110 includes a negative electrode material, and the negative electrode material is preferably a material having a small work function to facilitate electron injection into the organic thin film layer.
  • the negative electrode material include metals such as magnesium, calcium, sodium, potassium, titanium, indium, yttrium, lithium, gadolinium, aluminum, silver, tin, lead, cesium, barium, or alloys thereof, and LiF / Al.
  • Multilayer structure materials such as LiO 2 / Al, LiF / Ca, LiF / Al, and BaF 2 / Ca, and the like, but are not limited thereto.
  • a metal electrode such as aluminum may be used as the cathode.
  • FIG. 1 illustrates an organic light emitting device 100 in which only a light emitting layer 130 exists as an organic thin film layer 105.
  • the organic thin film layer 105 may exist only as a light emitting layer 130.
  • FIG. 2 illustrates a two-layered organic light emitting diode 200 including an emission layer 230 and an hole transport layer 140 including an electron transport layer as the organic thin film layer 105, as shown in FIG. 2.
  • the organic thin film layer 105 may be a two-layer type including the light emitting layer 230 and the hole transport layer 140.
  • the light emitting layer 130 functions as an electron transporting layer
  • the hole transporting layer 140 functions to improve bonding and hole transporting properties with a transparent electrode such as ITO.
  • FIG. 3 is a three-layered organic light emitting device 300 having an electron transport layer 150, an emission layer 130, and a hole transport layer 140 as an organic thin film layer 105, and the organic thin film layer 105.
  • the light emitting layer 130 is in an independent form, and has a form in which a film (electron transport layer 150 and hole transport layer 140) having excellent electron transport properties or hole transport properties is stacked in separate layers.
  • FIG. 4 illustrates a four-layered organic light emitting diode 400 in which an electron injection layer 160, an emission layer 130, a hole transport layer 140, and a hole injection layer 170 exist as an organic thin film layer 105.
  • the hole injection layer 170 may improve adhesion to ITO used as an anode.
  • FIG. 5 shows different functions such as the electron injection layer 160, the electron transport layer 150, the light emitting layer 130, the hole transport layer 140, and the hole injection layer 170 as the organic thin film layer 105.
  • the five-layer organic light emitting device 500 having five layers is present, and the organic light emitting device 500 is effective in lowering the voltage by separately forming the electron injection layer 160.
  • the electron transport layer 150, the electron injection layer 160, the light emitting layers 130 and 230, the hole transport layer 140, and the hole injection layer 170 forming the organic thin film layer 105 and their Any one selected from the group consisting of a combination includes the compound for an organic optoelectronic device.
  • the compound for an organic optoelectronic device may be used in the electron transport layer 150 including the electron transport layer 150 or the electron injection layer 160, and the hole blocking layer (not shown) is included in the electron transport layer. It is desirable to provide an organic light emitting device having a simplified structure because it does not need to be formed separately.
  • the compound for an organic optoelectronic device when included in the light emitting layers 130 and 230, the compound for an organic optoelectronic device may be included as a phosphorescent or fluorescent host, or may be included as a fluorescent blue dopant.
  • the above-described organic light emitting device includes a dry film method such as an evaporation, sputtering, plasma plating and ion plating after forming an anode on a substrate;
  • the organic thin film layer may be formed by a wet film method such as spin coating, dipping, flow coating, or the like, followed by forming a cathode thereon.
  • a display device including the organic light emitting diode is provided.
  • the glass substrate coated with ITO Indium tin oxide having a thickness of 1500 ⁇ was washed with distilled water ultrasonic waves. After washing the distilled water, ultrasonic cleaning with a solvent such as isopropyl alcohol, acetone, methanol and the like was dried and then transferred to a plasma cleaner, and then the substrate was cleaned for 5 minutes using an oxygen plasma, and then the substrate was transferred to a vacuum depositor.
  • a solvent such as isopropyl alcohol, acetone, methanol and the like
  • HTM see material structure below
  • HTM was vacuum deposited on the ITO substrate to form a hole injection layer having a thickness of 1200 ⁇ .
  • Example 1 The material synthesized in Example 1 was used as a host on the hole injection layer, and a phosphorescent green dopant was doped with PhGD (see the figure below) at 7% by weight to form a light emitting layer having a thickness of 300 Pa by vacuum deposition.
  • PhGD phosphorescent green dopant
  • BAlq (Bis (2-methyl-8-quinolinolato-N1, O8)-(1,1'-Biphenyl-4-olato) aluminum] 50um and Alq3 [Tris (8-hydroxyquinolinato) aluminium] 250 ⁇ Laminated sequentially to form an electron transport layer.
  • An organic light emitting device was manufactured by sequentially depositing LiF 5 ′ and Al 1000 ′ on the electron transport layer to form a cathode.
  • An organic light emitting diode was manufactured according to the same method as Example 7 except for using the compound prepared in Example 2 (A-6) instead of using the compound prepared in Example 1.
  • An organic light emitting diode was manufactured according to the same method as Example 7 except for using the compound prepared in Example 3 (A-8) instead of using the compound prepared in Example 1.
  • An organic light emitting diode was manufactured according to the same method as Example 7 except for using the compound prepared in Example 4 (A-11) instead of using the compound prepared in Example 1.
  • An organic light emitting diode was manufactured according to the same method as Example 7 except for using the compound prepared in Example 5 (B-123), instead of using the compound prepared in Example 1.
  • An organic light emitting diode was manufactured according to the same method as Example 7 except for using the compound prepared in Example 6 (B-127) instead of using the compound prepared in Example 1.
  • An organic light emitting diode was manufactured according to the same method as Example 4 except for using Compound C1 as a host instead of Example 1 (A-6).
  • the current value flowing through the unit device was measured using a current-voltmeter (Keithley 2400) while increasing the voltage from 0V to 10V, and the measured current value was divided by the area to obtain a result.
  • the resulting organic light emitting device was measured using a luminance meter (Minolta Cs-1000A) while increasing the voltage from 0V to 10V to obtain a result.
  • the current efficiency (cd / A) and power efficiency (lm / W) of the same brightness (3,000 cd / m 2 ) were calculated using the brightness, current density, and voltage measured from (1) and (2) above.
  • Table 1 summarizes the device evaluation results.
  • Example 1 Classification Host Vd Cd / A lm / W cd / m 2 CIEx CIEy Comparative Example 1 C1 6.90 49.53 22.54 3000 0.333 0.623
  • Example 7 A-1 5.45 54.3 31.3 3000 0.356 0.613
  • Example 8 A-6 5.48 54.1 31 3000 0.348 0.608
  • Example 9 A-8 5.65 55.6 30.9 3000 0.345 0.611
  • Example 10 A-11 5.38 55.8 32.6 3000 0.359 0.615
  • Example 11 B-123 5.90 52.9 28.2 3000 0.354 0.607
  • Example 12 B-127 5.95 52.5 27.7 3000 0.362 0.609

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