WO2011049325A2 - Novel compound for organic photoelectric device and organic photoelectric device including the same - Google Patents

Novel compound for organic photoelectric device and organic photoelectric device including the same Download PDF

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WO2011049325A2
WO2011049325A2 PCT/KR2010/007054 KR2010007054W WO2011049325A2 WO 2011049325 A2 WO2011049325 A2 WO 2011049325A2 KR 2010007054 W KR2010007054 W KR 2010007054W WO 2011049325 A2 WO2011049325 A2 WO 2011049325A2
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chemical formula
substituted
unsubstituted
group
photoelectric device
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PCT/KR2010/007054
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WO2011049325A4 (en
WO2011049325A3 (en
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Young-Hoon Kim
Eun-Sun Yu
Ho-Jae Lee
Young-Sung Park
Mi-Young Chae
Hyung-Sun Kim
Soo-Hyun Min
Eui-Su Kang
Sung-Hyun Jung
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Cheil Industries Inc.
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Publication of WO2011049325A3 publication Critical patent/WO2011049325A3/en
Publication of WO2011049325A4 publication Critical patent/WO2011049325A4/en
Priority to US13/451,753 priority Critical patent/US8530063B2/en

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    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
    • H10K85/60—Organic compounds having low molecular weight
    • H10K85/649—Aromatic compounds comprising a hetero atom
    • H10K85/657—Polycyclic condensed heteroaromatic hydrocarbons
    • H10K85/6572—Polycyclic condensed heteroaromatic hydrocarbons comprising only nitrogen in the heteroaromatic polycondensed ring system, e.g. phenanthroline or carbazole
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
    • C09K11/06—Luminescent, e.g. electroluminescent, chemiluminescent materials containing organic luminescent materials
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B57/00—Other synthetic dyes of known constitution
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B33/00—Electroluminescent light sources
    • H05B33/12—Light sources with substantially two-dimensional radiating surfaces
    • H05B33/14—Light sources with substantially two-dimensional radiating surfaces characterised by the chemical or physical composition or the arrangement of the electroluminescent material, or by the simultaneous addition of the electroluminescent material in or onto the light source
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00—Organic light-emitting devices
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K2211/00—Chemical nature of organic luminescent or tenebrescent compounds
    • C09K2211/10—Non-macromolecular compounds
    • C09K2211/1018—Heterocyclic compounds
    • C09K2211/1025—Heterocyclic compounds characterised by ligands
    • C09K2211/1029—Heterocyclic compounds characterised by ligands containing one nitrogen atom as the heteroatom
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K2211/00—Chemical nature of organic luminescent or tenebrescent compounds
    • C09K2211/10—Non-macromolecular compounds
    • C09K2211/1018—Heterocyclic compounds
    • C09K2211/1025—Heterocyclic compounds characterised by ligands
    • C09K2211/1059—Heterocyclic compounds characterised by ligands containing three nitrogen atoms as heteroatoms
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00—Organic light-emitting devices
    • H10K50/10—OLEDs or polymer light-emitting diodes [PLED]
    • H10K50/11—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy
    • Y02E10/549—Organic PV cells

Definitions

  • This disclosure relates to a novel compound for an organic photoelectric device having improved life-span, efficiency, electrochemical stability, and thermal stability, and an organic photoelectric device including the same.
  • An organic photoelectric device is a device requiring a charge exchangebetween an electrode and an organic material by using aole or an electron.
  • An organic photoelectric device may be classified as follows in accordance with its driving principles.
  • a first organic photoelectric device is an electron device that is driven as follows: excitons are generated in an organic material layer by photons from an external light source; the excitons are separated to electrons and holes and the electrons and holes are transferred to different electrodes as a current source (voltage source).
  • a second organic photoelectric device is an electron device driven as follows: a voltage or a current is applied to at least two electrodes to inject holes and/or electrons into an organic material semiconductor positioned at an interface of the electrodes and then the device is driven by the injected electrons and holes.
  • the organic photoelectric device includes an organic light emitting diode (OLED), an organic solar cell, an organic photo-conductoran organic transistor, an organic memory device, etc., and it requires a hole injecting or transporting material, an electron injecting or transporting material, or a light emitting material.
  • OLED organic light emitting diode
  • OLED organic light emitting diode
  • organic solar cell organic solar cell
  • organic photo-conductoran organic transistor organic photo-conductoran organic transistor
  • organic memory device etc.
  • organic light emitting diode has recently drawn attention due to an increase in demand for flat panel displays.
  • organic light emission refers to transformation of electrical energy to photo-energy.
  • the organic light emitting diode transforms electrical energy into light by applying current to an organic light emitting material. It has a structure in which a functional organic material layer is interposed between an anode and a cathode.
  • the organic material layer includes multi-layers including different materials fromeach other, for example a hole injection layer (HIL), a hole transport layer (HTL), an emission layer, an electron transport layer (ETL), and an electron injection layer (EIL),in order to improve efficiency and stability of an organic light emitting diode.
  • HIL hole injection layer
  • HTL hole transport layer
  • ETL electron transport layer
  • EIL electron injection layer
  • an organic light emitting diode when a voltage is applied between an anode and a cathode, holes from the anode and electrons from the cathode are injected to an organic material layer.
  • the generated excitons generate light having certain wavelengths while shifting to a ground state.
  • the organic layer has a structure in which a thin film (hole transport layer (HTL)) of a diamine derivative and a thin film of tris(8-hydroxy-quinolate)aluminum (Alq 3 ) are stacked.
  • HTL hole transport layer
  • aphosphorescent light emitting material can be used for a light emitting material of an organic light emitting diode in addition to the fluorescent light emitting material (D. F. O'Brien et al., Applied Physics Letters, 74 3, 442-444, 1999; M. A. Baldo et al., Applied Physics letters, 75 1, 4-6, 1999).
  • a phosphorescent material emits light by transiting the electrons from a ground state to an exited state, non-radiance transiting of a singlet exciton to a triplet exciton through intersystem crossing, and transiting a triplet exciton to a ground state to emit light.
  • an organic material layer includes a light emitting material and a charge transport material, for example a hole injection material, a hole transport material, an electron transport material, an electron injection material, and so on.
  • the light emitting material is classified as blue, green, and red light emitting materials according to emittedcolors, and yellow and orange light emitting materials to emit colors approaching natural colors.
  • a maximum light emitting wavelength is shifted to a long wavelength or color purity decreases because of interactions between molecules, or device efficiency decreases because of a light emitting quenching effect. Therefore, a host/dopant system is included as a light emitting material in order to improve color purity and increase luminous efficiency and stability through energy transfer.
  • a material constituting an organic material layer for example a hole injection material, a hole transport material, a light emitting material, an electron transport material, an electron injection material, and a light emitting material such as a host and/or a dopant should be stable and have good efficiency.
  • a hole injection material, a hole transport material, a light emitting material, an electron transport material, an electron injection material, and a light emitting material such as a host and/or a dopant
  • development of an organic material layer forming material for an organic light emitting diode has not been satisfactory up to now and thus there is aneed for a novel material. This material development is also required for other organic photoelectric devices.
  • a compound for an organic photoelectric device that can act as a light emitting or electron injection and/or transport material, and also as a light emitting host along with an appropriate dopant, is provided.
  • An organic photoelectric device having excellent life-span, efficiency, driving voltage, electrochemical stability, and thermal stability is provided.
  • a compound for an organic photoelectric device represented by the following Chemical Formula 1 is provided.
  • Ar 1 and Ar 2 are independently a substituted or unsubstituted C6 to C30 arylene group
  • Ar 3 is selected from the group consisting of a substituted or unsubstituted C6 to C30 aryl group, a substituted or unsubstituted C5 to C30 heteroaryl group, and a substituted or unsubstituted C1 to C30 alkyl group
  • a 1 to A 22 are independently selected from the group consisting of hydrogen, a substituted or unsubstituted C6 to C30 aryl group, a substituted or unsubstituted C5 to C30 heteroaryl group, and a substituted or unsubstituted C1 to C30 alkyl group.
  • the compound for an organic photoelectric device may be represented by the following Chemical Formula 2.
  • Ar 3 is selected from the group consisting of a substituted or unsubstituted C6 to C30 aryl group, a substituted or unsubstituted C5 to C30 heteroaryl group, and a substituted or unsubstituted C1 to C30 alkyl group
  • a 1 to A 22 are independently selected from the group consisting of hydrogen, a substituted or unsubstituted C6 to C30 aryl group, a substituted or unsubstituted C5 to C30 heteroaryl group, and a substituted or unsubstituted C1 to C30 alkyl group.
  • At least one substituent selected from the group consisting of A 1 , A 3 , A 7 , A 9 , A 12 , A 14 , A 15 , A 17 , A 20 , and A 22 is independently selected from the group consisting of a substituted or unsubstituted C6 to C30 aryl group, a substituted or unsubstituted C5 to C30 heteroaryl group, and a substituted or unsubstituted C1 to C30 alkyl group.
  • At least one substituent selected from the group consisting of A 1 , A 3 , A 7 , A 9 , A 12 , A 14 , A 15 , A 17 , A 20 , and A 22 is independently selected from the group consisting of a substituted or unsubstituted C6 to C12 aryl group, a substituted or unsubstituted C5 to C12 heteroaryl group, and a substituted or unsubstituted C1 to C4 alkyl group.
  • Ar 3 is a substituted or unsubstituted C6 to C25 aryl group or a substituted or unsubstituted C5 to C20 heteroaryl group.
  • Ar 3 may be selected from the group consisting of the following Chemical Formulae 3 to 10.
  • an organic photoelectric device that includes an anode, a cathode, and at least one organic thin layer disposed between the anode and cathode. At least one organic thin layer includes the compound for the organic photoelectric device.
  • the organic thin layer may be selected from the group consisting of an emission layer, a hole transport layer (HTL), a hole injection layer (HIL), anelectron transport layer (ETL), an electron injection layer (EIL), a hole blocking layer, and a combination thereof.
  • HTL hole transport layer
  • HIL hole injection layer
  • ETL electron transport layer
  • EIL electron injection layer
  • the compound for an organic photoelectric device may be included in an electron transport layer (ETL) or an electron injection layer (EIL).
  • ETL electron transport layer
  • EIL electron injection layer
  • the compound for an organic photoelectric device may be included in an emission layer.
  • the compound for an organic photoelectric device may be used as a phosphorescent or fluorescent host material in an emission layer.
  • the compound for an organic photoelectric device may be used as a fluorescent blue dopant material in an emission layer.
  • the organic photoelectric device is selected from the group consisting of an organic light emitting diode, an organic solar cell, an organic transistor, an organic photo-conductor drum, an organic memory device, and the like.
  • a display device including the organic photoelectric device is provided.
  • the compound has excellent electrochemical and thermal stability, and can provide an organic photoelectric device having excellent life-span, and high luminous efficiency at a low driving voltage.
  • FIGS. 1 to 5 are cross-sectional views showing organic light emitting diodes including compounds according to various embodiments of the present invention.
  • organic photoelectric device 110 cathode
  • HTL hole transport layer
  • ETL electron transport layer
  • EIL electron injection layer
  • HIL hole injection layer
  • substituted refers to one substituted with at least a substituent selected from the group consisting of a C1 to C30 alkyl group, a C1 to C10 alkylsilyl group, a C3 to C30 cycloalkyl group, a C6 to C30 aryl group, a C1 to C10 alkoxy group, a fluoro, a C1 to 10 trifluoroalkyl group such as trifluoromethyl and the like, or a cyano group.
  • hetero refers to one including 1 to 3 of N, O, S, or P, and remaining carbons in one ring.
  • the term “combination thereof” refers to at least two substituents bound to each other by a linker, or at least two substituents condensed to each other.
  • alkyl refers to an aliphatic hydrocarbon group.
  • the alkyl may be a saturated alkyl group that does not include any alkene or alkyne.
  • the alkyl may be an unsaturated alkyl group that includes at least one alkene or alkyne.
  • alkene refers to a group in which at least two carbon atoms are bound in at least one carbon-carbon double bond; and the term “alkyne” refers to a group in which at least two carbon atoms are bound in at least one carbon-carbon triple bond.
  • the alkyl may be branched, linear, or cyclic.
  • the alkyl group may have 1 to 20 carbon atoms.
  • the alkyl group may be a medium-sized alkyl having 1 to 10 carbon atoms.
  • the alkyl group may be a lower alkyl having 1 to 6 carbon atoms.
  • a C1-C4 alkyl may have 1 to 4 carbon atoms and may be selected from the group consisting of methyl, ethyl, propyl, iso-propyl, n-butyl, iso-butyl, sec-butyl, and t-butyl.
  • the representative examples of an alkyl group may be selected from the group consisting of methyl, ethyl, propyl, isopropyl, butyl, isobutyl, t-butyl, pentyl, hexyl, ethenyl, propenyl, butenyl, cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, or the like, which may be individually and independently substituted.
  • heteroaryl refers to an aryl group including a heterocyclic aryl (e.g., pyridine) having at least one ring having a covalent pi electron system.
  • heterocyclic aryl e.g., pyridine
  • the term also refers to monocyclic or fusion ring polycyclic (i.e., groups sharing adjacent pairs of carbon atoms) groups.
  • spiro compound having a contact point of one carbon.
  • the compound for an organic photoelectric device has a structure in which two carbazoles are directly or indirectly bound to a core of another carbazole in the center of the core of the carbazole.
  • the compound for an organic photoelectric device may a synthesis of a compound having various energy band gaps by introducing various substituents into the core of a carbazole and two carbazoles bound to the core of the carbazole, so itmay be applied for compounds satisfying conditions required for the emission layer as well as the electron injection layer (EIL) and transport layer.
  • EIL electron injection layer
  • the organic photoelectric device includes the compound having the appropriate energy level dependingupon the substituents, the electron transporting property is enforced to provide excellent efficiency and driving voltage, and the electrochemical and thermal stability are improved to enhance the life-span characteristic while driving the organic photoelectric device.
  • a compound for an organic photoelectric device represented by the following Chemical Formula 1 is provided.
  • Ar 1 and Ar 2 are independently a substituted or unsubstituted C6 to C30 arylene group.
  • Ar 1 and Ar 2 may independently be a substituted or unsubstituted phenylene group, or a continuously bound of a substituted or unsubstituted phenylene group.
  • Ar 1 and Ar 2 may not be present, and two carbazoles may be directly bound to a core of carbazole.
  • An example is as in the following Chemical Formula 2.
  • the light emitting may be controlled in the visible region by adjusting the ⁇ -conjugation length of Ar 1 and Ar 2 .
  • the compound may be usefully applied to the emission layer of an organic photoelectric device.
  • the carbon number is more than 30, it is impossible to obtain sufficient effects for the device.
  • Ar 3 is selected from the group consisting of a substituted or unsubstituted C6 to C30 aryl group, a substituted or unsubstituted C5 to C30 heteroaryl group, and a substituted or unsubstituted C1 to C30 alkyl group.
  • the carbazole core structure that is bound with the substituent has improved thermal stability or oxidation resistance, it may improve the life-span characteristic of an organic photoelectric device.
  • Ar 3 is a substituted or unsubstituted C6 to C25 aryl group or a substituted or unsubstituted C5 to C20 heteroaryl group.
  • Non-limiting examples of Ar 3 include the following Chemical Formulae 3 to 10.
  • * refers to a position at which a substituent is bound.
  • a 1 to A 22 are independently selected from the group consisting of hydrogen, a substituted or unsubstituted C6 to C30 aryl group, a substituted or unsubstituted C5 to C30 heteroaryl group, and a substituted or unsubstituted C1 to C30 alkyl group.
  • the tri-carbazole structure that is bound with the substituent has excellent light emitting characteristics and mobility of electrons/holes.
  • At least one substituent selected from the group consisting of A 1 , A 3 , A 7 , A 9 , A 12 , A 14 , A 15 , A 17 , A 20 , and A 22 is independently selected from the group consisting of a substituted or unsubstituted C6 to C30 aryl group, a substituted or unsubstituted C5 to C30 heteroaryl group, and a substituted or unsubstituted C1 to C30 alkyl group.
  • At least one substituent selected from the group consisting of A 1 , A 3 , A 7 , A 9 , A 12 , A 14 , A 15 , A 17 , A 20 , and A 22 is independently selected from the group consisting of a substituted or unsubstituted C6 to C12 aryl group, a substituted or unsubstituted C5 to C12 heteroaryl group, and a substituted or unsubstituted C1 to C4 alkyl group.
  • the molecular weight is small, so it may provide merits in that a sublimation/refinement process may be performed at a relatively low temperature.
  • the compound for an organic photoelectric device may be represented by the following Chemical Formula 11 to Chemical Formula 81.
  • the present invention is not limited to the following compounds.
  • the compound for an organic photoelectric device including the above compound has a glass transition temperature of 120°C or higher and a thermal decomposition temperature of 400°C or higher, so as to improve thermal stability. Thereby, it is possible to produce an organic photoelectric device having a high efficiency.
  • the compound for an organic photoelectric device including the above compound may play a role for emitting light or injecting and/or transporting electrons, and it may act as a light emitting host together with a suitable dopant.
  • the compound for an organic photoelectric device may be used as a phosphorescent or fluorescent host material, a blue light emitting dopant material, or an electron transporting material.
  • the compound for an organic photoelectric device according to one embodiment is used for an organic thin layer, it may improve the life-span characteristic, efficiency characteristic, electrochemical stability, and thermal stability of an organic photoelectric device and decrease the driving voltage.
  • an organic photoelectric device that includes the compound for an organic photoelectric device.
  • the organic photoelectric device may include an organic luminescentc device, an organic solar cell, an organic transistor, an organic photosensitive drum, an organic memory device, or the like.
  • the compound for an organic photoelectric device according to one embodiment may beincluded in an electrode or an electrode buffer layer in the organic solar cell to improve the quantum efficiency, and it may be used as an electrode material for a gate, a source-drain electrode, or the like in the organic transistor.
  • the organic photoelectric device includes an anode, a cathode, and at least one organic thin layer interposed between the anode and the cathode, wherein the at least one organic thin layer may provide an organic photoelectric device including the compound for an organic photoelectric device according to one embodiment.
  • the organic thin layer that may include the compound for an organic photoelectric device may include a layer selected from the group consisting of an emission layer, a hole transport layer (HTL), a hole injection layer (HIL), an electron transport layer (ETL), an electron injection layer (EIL), a hole blocking film, and a combination thereof.
  • the at least one layer includes the compound for an organic photoelectric device according to one embodiment.
  • the electron transport layer (ETL) or the electron injection layer (EIL) may include the compound for an organic photoelectric device according to one embodiment.
  • the compound for an organic photoelectric device when included in the emission layer, the compound for an organic photoelectric device may be included as a phosphorescent or fluorescent host, and particularly, as a fluorescent blue dopant material.
  • FIGS. 1 to 5 are cross-sectional views showing an organic photoelectric device including the compound for an organic photoelectric device according to one embodiment of the present invention.
  • organic photoelectric devices 100, 200, 300, 400, and 500 include at least one organic thin layer 105 interposed between an anode 120 and a cathode 110.
  • the anode 120 includes an anode material laving a large work function to help hole injection into an organic thin layer.
  • the anode material includes: a metal such as nickel, platinum, vanadium, chromium, copper, zinc, and gold, or alloys thereof a metal oxide such as zinc oxide, indium oxide, indium tin oxide (ITO), and indium zinc oxide (IZO); a combined metal and oxide such as ZnO:Al or SnO 2 :Sb; or a conductive polymer such as poly(3-methylthiophene), poly[3,4-(ethylene-1,2-dioxy)thiophene] (PEDT), polypyrrole, and polyaniline, but is not limited thereto. It is preferable to include a transparent electrode including indium tin oxide (ITO) as an anode.
  • ITO indium tin oxide
  • the cathode 110 includes a cathode material having a small work function to help electron injection into an organic thin layer.
  • the cathode material includes: a metal such as magnesium, calcium, sodium, potassium, titanium, indium, yttrium, lithium, gadolinium, aluminum, silver, tin, and lead, or alloys thereof or a multi-layered material such as LiF/Al, Liq/Al, LiO 2 /Al, LiF/Ca, LiF/Al, and BaF 2 /Ca, but is not limited thereto. It is preferable to include a metal electrode including aluminum as a cathode.
  • the organic photoelectric device 100 includes an organic thin layer 105 including only an emission layer 130.
  • a double-layered organic photoelectric device 200 includes an organic thin layer 105 including an emission layer 230 including an electron transport layer (ETL), and a hole transport layer (HTL) 140.
  • the emission layer 130 also functions as an electron transport layer (ETL), and the hole transport layer (HTL) 140 layer has an excellent binding property with a transparent electrode such as ITO or an excellent hole transporting property.
  • a three-layered organic photoelectric device 300 includes anorganic thin layer 105 including an electron transport layer (ETL) 150, an emission layer 130, and a hole transport layer (HTL) 140.
  • the emission layer 130 is independently installed, and layers having an excellent electron transporting property or an excellent hole transporting property are separately stacked.
  • a four-layered organic photoelectric device 400 includes an organic thin layer 105 including an electron injection layer (EIL) 160, an emission layer 130, a hole transport layer (HTL) 140, and a hole injection layer (HIL) 170 for binding with the cathode of ITO.
  • EIL electron injection layer
  • HTL hole transport layer
  • HIL hole injection layer
  • a five layered organic photoelectric device 500 includes an organic thin layer 105 including an electron transport layer (ETL) 150, an emission layer 130, a hole transport layer (HTL) 140, and a hole injection layer (HIL) 170, and further includes an electron injection layer (EIL) 160 to achieve a low voltage.
  • ETL electron transport layer
  • HTL hole transport layer
  • HIL hole injection layer
  • EIL electron injection layer
  • the organic thin layer 105 including at least one selected from the group consisting of an electron transport layer (ETL) 150, an electron injection layer (EIL) 160, an emission layer 130 and 230, a hole transport layer (HTL)140, a hole injection layer (HIL) 170, and combinations thereof includes a compound for an organic photoelectric device.
  • the material for the organic photoelectric device may be used for an electron transport layer (ETL) 150including the electron transport layer (ETL) 150 or electron injection layer (EIL) 160.
  • ETL electron transport layer
  • EIL electron injection layer
  • the material for the organic photoelectric device may be included as a phosphorescent or fluorescent host or a fluorescent blue dopant.
  • the organic photoelectric device may be fabricated by: forming an anode on a substrate; forming an organic thin layer in accordance with a dry coating method such as evaporation, sputtering, plasma plating, and ion plating or a wet coating method such as spin coating, dipping, and flow coating and providing a cathode thereon.
  • a dry coating method such as evaporation, sputtering, plasma plating, and ion plating
  • a wet coating method such as spin coating, dipping, and flow coating and providing a cathode thereon.
  • Another embodiment of the present invention provides a display device including the organic photoelectric deviceaccording to the above embodiment.
  • reaction fluid was separated into two layers, and then the organic layer was washed with a saturated sodium chloride aqueous solution and dried with anhydrous sodium sulfate.
  • An organic photoelectric device was fabricated by using a host of the compound represented by Chemical Formula 11 obtained from Example 2 as a host, and a dopant of Ir(PPy) 3 .
  • the anode was ITO having a thickness of 1000 ⁇ and the cathode was aluminum (Al) having a thickness of 1000 ⁇ .
  • the organic emission layer has a 5-layered structure.
  • ITO/DNTPD 60nm
  • NPB 30nm
  • EML 10%, 30nm
  • Alq 3 20nm
  • LiF/Al 100nm
  • the organic photoelectric device was fabricated by cutting an ITO glass substrate having a sheet resistance of 15 ⁇ /cm2 to a size of 50mm 50mm 0.7mm, ultrasonic wave cleaning the same in acetone, isopropyl alcohol, and pure water for 15 minutes for each, and UV ozone cleaning the same to provide an anode.
  • DNTPD and NPD were deposited on the upper surface of the substrate under the conditions of a vacuum degree of 650 10 -7 Pa and a deposition speed of 0.1 to 0.3 nm/s to provide a hole transport layer (HTL) having a thickness of 900 .
  • HTL hole transport layer
  • a 300 -thick emission layer was prepared by using the compound represented by Chemical Formula 11 under the same vacuum deposition conditions, and a phosphorescence dopant of Ir(PPy) 3 was simultaneously deposited.
  • An organic photoelectric device having a structure of ITO/DNTPD (60nm)/NPB (30nm)/CBP (10%, 30nm)/Alq 3 (20nm)/LiF/Al (100nm) was fabricated in accordance with the same procedure as in Example 6, except that 4,4-N,N-dicarbazolebiphenyl (CBP) was used instead of the compound represented by Chemical Formula 11.
  • CBP 4,4-N,N-dicarbazolebiphenyl
  • Each of the obtained organic photoelectric devices was measured for luminance change, current density change depending upon voltage, and luminous efficiency.
  • the specific method was as follows.
  • the obtained organic photoelectric device was measured for current value flowing in the unit device while increasing the voltage from 0V to 10V using a current-voltage meter(Keithley 2400), and the measured current value was divided by area to provide the result.
  • the obtained organic photoelectric device was measured for luminance using a luminance meter (Minolta Cs-1000A) while increasing the voltage from 0V to 10V.
  • the luminous efficiency was calculated by using luminance and current density from 1) and 2), and voltage
  • Example 7 Example 8 Turn-on voltage(1 cd/m 2 ) 2.6 V 2.8 V 2.6 V 4.4 V Operating voltage(1000 cd/m 2 ) 5.6 V 7.0 V 4.5 V 7.8 V Efficiency(1000 cd/m 2 ) 35.80 cd/A20.08 lm/W 17.59 cd/A7.90 lm/W 37.76 cd/A25.79 lm/W 23.70 cd/A9.54 lm/W Efficiency(Maximum) 36.86 cd/A37.46 lm/W 38.76 cd/A46.31 lm/W 38.07 cd/A44.33 lm/W 30.49 cd/A17.81 lm/W CIE (x,y)(1000 cd/m 2 ) 0.30 and 0.61 0.29 and 0.61 0.31 and 0.61 0.29 and 0.61
  • Example 7 had a driving voltage of 4.5 or less at aluminance of 1000 nit and had a higher device level than the comparative example including CBP.
  • Example 7 had a lower driving voltage than the comparative example, it had superior power efficiency with regard to the comparative example.
  • Example 6 showed the maximum electric power efficiency of 46.31lm/w in which power efficiency was 123% of that of the comparative example.
  • Examples 6, 7, and 8 showed solubility in toluene of about 5wt%, which means that they may be applied for developing a future organic electric field light emitting element by a solution process.
  • the material mentioned in the present invention showed a low driving voltage and high luminous efficiency in the results of analyzing an organic photoelectric device, and the life-span of the device was enhanced in a device driving test, but this is not described in this specification.

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Abstract

A novel compound for an organic photoelectric device and an organic photoelectric device including the same are provided. The compound for an organic photoelectric device is rep resented by the Chemical Formula 1. The compound for an organic photoelectric device can provide an organic photoelectric device having excellent thermal/electrochemical stability and life-span efficiency.

Description

NOVEL COMPOUND FOR ORGANIC PHOTOELECTRIC DEVICE AND ORGANIC PHOTOELECTRIC DEVICE INCLUDING THE SAME
This disclosure relates to a novel compound for an organic photoelectric device having improved life-span, efficiency, electrochemical stability, and thermal stability, and an organic photoelectric device including the same.
An organic photoelectric device is a device requiring a charge exchangebetween an electrode and an organic material by using aole or an electron.
An organic photoelectric device may be classified as follows in accordance with its driving principles. A first organic photoelectric device is an electron device that is driven as follows: excitons are generated in an organic material layer by photons from an external light source; the excitons are separated to electrons and holes and the electrons and holes are transferred to different electrodes as a current source (voltage source).
A second organic photoelectric device is an electron device driven as follows: a voltage or a current is applied to at least two electrodes to inject holes and/or electrons into an organic material semiconductor positioned at an interface of the electrodes and then the device is driven by the injected electrons and holes.
As examples, the organic photoelectric device includes an organic light emitting diode (OLED), an organic solar cell, an organic photo-conductoran organic transistor, an organic memory device, etc., and it requires a hole injecting or transporting material, an electron injecting or transporting material, or a light emitting material.
An organic light emitting diode (OLED) has recently drawn attention due to an increase in demand for flat panel displays. In general, organic light emission refers to transformation of electrical energy to photo-energy.
The organic light emitting diode transforms electrical energy into light by applying current to an organic light emitting material. It has a structure in which a functional organic material layer is interposed between an anode and a cathode. The organic material layer includes multi-layers including different materials fromeach other, for example a hole injection layer (HIL), a hole transport layer (HTL), an emission layer, an electron transport layer (ETL), and an electron injection layer (EIL),in order to improve efficiency and stability of an organic light emitting diode.
In such an organic light emitting diode, when a voltage is applied between an anode and a cathode, holes from the anode and electrons from the cathode are injected to an organic material layer. The generated excitons generate light having certain wavelengths while shifting to a ground state.
In 1987, Eastman Kodak, Inc. firstly developed an organic light emitting diode including a low molecular aromatic diamine and an aluminum complex as an emission-layer-forming material (Applied Physics Letters. 51, 913, 1987). C.W Tang et al. firstly disclosed a practicable device as an organic light emitting diode in 1987 (Applied Physics Letters, 51 12, 913-915, 1987).
According to the reference, the organic layer has a structure in which a thin film (hole transport layer (HTL)) of a diamine derivative and a thin film of tris(8-hydroxy-quinolate)aluminum (Alq3) are stacked.
Recently, it is has become known that aphosphorescent light emitting material can be used for a light emitting material of an organic light emitting diode in addition to the fluorescent light emitting material (D. F. O'Brien et al., Applied Physics Letters, 74 3, 442-444, 1999; M. A. Baldo et al., Applied Physics letters, 75 1, 4-6, 1999). Such a phosphorescent material emits light by transiting the electrons from a ground state to an exited state, non-radiance transiting of a singlet exciton to a triplet exciton through intersystem crossing, and transiting a triplet exciton to a ground state to emit light.
As described above, in an organic light emitting diode, an organic material layer includes a light emitting material and a charge transport material, for example a hole injection material, a hole transport material, an electron transport material, an electron injection material, and so on.
The light emitting material is classified as blue, green, and red light emitting materials according to emittedcolors, and yellow and orange light emitting materials to emit colors approaching natural colors.
When one material is used as a light emitting material, a maximum light emitting wavelength is shifted to a long wavelength or color purity decreases because of interactions between molecules, or device efficiency decreases because of a light emitting quenching effect. Therefore, a host/dopant system is included as a light emitting material in order to improve color purity and increase luminous efficiency and stability through energy transfer.
In order to implement the above excellent performance of an organic light emitting diode, a material constituting an organic material layer, for example a hole injection material, a hole transport material, a light emitting material, an electron transport material, an electron injection material, and a light emitting material such as a host and/or a dopant should be stable and have good efficiency. However, development of an organic material layer forming material for an organic light emitting diode has not been satisfactory up to now and thus there is aneed for a novel material. This material development is also required for other organic photoelectric devices.
A compound for an organic photoelectric device that can act as a light emitting or electron injection and/or transport material, and also as a light emitting host along with an appropriate dopant, is provided.
An organic photoelectric device having excellent life-span, efficiency, driving voltage, electrochemical stability, and thermal stability is provided.
According to one aspect of the present invention, a compound for an organic photoelectric device represented by the following Chemical Formula 1 is provided.
[Chemical Formula 1]
Figure PCTKR2010007054-appb-I000001
In the above Chemical Formula, Ar1 and Ar2 are independently a substituted or unsubstituted C6 to C30 arylene group, Ar3 is selected from the group consisting of a substituted or unsubstituted C6 to C30 aryl group, a substituted or unsubstituted C5 to C30 heteroaryl group, and a substituted or unsubstituted C1 to C30 alkyl group,　and A1 to A22 are independently selected from the group consisting of hydrogen, a substituted or unsubstituted C6 to C30 aryl group, a substituted or unsubstituted C5 to C30 heteroaryl group, and a substituted or unsubstituted C1 to C30 alkyl group.
The compound for an organic photoelectric device may be represented by the following Chemical Formula 2.
[Chemical Formula 2]
Figure PCTKR2010007054-appb-I000002
In the above Chemical Formula, Ar3 is selected from the group consisting of a substituted or unsubstituted C6 to C30 aryl group, a substituted or unsubstituted C5 to C30 heteroaryl group, and a substituted or unsubstituted C1 to C30 alkyl group,　and A1 to A22 are independently selected from the group consisting of hydrogen, a substituted or unsubstituted C6 to C30 aryl group, a substituted or unsubstituted C5 to C30 heteroaryl group, and a substituted or unsubstituted C1 to C30 alkyl group.
At least one substituent selected from the group consisting of A1, A3, A7, A9, A12, A14, A15, A17, A20, and A22 is independently selected from the group consisting of a substituted or unsubstituted C6 to C30 aryl group, a substituted or unsubstituted C5 to C30 heteroaryl group, and a substituted or unsubstituted C1 to C30 alkyl group.
At least one substituent selected from the group consisting of A1, A3, A7, A9, A12, A14, A15, A17, A20, and A22 is independently selected from the group consisting of a substituted or unsubstituted C6 to C12 aryl group, a substituted or unsubstituted C5 to C12 heteroaryl group, and a substituted or unsubstituted C1 to C4 alkyl group.
Ar3 is a substituted or unsubstituted C6 to C25 aryl group or a substituted or unsubstituted C5 to C20 heteroaryl group.
Ar3 may be selected from the group consisting of the following Chemical Formulae 3 to 10.
[Chemical Formula 3] [Chemical Formula 4] [Chemical Formula 5]
Figure PCTKR2010007054-appb-I000003
Figure PCTKR2010007054-appb-I000004
Figure PCTKR2010007054-appb-I000005
[Chemical Formula 6] [Chemical Formula 7] [Chemical Formula 8]
Figure PCTKR2010007054-appb-I000006
Figure PCTKR2010007054-appb-I000007
Figure PCTKR2010007054-appb-I000008
[Chemical Formula 9] [Chemical Formula 10]
Figure PCTKR2010007054-appb-I000009
Figure PCTKR2010007054-appb-I000010
In the above Chemical Formulae, * refers to a position to which a substituent is bound.
According to another aspect of the present invention, an organic photoelectric device is provided that includes an anode, a cathode, and at least one organic thin layer disposed between the anode and cathode. At least one organic thin layer includes the compound for the organic photoelectric device.
The organic thin layer may be selected from the group consisting of an emission layer, a hole transport layer (HTL), a hole injection layer (HIL), anelectron transport layer (ETL), an electron injection layer (EIL), a hole blocking layer, and a combination thereof.
The compound for an organic photoelectric device may be included in an electron transport layer (ETL) or an electron injection layer (EIL).
The compound for an organic photoelectric device may be included in an emission layer.
The compound for an organic photoelectric device may be used as a phosphorescent or fluorescent host material in an emission layer.
The compound for an organic photoelectric device may be used as a fluorescent blue dopant material in an emission layer.
The organic photoelectric device is selected from the group consisting of an organic light emitting diode, an organic solar cell, an organic transistor, an organic photo-conductor drum, an organic memory device, and the like.
According to further another aspect of the present invention, a display device including the organic photoelectric device is provided.
The compound has excellent electrochemical and thermal stability, and can provide an organic photoelectric device having excellent life-span, and high luminous efficiency at a low driving voltage.
FIGS. 1 to 5 are cross-sectional views showing organic light emitting diodes including compounds according to various embodiments of the present invention.
<Description of Reference Numerals Indicating Primary Elements in the Drawings>
100: organic photoelectric device 110: cathode
120: anode 105: organic thin layer
130: emission layer 140: hole transport layer (HTL)
150: electron transport layer (ETL) 160: electron injection layer (EIL)
170: hole injection layer (HIL)
230: emission layer + electron transport layer (ETL)
Exemplary embodiments of the present invention will hereinafter be described in detail. However, these embodiments are only exemplary, and the present invention is not limited thereto.
As used herein, when specific definition is not otherwise provided, the term "substituted" refers to one substituted with at least a substituent selected from the group consisting of a C1 to C30 alkyl group, a C1 to C10 alkylsilyl group, a C3 to C30 cycloalkyl group, a C6 to C30 aryl group, a C1 to C10 alkoxy group, a fluoro, a C1 to 10 trifluoroalkyl group such as trifluoromethyl and the like, or a cyano group.
As used herein, when specific definition is not otherwise provided, the term "hetero" refers to one including 1 to 3 of N, O, S, or P, and remaining carbons in one ring.
As used herein, when a definition is not otherwise provided, the term "combination thereof" refers to at least two substituents bound to each other by a linker, or at least two substituents condensed to each other.
As used herein, when a definition is not otherwise provided, the term "alkyl" refers to an aliphatic hydrocarbon group. The alkyl may be a saturated alkyl group that does not include any alkene or alkyne. Alternatively, the alkyl may be an unsaturated alkyl group that includes at least one alkene or alkyne. The term "alkene" refers to a group in which at least two carbon atoms are bound in at least one carbon-carbon double bond; and the term "alkyne" refers to a group in which at least two carbon atoms are bound in at least one carbon-carbon triple bond. Regardless of being saturated or unsaturated, the alkyl may be branched, linear, or cyclic.
The alkyl group may have 1 to 20 carbon atoms. The alkyl group may be a medium-sized alkyl having 1 to 10 carbon atoms. The alkyl group may be a lower alkyl having 1 to 6 carbon atoms.
For example, a C1-C4 alkyl may have 1 to 4 carbon atoms and may be selected from the group consisting of methyl, ethyl, propyl, iso-propyl, n-butyl, iso-butyl, sec-butyl, and t-butyl.
The representative examples of an alkyl group may be selected from the group consisting of methyl, ethyl, propyl, isopropyl, butyl, isobutyl, t-butyl, pentyl, hexyl, ethenyl, propenyl, butenyl, cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, or the like, which may be individually and independently substituted.
The term "aryl" refers to an aryl group including a carbocyclic aryl (e.g., phenyl) having at least one ring having a covalent pi electron system. The term also refers to monocyclic or fusion ring polycyclic (i.e., rings sharing adjacent pairs of carbon atoms) groups. In addition, this term also refers to a spiro compound having a contact point of one carbon.
The term "heteroaryl" refers to an aryl group including a heterocyclic aryl (e.g., pyridine) having at least one ring having a covalent pi electron system. The term also refers to monocyclic or fusion ring polycyclic (i.e., groups sharing adjacent pairs of carbon atoms) groups. In addition, the term also refers to a spiro compound having a contact point of one carbon.
The compound for an organic photoelectric device according to one embodiment has a structure in which two carbazoles are directly or indirectly bound to a core of another carbazole in the center of the core of the carbazole.
In addition, the compound for an organic photoelectric device may a synthesis of a compound having various energy band gaps by introducing various substituents into the core of a carbazole and two carbazoles bound to the core of the carbazole, so itmay be applied for compounds satisfying conditions required for the emission layer as well as the electron injection layer (EIL) and transport layer.
As the organic photoelectric device includes the compound having the appropriate energy level dependingupon the substituents, the electron transporting property is enforced to provide excellent efficiency and driving voltage, and the electrochemical and thermal stability are improved to enhance the life-span characteristic while driving the organic photoelectric device.
According to one embodiment of the present invention, a compound for an organic photoelectric device represented by the following Chemical Formula 1 is provided.
[Chemical Formula 1]
Figure PCTKR2010007054-appb-I000011
Herein, Ar1 and Ar2 are independently a substituted or unsubstituted C6 to C30 arylene group. For example, Ar1 and Ar2 may independently be a substituted or unsubstituted phenylene group, or a continuously bound of a substituted or unsubstituted phenylene group. In addition, Ar1 and Ar2 may not be present, and two carbazoles may be directly bound to a core of carbazole. An example is as in the following Chemical Formula 2.
[Chemical Formula 2]
Figure PCTKR2010007054-appb-I000012
The light emitting may be controlled in the visible region by adjusting the π-conjugation length of Ar1 and Ar2. Thereby, the compound may be usefully applied to the emission layer of an organic photoelectric device. On the other hand, when the carbon number is more than 30, it is impossible to obtain sufficient effects for the device.
Ar3 is selected from the group consisting of a substituted or unsubstituted C6 to C30 aryl group, a substituted or unsubstituted C5 to C30 heteroaryl group, and a substituted or unsubstituted C1 to C30 alkyl group.
Since the carbazole core structure that is bound with the substituent has improved thermal stability or oxidation resistance, it may improve the life-span characteristic of an organic photoelectric device.
Ar3 is a substituted or unsubstituted C6 to C25 aryl group or a substituted or unsubstituted C5 to C20 heteroaryl group.
Non-limiting examples of Ar3 include the following Chemical Formulae 3 to 10.
[Chemical Formula 3] [Chemical Formula 4] [Chemical Formula 5]
Figure PCTKR2010007054-appb-I000013
Figure PCTKR2010007054-appb-I000014
Figure PCTKR2010007054-appb-I000015
[Chemical Formula 6] [Chemical Formula 7] [Chemical Formula 8]
Figure PCTKR2010007054-appb-I000016
Figure PCTKR2010007054-appb-I000017
Figure PCTKR2010007054-appb-I000018
[Chemical Formula 9] [Chemical Formula 10]
Figure PCTKR2010007054-appb-I000019
Figure PCTKR2010007054-appb-I000020
In the above Chemical Formulae, * refers to a position at which a substituent is bound.
A1 to A22 are independently selected from the group consisting of hydrogen, a substituted or unsubstituted C6 to C30 aryl group, a substituted or unsubstituted C5 to C30 heteroaryl group, and a substituted or unsubstituted C1 to C30 alkyl group. The tri-carbazole structure that is bound with the substituent has excellent light emitting characteristics and mobility of electrons/holes.
At least one substituent selected from the group consisting of A1, A3, A7, A9, A12, A14, A15, A17, A20, and A22 is independently selected from the group consisting of a substituted or unsubstituted C6 to C30 aryl group, a substituted or unsubstituted C5 to C30 heteroaryl group, and a substituted or unsubstituted C1 to C30 alkyl group.
At least one substituent selected from the group consisting of A1, A3, A7, A9, A12, A14, A15, A17, A20, and A22 is independently selected from the group consisting of a substituted or unsubstituted C6 to C12 aryl group, a substituted or unsubstituted C5 to C12 heteroaryl group, and a substituted or unsubstituted C1 to C4 alkyl group.
When the substituent has the ranged carbon number, the molecular weight is small, so it may provide merits in that a sublimation/refinement process may be performed at a relatively low temperature.
The compound for an organic photoelectric devicemay be represented by the following Chemical Formula 11 to Chemical Formula 81. However, the present invention is not limited to the following compounds.
[Chemical Formula 11] [Chemical Formula 12] [Chemical Formula 13]
Figure PCTKR2010007054-appb-I000021
Figure PCTKR2010007054-appb-I000022
Figure PCTKR2010007054-appb-I000023
[Chemical Formula 14] [Chemical Formula 15] [Chemical Formula 16]
Figure PCTKR2010007054-appb-I000024
Figure PCTKR2010007054-appb-I000025
Figure PCTKR2010007054-appb-I000026
[Chemical Formula 17] [Chemical Formula 18] [Chemical Formula 19]
Figure PCTKR2010007054-appb-I000027
Figure PCTKR2010007054-appb-I000028
Figure PCTKR2010007054-appb-I000029
[Chemical Formula 20] [Chemical Formula 21] [Chemical Formula 22]
Figure PCTKR2010007054-appb-I000030
Figure PCTKR2010007054-appb-I000031
Figure PCTKR2010007054-appb-I000032
[Chemical Formula 23] [Chemical Formula 24] [Chemical Formula 25]
Figure PCTKR2010007054-appb-I000033
Figure PCTKR2010007054-appb-I000034
Figure PCTKR2010007054-appb-I000035
[Chemical Formula 26] [Chemical Formula 27] [Chemical Formula 28]
Figure PCTKR2010007054-appb-I000036
Figure PCTKR2010007054-appb-I000037
Figure PCTKR2010007054-appb-I000038
[Chemical Formula 29] [Chemical Formula 30] [Chemical Formula 31]
Figure PCTKR2010007054-appb-I000039
Figure PCTKR2010007054-appb-I000040
Figure PCTKR2010007054-appb-I000041
[Chemical Formula 32] [Chemical Formula 33] [Chemical Formula 34]
Figure PCTKR2010007054-appb-I000042
Figure PCTKR2010007054-appb-I000043
Figure PCTKR2010007054-appb-I000044
[Chemical Formula 35] [Chemical Formula 36] [Chemical Formula 37]
Figure PCTKR2010007054-appb-I000045
Figure PCTKR2010007054-appb-I000046
Figure PCTKR2010007054-appb-I000047
　
[Chemical Formula 38] [Chemical Formula 39] [Chemical Formula 40]
Figure PCTKR2010007054-appb-I000048
Figure PCTKR2010007054-appb-I000049
Figure PCTKR2010007054-appb-I000050
[Chemical Formula 41] [Chemical Formula 42] [Chemical Formula 43]
Figure PCTKR2010007054-appb-I000051
Figure PCTKR2010007054-appb-I000052
Figure PCTKR2010007054-appb-I000053
[Chemical Formula 44] [Chemical Formula 45] [Chemical Formula 46]
Figure PCTKR2010007054-appb-I000054
Figure PCTKR2010007054-appb-I000055
Figure PCTKR2010007054-appb-I000056
[Chemical Formula 47] [Chemical Formula 48] [Chemical Formula 49]
Figure PCTKR2010007054-appb-I000057
Figure PCTKR2010007054-appb-I000058
Figure PCTKR2010007054-appb-I000059
[Chemical Formula 50] [Chemical Formula 51] [Chemical Formula 52]
Figure PCTKR2010007054-appb-I000060
Figure PCTKR2010007054-appb-I000061
Figure PCTKR2010007054-appb-I000062
[Chemical Formula 53] [Chemical Formula 54] [Chemical Formula 55]
Figure PCTKR2010007054-appb-I000063
Figure PCTKR2010007054-appb-I000064
Figure PCTKR2010007054-appb-I000065
[Chemical Formula 56] [Chemical Formula 57] [Chemical Formula 58]
Figure PCTKR2010007054-appb-I000066
Figure PCTKR2010007054-appb-I000067
Figure PCTKR2010007054-appb-I000068
[Chemical Formula 59] [Chemical Formula 60] [Chemical Formula 61]
Figure PCTKR2010007054-appb-I000069
　
Figure PCTKR2010007054-appb-I000070
Figure PCTKR2010007054-appb-I000071
[Chemical Formula 62] [Chemical Formula 63] [Chemical Formula 64]
Figure PCTKR2010007054-appb-I000072
Figure PCTKR2010007054-appb-I000073
Figure PCTKR2010007054-appb-I000074
[Chemical Formula 65] [Chemical Formula 66] [Chemical Formula 67]
Figure PCTKR2010007054-appb-I000075
Figure PCTKR2010007054-appb-I000076
Figure PCTKR2010007054-appb-I000077
[Chemical Formula 68] [Chemical Formula 69] [Chemical Formula 70]
Figure PCTKR2010007054-appb-I000078
Figure PCTKR2010007054-appb-I000079
[Chemical Formula 71] [Chemical Formula 72] [Chemical Formula 73]
Figure PCTKR2010007054-appb-I000081
Figure PCTKR2010007054-appb-I000082
Figure PCTKR2010007054-appb-I000083
[Chemical Formula 74] [Chemical Formula 75] [Chemical Formula 76]
Figure PCTKR2010007054-appb-I000084
Figure PCTKR2010007054-appb-I000085
Figure PCTKR2010007054-appb-I000086
[Chemical Formula 77] [Chemical Formula 78] [Chemical Formula 79]
Figure PCTKR2010007054-appb-I000087
Figure PCTKR2010007054-appb-I000088
Figure PCTKR2010007054-appb-I000089
[Chemical Formula 80] [Chemical Formula 81]
Figure PCTKR2010007054-appb-I000090
Figure PCTKR2010007054-appb-I000091
The compound for an organic photoelectric device including the above compound has a glass transition temperature of 120℃ or higher and a thermal decomposition temperature of 400℃ or higher, so as to improve thermal stability. Thereby, it is possible to produce an organic photoelectric device having a high efficiency.
The compound for an organic photoelectric device including the above compound may play a role for emitting light or injecting and/or transporting electrons, and it may act as a light emitting host together with a suitable dopant. In other words,the compound for an organic photoelectric device may be used as a phosphorescent or fluorescent host material, a blue light emitting dopant material, or an electron transporting material.
Since the compound for an organic photoelectric device according to one embodiment is used for an organic thin layer, it may improve the life-span characteristic, efficiency characteristic, electrochemical stability, and thermal stability of an organic photoelectric device and decrease the driving voltage.
Therefore, according to another embodiment, an organic photoelectric device is provided that includes the compound for an organic photoelectric device. The organic photoelectric device may include an organic luminescentc device, an organic solar cell, an organic transistor, an organic photosensitive drum, an organic memory device, or the like. For example, the compound for an organic photoelectric device according to one embodiment may beincluded in an electrode or an electrode buffer layer in the organic solar cell to improve the quantum efficiency, and it may be used as an electrode material for a gate, a source-drain electrode, or the like in the organic transistor.
Hereinafter, a detailed described relating to the organic photoelectric device will be provided.
According to another embodiment of the present invention, the organic photoelectric device includes an anode, a cathode, and at least one organic thin layer interposed between the anode and the cathode, wherein the at least one organic thin layer may provide an organic photoelectric device including the compound for an organic photoelectric device according to one embodiment.
The organic thin layer that may include the compound for an organic photoelectric device may include a layer selected from the group consisting of an emission layer, a hole transport layer (HTL), a hole injection layer (HIL), an electron transport layer (ETL), an electron injection layer (EIL), a hole blocking film, and a combination thereof. The at least one layer includes the compound for an organic photoelectric device according to one embodiment. Particularly, the electron transport layer (ETL) or the electron injection layer (EIL) may include the compound for an organic photoelectric device according to one embodiment. In addition, when the compound for an organic photoelectric device is included in the emission layer, the compound for an organic photoelectric device may be included as a phosphorescent or fluorescent host, and particularly, as a fluorescent blue dopant material.
FIGS. 1 to 5 are cross-sectional views showing an organic photoelectric device including the compound for an organic photoelectric device according to one embodiment of the present invention.
Referring to FIGS. 1 to 5, organic photoelectric devices 100, 200, 300, 400, and 500 according to one embodiment include at least one organic thin layer 105 interposed between an anode 120 and a cathode 110.
The anode 120 includes an anode material laving a large work function to help hole injection into an organic thin layer. The anode material includes: a metal such as nickel, platinum, vanadium, chromium, copper, zinc, and gold, or alloys thereof a metal oxide such as zinc oxide, indium oxide, indium tin oxide (ITO), and indium zinc oxide (IZO); a combined metal and oxide such as ZnO:Al or SnO2:Sb; or a conductive polymer such as poly(3-methylthiophene), poly[3,4-(ethylene-1,2-dioxy)thiophene] (PEDT), polypyrrole, and polyaniline, but is not limited thereto. It is preferable to include a transparent electrode including indium tin oxide (ITO) as an anode.
The cathode 110includes a cathode material having a small work function to help electron injection into an organic thin layer. The cathode material includes: a metal such as magnesium, calcium, sodium, potassium, titanium, indium, yttrium, lithium, gadolinium, aluminum, silver, tin, and lead, or alloys thereof or a multi-layered material such as LiF/Al, Liq/Al, LiO2/Al, LiF/Ca, LiF/Al, and BaF2/Ca, but is not limited thereto. It is preferable to include a metal electrode including aluminum as a cathode.
Referring to FIG. 1, the organic photoelectric device 100 includes an organic thin layer 105 including only an emission layer 130.
Referring to FIG. 2, a double-layered organic photoelectric device 200 includes an organic thin layer 105 including an emission layer 230 including an electron transport layer (ETL), and a hole transport layer (HTL) 140. The emission layer 130 also functions as an electron transport layer (ETL), and the hole transport layer (HTL) 140 layer has an excellent binding property with a transparent electrode such as ITO or an excellent hole transporting property.
Referring to FIG. 3, a three-layered organic photoelectric device 300 includes anorganic thin layer 105 including an electron transport layer (ETL) 150, an emission layer 130, and a hole transport layer (HTL) 140. The emission layer 130 is independently installed, and layers having an excellent electron transporting property or an excellent hole transporting property are separately stacked.
As shown in FIG. 4, a four-layered organic photoelectric device 400 includes an organic thin layer 105 including an electron injection layer (EIL) 160, an emission layer 130, a hole transport layer (HTL) 140, and a hole injection layer (HIL) 170 for binding with the cathode of ITO.
As shown in FIG. 5, a five layered organic photoelectric device 500 includes an organic thin layer 105 including an electron transport layer (ETL) 150, an emission layer 130, a hole transport layer (HTL) 140, and a hole injection layer (HIL) 170, and further includes an electron injection layer (EIL) 160 to achieve a low voltage.
In FIG. 1 to FIG. 5, the organic thin layer 105 including at least one selected from the group consisting of an electron transport layer (ETL) 150, an electron injection layer (EIL) 160, an emission layer 130 and 230, a hole transport layer (HTL)140, a hole injection layer (HIL) 170, and combinations thereof includes a compound for an organic photoelectric device. The material for the organic photoelectric device may be used for an electron transport layer (ETL) 150including the electron transport layer (ETL) 150 or electron injection layer (EIL) 160. When it is used for the electron transport layer (ETL), it is possible to provide an organic photoelectric device having a more simple structure because it does not require an additional hole blocking layer (not shown).
Furthermore, when the compound for an organic photoelectric device is includedin the emission layer 130 and 230, the material for the organic photoelectric device may be included as a phosphorescent or fluorescent host or a fluorescent blue dopant.
The organic photoelectric device may be fabricated by: forming an anode on a substrate; forming an organic thin layer in accordance with a dry coating method such as evaporation, sputtering, plasma plating, and ion plating or a wet coating method such as spin coating, dipping, and flow coating and providing a cathode thereon.
Another embodiment of the present invention provides a display device including the organic photoelectric deviceaccording to the above embodiment.
Hereinafter, the embodiments are illustrated in more detail with reference to examples. However, the following are exemplary embodiments and are not limiting.
Preparation of compound for organic photoelectric device
Example 1: Synthesis of compound represented by Chemical Formula 15
As a representative example of a compound for an organic photoelectric device according to the present invention, the compound represented by Chemical Formula 15 was synthesized through 4 steps as in Reaction Scheme 1.
[Reaction Scheme 1]
Figure PCTKR2010007054-appb-I000092
Step 1: Synthesizing intermediate product (A)
10g (0.031mole) of 1,3,5 tribromobenzene, 10.367g (0.062mol) of carbazole, 300mg (3.1mmol) of copper chloride, and 8.56g (62mmol) of potassium carbonate were suspended in 400ml of toluene, and the mixture was refluxed for 24 hours. The reaction fluid was separated into 2 layers, and then the organic thin layer was washed with a saturated sodium chloride aqueous solution and dried with anhydrous sodium sulfate.
The organic solvent was removed by distillation under reduced pressure, and then the residue was recrystalized with methanol to provide a crystal. The crystal was separated using a column chromatograph (chloroform) to provide 9.75g (yield: 65 %) of a white intermediate product (A).
Step 2: Synthesizing intermediate product (B)
5g (10mmol) of the synthesized intermediate product (A), 2.5g (10mmol) of ortho nitro boronic ester, 1.15g (1mmol) of tetrakis-(triphenylphosphine)palladium, and 1.38g (10mmol) of potassium carbonate were refluxed in 100ml of toluene and 20ml of water for 12 hours.
The reaction fluid was separated into two layers, and then the organic layer was washed with a saturated sodium chloride aqueous solution and dried with anhydrous sodium sulfate.
The organic solvent was removed by distillation under reduced pressure, and then the residue was recrystalized with toluene to provide a crystal. The crystal was separated by filtration and washed with toluene to synthesize 4.44g (84%) of intermediate compound (B).
Step 3: Synthesizing intermediate product (C)
4g (7.5mmol) of intermediate product (B) and3.96g (15mmol) of triphenylphosphine were refluxed with 40ml of dichlorobenzene for 48 hours. After separating the reaction fluid into 2 layers, the organic layer was washed with a saturated sodium chloride aqueous solution and dried with anhydrous sodium sulfate.
The organic solvent was removed by distillation under reduced pressure, and then the residue was recrystallized with hexane to provide a crystal. The crystal was separated by filtration and washed with methanol to synthesize 3g (80%) of intermediate compound (C).
Step 4: Synthesizing compound represented by Chemical Formula 15
3g (6 mmol) of intermediate product (C), 0.94g(6mmol) of bromobenzene, and 59mg (0.6mmol) of copper chloride were refluxed with 100ml of toluene for 24 hours.
After separating the reaction fluid into 2 layers, the organic layer was washed with a saturated sodium chloride aqueous solution and dried with anhydrous sodium sulfate.
The organic solvent was removed by distillation under reduced pressure, and then the residue was recrystallized with methanol to provide a crystal. The crystal was separated by filtration and washed with toluene to synthesize 2.68g (yield: 78%) of a compound represented by Chemical Formula 15.
EA: C, 87.91; H, 4.72; N, 7.32
MS[M+1] 573.
Example 2: Synthesizing Compound represented by Chemical Formula 11
As an example of a compound for an organic photoelectric device according to the present invention, a compound represented by Chemical Formula 11 was synthesized via the following Reaction Scheme 2.
[Reaction Scheme 2]
Figure PCTKR2010007054-appb-I000093
5g (10mmol) of intermediate product (C), 3.2g (10mmol) of n-bromophenylcarbazole, 99mg (1mmol) of copper chloride, and 2.07g (15mmol) of potassium carbonate were refluxed in DMSO for 48 hours.
After separating the reaction fluid into 2 layers, the organic layer was washed with a saturated sodium chloride aqueous solution and dried with anhydrous sodium sulfate.
The organic solvent was removed by distillation under reduced pressure, and then the residue was recrystallized with methanol to provide a crystal. The crystal was separated by filtration and washed with toluene to synthesize 5.09g (yield: 69%) of a compound represented by Chemical Formula 11.
EA: C, 87.76; H, 4.62; N, 7.6
EA: C, 87.91; H, 4.72; N, 7.32
MS[M+1] 738.2
Example 3: Synthesizing Compound represented by Chemical Formula 19
As an example of a compound for an organic photoelectric device according to the present invention, a compound represented by Chemical Formula 19 was synthesized via the following Reaction Scheme 3.
[Reaction Scheme 3]
Figure PCTKR2010007054-appb-I000094
5g (10mmol) of intermediate product (C), 3.09g (10mmol) of bromodiphenylpyridine, 99mg (1mmol) of copper chloride, and 2.07g (15mmol) of potassium carbonate were refluxed in DMSO for 48 hours.
After separating the reaction fluid into 2 layers, the organic layer was washed with a saturated sodium chloride aqueous solution and dried with anhydrous sodium sulfate.
The organic solvent was removed by distillation under reduced pressure, and then the residue was recrystallized with methanol to provide a crystal. The crystal was separated by filtration and washed with methanol to provide 4.64g (yield: 64%) of a compound represented by Chemical Formula 19.
EA:C, 87.58; H, 4.71; N, 7.71
MS[M+1] 726.28
Example 4: Synthesizing Compound represented by Chemical Formula 29
As a particular example of a compound for an organic photoelectric device according to the present invention, a compound represented by Chemical Formula 29 was synthesized via the following Reaction Scheme 4.
[Reaction Scheme 4]
Figure PCTKR2010007054-appb-I000095
5g (10mmol) of intermediate product (C), 2.05g (10mmol) of bromonaphthalene, 99mg (1mmol) of copper chloride, and 2.07g (15mmol) of potassium carbonate were refluxed in DMSO for 48 hours.
After separating the reaction fluid into 2 layers, the organic layer was washed with a saturated sodium chloride aqueous solution and dried with anhydrous sodium sulfate.
The organic solvent was removed by distillation under reduced pressure, and then the residue was recrystallized with methanol to provide a crystal. The crystal was separated by filtration and washed with methanol to provide 4.53g (yield: 73%) of a compound represented by Chemical Formula 29.
EA: C, 88.58; H, 4.69; N, 6.74
MS[M+1] : 623.2
Example 5: Synthesizing Compound represented by Chemical Formula 46
As a particular example of a compound for an organic photoelectric device according to the present invention, a compound represented by Chemical Formula 46 was synthesized via the following Reaction Scheme 5.
[Reaction Scheme 5]
Figure PCTKR2010007054-appb-I000096
5g (10mmol) of intermediate product (C), 3.21g (10mmol) of bromophenylcarbazole, 99mg (1mmol) of copper chloride, and 2.07g (15mmol) of potassium carbonate were refluxed in DMSO for 48 hours.
After separating the reaction flux into 2 layers, the organic layer was washed with a saturated sodium chloride aqueous solution and dried with anhydrous sodium sulfate.
The organic solvent was removed by distillation under reduced pressure, and then the residue was recrystallized with methanol to provide a crystal. The crystal was separated by filtration and washed with methanol to provide 5.09g (yield: 69%) of a compound represented by Chemical Formula 46.
EA: C, 87.78; H, 4.64; N, 7.58
MS[M+1] : 738.28
(Fabrication of Organic Photoelectric Device)
Example 6
Figure PCTKR2010007054-appb-I000097
DNTPD
An organic photoelectric device was fabricated by using a host of the compound represented by Chemical Formula 11 obtained from Example 2 as a host, and a dopant of Ir(PPy)3.
The anodewas ITO having a thickness of 1000Å and the cathode was aluminum (Al) having a thickness of 1000Å.
The organic emission layer has a 5-layered structure.
For example, it has a 5-layered structure of ITO/DNTPD (60nm)/NPB (30nm)/EML (10%, 30nm)/Alq3 (20nm)/LiF/Al (100nm).
The organic photoelectric device was fabricated by cutting an ITO glass substrate having a sheet resistance of 15Ψ/cm2　to a size of 50mm 50mm 0.7mm, ultrasonic wave cleaning the same in acetone, isopropyl alcohol, and pure water for 15 minutes for each, and UV ozone cleaning the same to provide an anode.
DNTPD and NPD were deposited on the upper surface of the substrate under the conditions of a vacuum degree of 650 10-7　Pa and a deposition speed of 0.1 to 0.3 nm/s to provide a hole transport layer (HTL) having a thickness of 900 .
Subsequently, a 300 -thick emission layer was prepared by using the compound represented by Chemical Formula 11 under the same vacuum deposition conditions, and a phosphorescence dopant of Ir(PPy)3 was simultaneously deposited.
Then Alq3 was deposited under the same vacuum deposition conditions to provide an electron transport layer (ETL) having a thickness of 200 . LiF and Al were sequentially deposited on the upper surface of the electron transport layer (ETL) to complete an organic photoelectric device.
Example 7
An organic photoelectric device was fabricated in accordance with the same procedure as in Example 6, except that the compound represented by Chemical Formula 19 was used instead of the compound represented by Chemical Formula 11.
Example 8
An organic photoelectric device was fabricated in accordance with the sameprocedure as in Example 6, except that the compound represented by Chemical Formula 46 was used instead of the compound represented by Chemical Formula 11.
Comparative Example
An organic photoelectric device having a structure of ITO/DNTPD (60nm)/NPB (30nm)/CBP (10%, 30nm)/Alq3(20nm)/LiF/Al (100nm) was fabricated in accordance with the same procedure as in Example 6, except that 4,4-N,N-dicarbazolebiphenyl (CBP) was used instead of the compound represented by Chemical Formula 11.
(Experimental Example)
Method and condition
Each of the obtained organic photoelectric devices was measured for luminance change, current density change depending upon voltage, and luminous efficiency. The specific method was as follows.
1) Measurement of Current Density Change Depending on Voltage Change
The obtained organic photoelectric device was measured for current value flowing in the unit device while increasing the voltage from 0V to 10V using a current-voltage meter(Keithley 2400), and the measured current value was divided by area to provide the result.
2) Measurement of Luminance Change Depending on Voltage Change
The obtained organic photoelectric device was measured for luminance using a luminance meter (Minolta Cs-1000A) while increasing the voltage from 0V to 10V.
3) Measurement of Luminous Efficiency
The luminous efficiency was calculated by using luminance and current density from 1) and 2), and voltage
Results
Table 1
Comparative Example Example 6 Example 7 Example 8
Turn-on voltage(1 cd/m2) 2.6 V 2.8 V 2.6 V 4.4 V
Operating voltage(1000 cd/m2) 5.6 V 7.0 V 4.5 V 7.8 V
Efficiency(1000 cd/m2) 35.80 cd/A20.08 lm/W 17.59 cd/A7.90 lm/W 37.76 cd/A25.79 lm/W 23.70 cd/A9.54 lm/W
Efficiency(Maximum) 36.86 cd/A37.46 lm/W 38.76 cd/A46.31 lm/W 38.07 cd/A44.33 lm/W 30.49 cd/A17.81 lm/W
CIE (x,y)(1000 cd/m2) 0.30 and 0.61 0.29 and 0.61 0.31 and 0.61 0.29 and 0.61
From the characteristic results of the organic photoelectric devices, it is understood that Example 7 had a driving voltage of 4.5 or less at aluminance of 1000 nit and had a higher device level than the comparative example including CBP.
It also had a better result than the comparative example in the view of luminous efficiency. Furthermore, it had higher efficiency than the comparative example in the view of power efficiency, which is a more important characteristic of an organic photoelectric device. Since Example 7 had a lower driving voltage than the comparative example, it had superior power efficiency with regard to the comparative example.
Example 6 showed the maximum electric power efficiency of 46.31lm/w in which power efficiency was 123% of that of the comparative example.
In addition, Examples 6, 7, and 8 showed solubility in toluene of about 5wt%, which means that they may be applied for developing a future organic electric field light emitting element by a solution process.
The material mentioned in the present invention showed a low driving voltage and high luminous efficiency in the results of analyzing an organic photoelectric device, and the life-span of the device was enhanced in a device driving test, but this is not described in this specification.
The present invention is not limited to the embodiments illustrated with the drawings and table, but can be fabricated into various modifications and equivalent arrangements included within the spirit and scope of the appended claims by a person who is ordinarily skilled in this field. Therefore, the aforementioned embodiments should be understood to be exemplary but not limiting the present invention in any way.

Claims (15)

  1. A compound for an organic photoelectric device represented by the following Chemical Formula 1:
    [Chemical Formula 1]
    Figure PCTKR2010007054-appb-I000098
    wherein
    Ar1 and Ar2 are independently a substituted or unsubstituted C6 to C30 arylene group,
    Ar3 is selected from the group consisting of a substituted or unsubstituted C6 to C30 aryl group, a substituted or unsubstituted C5 to C30 heteroaryl group, and a substituted or unsubstituted C1 to C30 alkyl group, and
    A1 to A22 are independently selected from the group consisting of hydrogen, a substituted or unsubstituted C6 to C30 aryl group, a substituted or unsubstituted C5 to C30 heteroaryl group, and a substituted or unsubstituted C1 to C30 alkyl group.
  2. The compound of claim 1, wherein the compound is represented by the following Chemical Formula 2:
    [Chemical Formula 2]
    Figure PCTKR2010007054-appb-I000099
    wherein
    Ar3 is selected from the group consisting of a substituted or unsubstituted C6 to C30 aryl group, a substituted or unsubstituted C5 to C30 heteroaryl group, and a substituted or unsubstituted C1 to C30 alkyl group, and
    A1 to A22 are independently selected from the group consisting of hydrogen, a substituted or unsubstituted C6 to C30 aryl group, a substituted or unsubstituted C5 to C30 heteroaryl group, and a substituted or unsubstituted C1 to C30 alkyl group.
  3. The compound of claim 2, wherein at least one substituent selected from the group consisting of A1, A3, A7, A9, A12, A14, A15, A17, A20, and A22 is independently selected from the group consisting of a substituted or unsubstituted C6 to C30 aryl group, a substituted or unsubstituted C5 to C30 heteroaryl group, and a substituted or unsubstituted C1 to C30 alkyl group.
  4. The compound of claim 3, wherein at least one substituent selected from the group consisting of A1, A3, A7, A9, A12, A14, A15, A17, A20, and A22 is independently selected from the group consisting of a substituted or unsubstituted C6 to C12 aryl group, a substituted or unsubstituted C5 to C12 heteroaryl group, and a substituted or unsubstituted C1 to C4 alkyl group.
  5. The compound of claim 1 or claim 2, wherein Ar3 is a substituted or unsubstituted C6 to C25 aryl group or a substituted or unsubstituted C5 to C20 heteroaryl group.
  6. The compound of claim 1 or 2, wherein Ar3 is selected from the group consisting of the following Chemical Formulae 3 to 10:
    [Chemical Formula 3] [Chemical Formula 4] [Chemical Formula 5]
    Figure PCTKR2010007054-appb-I000100
    Figure PCTKR2010007054-appb-I000101
    Figure PCTKR2010007054-appb-I000102
    [Chemical Formula 6] [Chemical Formula 7] [Chemical Formula 8]
    Figure PCTKR2010007054-appb-I000103
    Figure PCTKR2010007054-appb-I000104
    Figure PCTKR2010007054-appb-I000105
    [Chemical Formula 9] [Chemical Formula 10]
    Figure PCTKR2010007054-appb-I000106
    Figure PCTKR2010007054-appb-I000107
    wherein, in the above Chemical Formulae, * refers to a position to which a substituent is bound.
  7. A compound represented by the following Chemical Formulae 11 to 81:
    [Chemical Formula 11] [Chemical Formula 12] [Chemical Formula 13]
    Figure PCTKR2010007054-appb-I000108
    Figure PCTKR2010007054-appb-I000109
    Figure PCTKR2010007054-appb-I000110
    [Chemical Formula 14] [Chemical Formula 15] [Chemical Formula 16]
    Figure PCTKR2010007054-appb-I000111
    Figure PCTKR2010007054-appb-I000112
    Figure PCTKR2010007054-appb-I000113
    [Chemical Formula 17] [Chemical Formula 18] [Chemical Formula 19]
    Figure PCTKR2010007054-appb-I000114
    Figure PCTKR2010007054-appb-I000115
    Figure PCTKR2010007054-appb-I000116
    [Chemical Formula 20] [Chemical Formula 21] [Chemical Formula 22]
    Figure PCTKR2010007054-appb-I000117
    Figure PCTKR2010007054-appb-I000118
    Figure PCTKR2010007054-appb-I000119
    [Chemical Formula 23] [Chemical Formula 24] [Chemical Formula 25]
    Figure PCTKR2010007054-appb-I000120
    Figure PCTKR2010007054-appb-I000121
    Figure PCTKR2010007054-appb-I000122
    [Chemical Formula 26] [Chemical Formula 27] [Chemical Formula 28]
    Figure PCTKR2010007054-appb-I000123
    Figure PCTKR2010007054-appb-I000124
    Figure PCTKR2010007054-appb-I000125
    [Chemical Formula 29] [Chemical Formula 30] [Chemical Formula 31]
    Figure PCTKR2010007054-appb-I000126
    Figure PCTKR2010007054-appb-I000127
    Figure PCTKR2010007054-appb-I000128
    [Chemical Formula 32] [Chemical Formula 33] [Chemical Formula 34]
    Figure PCTKR2010007054-appb-I000129
    Figure PCTKR2010007054-appb-I000130
    Figure PCTKR2010007054-appb-I000131
    [Chemical Formula 35] [Chemical Formula 36] [Chemical Formula 37]
    Figure PCTKR2010007054-appb-I000132
    Figure PCTKR2010007054-appb-I000133
    Figure PCTKR2010007054-appb-I000134
    　
    [Chemical Formula 38] [Chemical Formula 39] [Chemical Formula 40]
    Figure PCTKR2010007054-appb-I000135
    Figure PCTKR2010007054-appb-I000136
    Figure PCTKR2010007054-appb-I000137
    [Chemical Formula 41] [Chemical Formula 42] [Chemical Formula 43]
    Figure PCTKR2010007054-appb-I000138
    Figure PCTKR2010007054-appb-I000139
    Figure PCTKR2010007054-appb-I000140
    [Chemical Formula 44] [Chemical Formula 45] [Chemical Formula 46]
    Figure PCTKR2010007054-appb-I000141
    Figure PCTKR2010007054-appb-I000142
    Figure PCTKR2010007054-appb-I000143
    [Chemical Formula 47] [Chemical Formula 48] [Chemical Formula 49]
    Figure PCTKR2010007054-appb-I000144
    Figure PCTKR2010007054-appb-I000145
    Figure PCTKR2010007054-appb-I000146
    [Chemical Formula 50] [Chemical Formula 51] [Chemical Formula 52]
    Figure PCTKR2010007054-appb-I000147
    Figure PCTKR2010007054-appb-I000148
    Figure PCTKR2010007054-appb-I000149
    [Chemical Formula 53] [Chemical Formula 54] [Chemical Formula 55]
    Figure PCTKR2010007054-appb-I000150
    Figure PCTKR2010007054-appb-I000151
    Figure PCTKR2010007054-appb-I000152
    [Chemical Formula 56] [Chemical Formula 57] [Chemical Formula 58]
    Figure PCTKR2010007054-appb-I000153
    Figure PCTKR2010007054-appb-I000154
    Figure PCTKR2010007054-appb-I000155
    [Chemical Formula 59] [Chemical Formula 60] [Chemical Formula 61]
    Figure PCTKR2010007054-appb-I000156
    　
    Figure PCTKR2010007054-appb-I000157
    Figure PCTKR2010007054-appb-I000158
    [Chemical Formula 62] [Chemical Formula 63] [Chemical Formula 64]
    Figure PCTKR2010007054-appb-I000159
    Figure PCTKR2010007054-appb-I000160
    Figure PCTKR2010007054-appb-I000161
    [Chemical Formula 65] [Chemical Formula 66] [Chemical Formula 67]
    Figure PCTKR2010007054-appb-I000162
    Figure PCTKR2010007054-appb-I000163
    Figure PCTKR2010007054-appb-I000164
    [Chemical Formula 68] [Chemical Formula 69] [Chemical Formula 70]
    Figure PCTKR2010007054-appb-I000165
    Figure PCTKR2010007054-appb-I000166
    Figure PCTKR2010007054-appb-I000167
    [Chemical Formula 71] [Chemical Formula 72] [Chemical Formula 73]
    Figure PCTKR2010007054-appb-I000168
    Figure PCTKR2010007054-appb-I000169
    Figure PCTKR2010007054-appb-I000170
    [Chemical Formula 74] [Chemical Formula 75] [Chemical Formula 76]
    Figure PCTKR2010007054-appb-I000171
    Figure PCTKR2010007054-appb-I000172
    Figure PCTKR2010007054-appb-I000173
    [Chemical Formula 77] [Chemical Formula 78] [Chemical Formula 79]
    Figure PCTKR2010007054-appb-I000174
    Figure PCTKR2010007054-appb-I000175
    Figure PCTKR2010007054-appb-I000176
    [Chemical Formula 80] [Chemical Formula 81]
    Figure PCTKR2010007054-appb-I000177
    Figure PCTKR2010007054-appb-I000178
  8. An organic photoelectric device comprising
    an anode, a cathode, and at least one organic thin layer disposed between the anode and cathode,
    wherein at least one the organic thin layer comprises the compound according to one of claims 1 to 4.
  9. The organic photoelectric device of claim 8, wherein the organic thin layer is selected from the group consisting of an emission layer, a hole transport layer (HTL), a hole injection layer (HIL), an electron transport layer (ETL), an electron injection layer (EIL), a hole blocking layer, and a combination thereof.
  10. The organic photoelectric device of claim 8, wherein the compound is included in an electron transport layer (ETL)or an electron injection layer (EIL).
  11. The organic photoelectric device of claim 8, wherein the compound is included in an emission layer.
  12. The organic photoelectric device of claim 8, wherein the compound is used as a phosphorescent or fluorescent host material in an emission layer.
  13. The organic photoelectric device of claim 8, wherein the compound is used as a fluorescent blue dopant material in an emission layer.
  14. The organic photoelectric device of claim 8, wherein the organic photoelectric device is selected from the group consisting of an organic light emitting diode, an organic solar cell, an organic transistor, an organic photo-conductor drum, and an organic memory device.
  15. A display device comprising an organic photoelectric device according to claim 8.
PCT/KR2010/007054 2009-10-21 2010-10-14 Novel compound for organic photoelectric device and organic photoelectric device including the same WO2011049325A2 (en)

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