WO2004081019A1 - 有機金属錯体、前記錯体を用いた電界発光材料および前記錯体を用いた電界発光素子 - Google Patents
有機金属錯体、前記錯体を用いた電界発光材料および前記錯体を用いた電界発光素子 Download PDFInfo
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- WO2004081019A1 WO2004081019A1 PCT/JP2004/001165 JP2004001165W WO2004081019A1 WO 2004081019 A1 WO2004081019 A1 WO 2004081019A1 JP 2004001165 W JP2004001165 W JP 2004001165W WO 2004081019 A1 WO2004081019 A1 WO 2004081019A1
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- 125000004860 4-ethylphenyl group Chemical group [H]C1=C([H])C(=C([H])C([H])=C1*)C([H])([H])C([H])([H])[H] 0.000 description 1
- SCZWJXTUYYSKGF-UHFFFAOYSA-N 5,12-dimethylquinolino[2,3-b]acridine-7,14-dione Chemical compound CN1C2=CC=CC=C2C(=O)C2=C1C=C1C(=O)C3=CC=CC=C3N(C)C1=C2 SCZWJXTUYYSKGF-UHFFFAOYSA-N 0.000 description 1
- 125000004070 6 membered heterocyclic group Chemical group 0.000 description 1
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 229920002799 BoPET Polymers 0.000 description 1
- NLZUEZXRPGMBCV-UHFFFAOYSA-N Butylhydroxytoluene Chemical compound CC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 NLZUEZXRPGMBCV-UHFFFAOYSA-N 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- ONIBWKKTOPOVIA-BYPYZUCNSA-N L-Proline Chemical compound OC(=O)[C@@H]1CCCN1 ONIBWKKTOPOVIA-BYPYZUCNSA-N 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- 239000005041 Mylar™ Substances 0.000 description 1
- RUOLQCAHCHLZES-UHFFFAOYSA-N N,N-diphenyl-10H-phenoxazin-1-amine Chemical compound C1(=CC=CC=C1)N(C1=CC=CC=C1)C1=CC=CC=2OC3=CC=CC=C3NC1=2 RUOLQCAHCHLZES-UHFFFAOYSA-N 0.000 description 1
- ZCQWOFVYLHDMMC-UHFFFAOYSA-N Oxazole Chemical compound C1=COC=N1 ZCQWOFVYLHDMMC-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
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- NRCMAYZCPIVABH-UHFFFAOYSA-N Quinacridone Chemical compound N1C2=CC=CC=C2C(=O)C2=C1C=C1C(=O)C3=CC=CC=C3NC1=C2 NRCMAYZCPIVABH-UHFFFAOYSA-N 0.000 description 1
- 206010070834 Sensitisation Diseases 0.000 description 1
- FZWLAAWBMGSTSO-UHFFFAOYSA-N Thiazole Chemical compound C1=CSC=N1 FZWLAAWBMGSTSO-UHFFFAOYSA-N 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 1
- AZWHFTKIBIQKCA-UHFFFAOYSA-N [Sn+2]=O.[O-2].[In+3] Chemical compound [Sn+2]=O.[O-2].[In+3] AZWHFTKIBIQKCA-UHFFFAOYSA-N 0.000 description 1
- 125000002521 alkyl halide group Chemical group 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 150000004982 aromatic amines Chemical class 0.000 description 1
- 125000001769 aryl amino group Chemical group 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 125000005605 benzo group Chemical group 0.000 description 1
- 229910052792 caesium Inorganic materials 0.000 description 1
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 description 1
- 229910001634 calcium fluoride Inorganic materials 0.000 description 1
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- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 125000002915 carbonyl group Chemical group [*:2]C([*:1])=O 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
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- 238000000576 coating method Methods 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
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- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- XCJYREBRNVKWGJ-UHFFFAOYSA-N copper(II) phthalocyanine Chemical compound [Cu+2].C12=CC=CC=C2C(N=C2[N-]C(C3=CC=CC=C32)=N2)=NC1=NC([C]1C=CC=CC1=1)=NC=1N=C1[C]3C=CC=CC3=C2[N-]1 XCJYREBRNVKWGJ-UHFFFAOYSA-N 0.000 description 1
- 125000000753 cycloalkyl group Chemical group 0.000 description 1
- 125000000113 cyclohexyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C1([H])[H] 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 229940117389 dichlorobenzene Drugs 0.000 description 1
- BEPAFCGSDWSTEL-UHFFFAOYSA-N dimethyl malonate Chemical compound COC(=O)CC(=O)OC BEPAFCGSDWSTEL-UHFFFAOYSA-N 0.000 description 1
- 125000002147 dimethylamino group Chemical group [H]C([H])([H])N(*)C([H])([H])[H] 0.000 description 1
- BOOQTIHIKDDPRW-UHFFFAOYSA-N dipropyltryptamine Chemical compound C1=CC=C2C(CCN(CCC)CCC)=CNC2=C1 BOOQTIHIKDDPRW-UHFFFAOYSA-N 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 125000001301 ethoxy group Chemical group [H]C([H])([H])C([H])([H])O* 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 125000001207 fluorophenyl group Chemical group 0.000 description 1
- 125000002541 furyl group Chemical group 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 150000002391 heterocyclic compounds Chemical class 0.000 description 1
- 125000004051 hexyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000003707 hexyloxy group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])O* 0.000 description 1
- 229910003437 indium oxide Inorganic materials 0.000 description 1
- PJXISJQVUVHSOJ-UHFFFAOYSA-N indium(iii) oxide Chemical compound [O-2].[O-2].[O-2].[In+3].[In+3] PJXISJQVUVHSOJ-UHFFFAOYSA-N 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 150000002484 inorganic compounds Chemical class 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 150000002503 iridium Chemical class 0.000 description 1
- 125000003253 isopropoxy group Chemical group [H]C([H])([H])C([H])(O*)C([H])([H])[H] 0.000 description 1
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- 238000001748 luminescence spectrum Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 125000000956 methoxy group Chemical group [H]C([H])([H])O* 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- ZXCJBQZTWJXGME-UHFFFAOYSA-N n,n-dimethyl-10h-phenoxazin-1-amine Chemical compound O1C2=CC=CC=C2NC2=C1C=CC=C2N(C)C ZXCJBQZTWJXGME-UHFFFAOYSA-N 0.000 description 1
- IBHBKWKFFTZAHE-UHFFFAOYSA-N n-[4-[4-(n-naphthalen-1-ylanilino)phenyl]phenyl]-n-phenylnaphthalen-1-amine Chemical compound C1=CC=CC=C1N(C=1C2=CC=CC=C2C=CC=1)C1=CC=C(C=2C=CC(=CC=2)N(C=2C=CC=CC=2)C=2C3=CC=CC=C3C=CC=2)C=C1 IBHBKWKFFTZAHE-UHFFFAOYSA-N 0.000 description 1
- 125000006606 n-butoxy group Chemical group 0.000 description 1
- 125000004108 n-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000003506 n-propoxy group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])O* 0.000 description 1
- 125000001624 naphthyl group Chemical group 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 125000003261 o-tolyl group Chemical group [H]C1=C([H])C(*)=C(C([H])=C1[H])C([H])([H])[H] 0.000 description 1
- 238000006213 oxygenation reaction Methods 0.000 description 1
- 229960003540 oxyquinoline Drugs 0.000 description 1
- 125000001037 p-tolyl group Chemical group [H]C1=C([H])C(=C([H])C([H])=C1*)C([H])([H])[H] 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 125000002080 perylenyl group Chemical group C1(=CC=C2C=CC=C3C4=CC=CC5=CC=CC(C1=C23)=C45)* 0.000 description 1
- CSHWQDPOILHKBI-UHFFFAOYSA-N peryrene Natural products C1=CC(C2=CC=CC=3C2=C2C=CC=3)=C3C2=CC=CC3=C1 CSHWQDPOILHKBI-UHFFFAOYSA-N 0.000 description 1
- 150000002990 phenothiazines Chemical class 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920000767 polyaniline Polymers 0.000 description 1
- 125000003367 polycyclic group Chemical group 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229960002796 polystyrene sulfonate Drugs 0.000 description 1
- 239000011970 polystyrene sulfonate Substances 0.000 description 1
- 150000004032 porphyrins Chemical class 0.000 description 1
- 125000004076 pyridyl group Chemical group 0.000 description 1
- 238000006862 quantum yield reaction Methods 0.000 description 1
- MCJGNVYPOGVAJF-UHFFFAOYSA-N quinolin-8-ol Chemical compound C1=CN=C2C(O)=CC=CC2=C1 MCJGNVYPOGVAJF-UHFFFAOYSA-N 0.000 description 1
- 125000002943 quinolinyl group Chemical group N1=C(C=CC2=CC=CC=C12)* 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 238000005215 recombination Methods 0.000 description 1
- 230000006798 recombination Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- YYMBJDOZVAITBP-UHFFFAOYSA-N rubrene Chemical compound C1=CC=CC=C1C(C1=C(C=2C=CC=CC=2)C2=CC=CC=C2C(C=2C=CC=CC=2)=C11)=C(C=CC=C2)C2=C1C1=CC=CC=C1 YYMBJDOZVAITBP-UHFFFAOYSA-N 0.000 description 1
- 125000005920 sec-butoxy group Chemical group 0.000 description 1
- 125000002914 sec-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- 230000008313 sensitization Effects 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 125000004213 tert-butoxy group Chemical group [H]C([H])([H])C(O*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- PCCVSPMFGIFTHU-UHFFFAOYSA-N tetracyanoquinodimethane Chemical compound N#CC(C#N)=C1C=CC(=C(C#N)C#N)C=C1 PCCVSPMFGIFTHU-UHFFFAOYSA-N 0.000 description 1
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 1
- 229910001887 tin oxide Inorganic materials 0.000 description 1
- 229910052723 transition metal Inorganic materials 0.000 description 1
- 150000003624 transition metals Chemical class 0.000 description 1
- TVIVIEFSHFOWTE-UHFFFAOYSA-K tri(quinolin-8-yloxy)alumane Chemical compound [Al+3].C1=CN=C2C([O-])=CC=CC2=C1.C1=CN=C2C([O-])=CC=CC2=C1.C1=CN=C2C([O-])=CC=CC2=C1 TVIVIEFSHFOWTE-UHFFFAOYSA-K 0.000 description 1
- 125000002023 trifluoromethyl group Chemical group FC(F)(F)* 0.000 description 1
- 238000001771 vacuum deposition Methods 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
- 125000005023 xylyl group Chemical group 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- YVTHLONGBIQYBO-UHFFFAOYSA-N zinc indium(3+) oxygen(2-) Chemical compound [O--].[Zn++].[In+3] YVTHLONGBIQYBO-UHFFFAOYSA-N 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
- GWDUZCIBPDVBJM-UHFFFAOYSA-L zinc;2-(2-hydroxyphenyl)-3h-1,3-benzothiazole-2-carboxylate Chemical compound [Zn+2].OC1=CC=CC=C1C1(C([O-])=O)SC2=CC=CC=C2N1.OC1=CC=CC=C1C1(C([O-])=O)SC2=CC=CC=C2N1 GWDUZCIBPDVBJM-UHFFFAOYSA-L 0.000 description 1
- QEPMORHSGFRDLW-UHFFFAOYSA-L zinc;2-(2-hydroxyphenyl)-3h-1,3-benzoxazole-2-carboxylate Chemical compound [Zn+2].OC1=CC=CC=C1C1(C([O-])=O)OC2=CC=CC=C2N1.OC1=CC=CC=C1C1(C([O-])=O)OC2=CC=CC=C2N1 QEPMORHSGFRDLW-UHFFFAOYSA-L 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D213/00—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members
- C07D213/02—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members
- C07D213/04—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom
- C07D213/60—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
- C07D213/72—Nitrogen atoms
- C07D213/74—Amino or imino radicals substituted by hydrocarbon or substituted hydrocarbon radicals
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F15/00—Compounds containing elements of Groups 8, 9, 10 or 18 of the Periodic Table
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D413/00—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and oxygen atoms as the only ring hetero atoms
- C07D413/02—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and oxygen atoms as the only ring hetero atoms containing two hetero rings
- C07D413/04—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and oxygen atoms as the only ring hetero atoms containing two hetero rings directly linked by a ring-member-to-ring-member bond
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D417/00—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for by group C07D415/00
- C07D417/02—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for by group C07D415/00 containing two hetero rings
- C07D417/04—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for by group C07D415/00 containing two hetero rings directly linked by a ring-member-to-ring-member bond
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F15/00—Compounds containing elements of Groups 8, 9, 10 or 18 of the Periodic Table
- C07F15/0006—Compounds containing elements of Groups 8, 9, 10 or 18 of the Periodic Table compounds of the platinum group
- C07F15/0033—Iridium compounds
-
- 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
-
- 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
- H10K85/30—Coordination compounds
- H10K85/341—Transition metal complexes, e.g. Ru(II)polypyridine complexes
- H10K85/342—Transition metal complexes, e.g. Ru(II)polypyridine complexes comprising iridium
-
- 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
- C09K2211/1033—Heterocyclic compounds characterised by ligands containing one nitrogen atom as the heteroatom with oxygen
-
- 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
- C09K2211/1037—Heterocyclic compounds characterised by ligands containing one nitrogen atom as the heteroatom with sulfur
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- 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
- C09K2211/18—Metal complexes
- C09K2211/185—Metal complexes of the platinum group, i.e. Os, Ir, Pt, Ru, Rh or Pd
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K2101/00—Properties of the organic materials covered by group H10K85/00
- H10K2101/10—Triplet emission
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S428/00—Stock material or miscellaneous articles
- Y10S428/917—Electroluminescent
Definitions
- the present invention relates to a novel organometallic complex.
- it relates to an organometallic complex that can convert a triplet excited state into light emission.
- the present invention relates to an electroluminescent material using the organometallic complex.
- the present invention is an electroluminescent device comprising: an anode; a cathode; and a layer containing an organic compound capable of emitting light by applying an electric field (hereinafter, referred to as an “electroluminescent layer”).
- the present invention relates to an electroluminescent device using a complex. Background art
- organic compound organic molecule becomes energized (excited) when it absorbs light.
- Various reactions photochemical reactions
- luminescence luminescence
- Non-Patent Document 1 As an example of the photochemical reaction, there is a reaction (addition of oxygen) of singlet oxygen with an unsaturated organic molecule (for example, see Non-Patent Document 1). Oxygen molecules have a ground state in the triplet state. Singlet state oxygen (singlet oxygen) is not produced by direct photoexcitation. However, singlet oxygen is produced in the presence of other triplet excited molecules. And can lead to an oxygenation reaction. At this time, the compound capable of forming the aforementioned triplet excited molecule is called a photosensitizer.
- Non-patent document 1 Haruo Inoue, 3 others, Basic Chemistry Course Photochemistry I (Maruzen Co., Ltd.), 106-6-110
- a photosensitizer that can form triplet excited molecules by photoexcitation is required.
- the ground state of a normal organic compound is a singlet state, photoexcitation to a triplet excited state becomes a forbidden transition, and triplet excited molecules are hardly generated (normally, singlet excited molecules are generated). Therefore, as such a photosensitizer, a compound that easily causes an intersystem crossing from a singlet excited state to a triplet excited state (or a compound that allows a forbidden transition that is directly photoexcited to the triplet excited state) Is required. In other words, such a compound can be used as a photosensitizer and can be said to be useful.
- Phosphorescence is light emission caused by transition between energies having different multiplicities.
- phosphorescence refers to light emission that occurs when returning from a triplet excited state to a singlet ground state.
- Light emission when returning from the singlet excited state to the singlet ground state is called fluorescence.
- a compound capable of emitting phosphorescence that is, a compound capable of converting a triplet excited state into light emission (hereinafter, referred to as a “phosphorescent compound”)
- an electroluminescent element using an organic compound as a light-emitting compound is mentioned. I can do it.
- This electroluminescent device has been receiving attention as a next-generation flat panel display device because of its characteristics such as thinness and lightness, high-speed response, and low-voltage DC drive. It is a chair. In addition, since it is a self-luminous type and has a wide viewing angle, it has relatively good visibility, and is considered to be effective as an element used for a display screen of a portable device.
- the light emitting mechanism of the electroluminescent element is a carrier injection type. In other words, when a voltage is applied across the electroluminescent layer between the electrodes, electrons injected from the cathode and holes injected from the anode recombine in the electroluminescent layer to form excited molecules, which are then excited. When the molecule returns to the ground state, it emits energy and emits light.
- S * singlet excited state
- T * triplet excited state
- Non-Patent Document 2 Tetsuo Tsutsui, JSAP, Organic Molecules and Bioelect Enix Subcommittee 3rd Workshop Text, 3 1-3 7 (1993)
- Non-Patent Document 3 D.F.O'Brien, 3 others, Applied Physics Letters, vol. 74, No. 3, 442-444 (19999)
- Non-Patent Document 4 Tetsuo Tsutsui, 8 others, Japanese Journal of Applied Physics, v.l. 38, L1502 -L1504 (19999)
- Non-Patent Document 3 uses a borfurin complex having platinum as a central metal
- Non-Patent Document 4 uses an organometallic complex having iridium as a central metal. Both complexes are phosphorescent compounds.
- a layer containing an organometallic complex having iridium as a central metal (hereinafter referred to as an “iridium complex”) and a layer containing DCM2, which is a known fluorescent compound, are alternately stacked to form an iridium complex.
- the triplet excitation energy can be transferred to DCM 2 to contribute to the emission of DCM 2 (for example, see Non-Patent Document 5).
- the amount of the singlet excited state of DCM2 (usually 25% or less) is amplified as compared with the normal case, so that the luminous efficiency of DCM2 increases. This can be said to be a sensitizing effect of the iridium complex which is a phosphorescent compound.
- Non-Patent Document 5 MA Pardo, 2 outsiders, Neyichi (London), V o 1.403, 750-753 (2 000)
- an electroluminescent device using a phosphorescent compound can achieve higher luminous efficiency than before (that is, high luminance can be achieved with a small current). Therefore, electroluminescent devices using phosphorescent compounds are expected to occupy a large weight in future development as a technique for achieving high luminance emission and high luminous efficiency.
- a phosphorescent compound easily causes intersystem crossing and easily emits light (phosphorescence) from a triplet excited state, it can be used as a photosensitizer or used in an electroluminescent device as a phosphorescent material. It is a useful and expected compound, but the number is small.
- the iridium complex used in Non-Patent Documents 4 and 5 is a kind of organometallic complex called an orthomethyl complex.
- This complex has a phosphorescence lifetime of several hundred nanoseconds and a high phosphorescence quantum yield.As compared with the porphyrin complex described above, the decrease in efficiency with an increase in luminance is small, so that this complex is effective in electroluminescent devices. is there. In this sense, such an organometallic complex is one guideline for synthesizing a compound that is likely to cause direct photoexcitation to a triplet excited state or intersystem crossing, and thus a phosphorescent compound.
- Non-Patent Documents 4 and 5 The structure of the ligand of the iridium complex used in Non-Patent Documents 4 and 5 is relatively simple, and emits green light with good color purity.However, in order to change the emission color to another color, It is necessary to change the structure of the ligand. For example, in Non-Patent Document 6, various ligands and iridium complexes using the ligands have been synthesized, and several luminescent colors have been realized.
- Non-Patent Document 6 M. Thompson, 10 others, 10th Interview Null Workshop on Organic and Organic Electoluminescence (EL, 00), 35-38
- EL Organic and Organic Electoluminescence
- organometallic complexes are generally easy to decompose, and even those that are difficult to decompose have never high decomposition temperatures. In other words, it has poor heat resistance, and thus poses a problem when applied to electronic devices such as electroluminescent devices.
- an object of the present invention is to provide a novel organometallic complex which can be obtained in a high yield by using a ligand which is easy to synthesize.
- another object is to provide a novel organometallic complex having excellent heat resistance.
- Another object is to provide an electroluminescent element with high light emission efficiency by manufacturing an electroluminescent element using the organometallic complex. Further, by manufacturing a light emitting device using the electroluminescent element, a light emitting device with low power consumption The task is to provide Disclosure of the invention
- an organometallic complex which forms a 6-membered ring with a central metal is obtained by subjecting a ligand represented by the following general formula (12) to a cyclometallation reaction with a central metal raw material. I discovered that it can be synthesized.
- the constitution of the present invention provides an organometallic complex having a partial structure represented by the following general formula (1).
- R 1 to R 7 may be the same or different, respectively, a hydrogen atom, a halogen atom, or a lower alkyl group, or an alkoxy group, or an acyl group, Or a nitro group, or a cyano group, or an amino group, or a dialkylamino group, or a diarylamino group, or a bier group which may have a substituent, or an aryl group which may have a substituent, or a substituent. Or a heterocyclic residue which may be present.
- R 1 and R 2, R 2 and R 3, R 4 and R 5, and R 5 and R 6 may be bonded to each other to form an aromatic ring.
- X represents an oxygen atom or a sulfur atom.
- Y represents a heterocyclic residue containing a nitrogen atom as a hetero atom.
- M represents a Group 9 atom or a Group 10 atom.
- Another aspect of the present invention is to provide an organometallic complex represented by the following general
- R 1 to R 7 may be the same or different, and each represents a hydrogen atom, a halogen atom, or a lower alkyl group, or an alkoxy group, or an acyl group, or a nitro group, or a cyano group, or an amino group, or Any of a dialkylamino group, a diarylamino group, a vinyl group which may have a substituent, or an aryl group which may have a substituent, or a heterocyclic residue which may have a substituent R 1 and R 2, R 2 and R 3, R 4 and R 5,
- R 5 and R 6 may be bonded to each other to form an aromatic ring.
- X is Represents an oxygen atom or a sulfur atom.
- Y represents a heterocyclic residue containing a nitrogen atom as a hetero atom.
- L is a monoanionic bidentate chelate ligand having a beta-diketone structure, a monoanionic bidentate chelate ligand having a lipoxyl group, or a monoanionic bidentate bidentate having a phenolic hydroxyl group. Represents either a ligand or a chelating ligand.
- organometallic complexes have the advantage that the ligand represented by the above general formula (12) can be synthesized very easily, and can be synthesized at low cost. Also, the yield is good.
- the heterocyclic residue Y in the general formulas (1) and (2) may be a 5-membered ring such as a 2-pyridyl group, a 2-oxazolyl group, a 2-thiazolyl group, or the like, from the viewpoint of a steric structure. It is preferably a 6-membered heterocyclic residue.
- a 2-pyridyl group is preferable because of easy synthesis.
- a more preferred configuration of the present invention is to provide an organometallic complex having a partial structure represented by the following general formula (3).
- Still another preferred embodiment of the present invention provides an organometallic complex represented by the following general formula (4).
- X represents an oxygen atom or a sulfur atom.
- M represents a Group 9 atom or a Group 10 atom.
- n 2
- M is a Group 10 atom
- Is n, and L is a monoanionic bidentate chelate ligand having a beta-diketone structure
- a monoanionic bidentate chelate ligand having a lipoxyl group or a monoanionic chelate ligand having a phenolic hydroxyl group.
- the present inventors have found that the organometallic complex of the present invention can emit phosphorescence.
- a heavy metal is more preferable as the central metal from the viewpoint of the heavy atom effect. Therefore, the present invention is characterized in that the central metal is a iridium atom or a platinum atom.
- X is more preferably oxygen.
- the ligand L is a monoanionic bidentate chelate ligand having a beta-diketone structure or a monoanionic bidentate chelate having a carboxyl group. Or a monoanionic bidentate chelating ligand having a phenolic hydroxyl group.
- any of the monoanionic bidentate chelating ligands represented by the following structural formulas (5) to (11) is preferable. These monoanionic bidentate chelate ligands are effective because they have high coordination ability and can be obtained at low cost.
- the present invention includes an electroluminescent device using the organometallic complex of the present invention.
- the organometallic complex of the present invention is used as a substance for inducing a sensitizing effect as described in Non-Patent Document 5, or as a carrier for a hole transport layer or the like. It may be used as a substance in the transport layer, but its use as a light emitter is effective in terms of luminous efficiency. Therefore, the present invention is characterized by an electroluminescent device using the organometallic complex of the present invention as a light emitting body.
- the present invention includes a light emitting device using the electroluminescent element of the present invention.
- a light-emitting device in this specification refers to an image display device or a light-emitting device using an electroluminescent element as a light-emitting element.
- a connector for example, an anisotropic conductive film (FPC: Flexible Printed Circuit), TAB (Tape Automated Bonding) tape or TCP (Tape Carrier Package) is attached to the electroluminescent element.
- FPC Flexible Printed Circuit
- COG Chip On G 1 ass
- FIG. 1 is a diagram illustrating an element structure of the electroluminescent element according to the first embodiment.
- FIG. 2 is a diagram illustrating an element structure of an electroluminescent element according to Embodiment 2.
- FIG. 3 is a diagram illustrating an element structure of the electroluminescent element according to the third embodiment.
- FIG. 4 is a diagram illustrating a light emitting device.
- FIG. 5 is a diagram illustrating an electric appliance.
- FIG. 6 is a diagram showing a UV-Vis absorption spectrum of the organometallic complex of the present invention.
- FIG. 7 is a diagram showing a luminescence spectrum of the organometallic complex of the present invention.
- FIG. 8 shows a UV-Vis absorption spectrum and an emission spectrum of the organometallic complex of the present invention.
- FIG. 9 is a diagram showing a UV-Vis absorption spectrum and an emission spectrum of the organometallic complex of the present invention.
- FIG. 10 is a diagram showing characteristics of the electroluminescent device of the present invention.
- FIG. 11 is a diagram showing a light emitting spectrum of the electroluminescent device of the present invention.
- the ligand represented by the following general formula (12) can be synthesized, for example, by the following synthesis scheme (a) in which a phenothiazine derivative A and an iodinated compound B of a heterocyclic compound are reacted.
- the synthesis method is not limited to this.
- R 1 to R 7 may be the same or different and each represents a hydrogen atom, a halogen atom, a lower alkyl group, an alkoxy group, an acyl group, or Nitro group, or cyano group, or amino group, or dialkylamino group, or diarylamino group, or a vinyl group which may have a substituent, or an aryl group which may have a substituent, or a substituent Or a heterocyclic residue which may have R 1 and R 2, R 2 and R 3 R 4, R 5 R 5 and R 6 may be bonded to each other to form an aromatic ring.
- lower alkyl groups include methyl group, ethyl group, 11-propyl group, isopropyl group, n-butyl group, sec-butyl group, tert-butyl group, hexyl group, etc.
- it may be an alkyl halide group such as a trifluoromethyl group or a cycloalkyl group such as a cyclohexyl group.
- alkoxy group include a methoxy group, an ethoxy group, an n-propoxy group, an isopropoxy group, an n-butoxy group, a sec-butoxy group, a tert-butoxy group, and a hexoxy group.
- acetyl group an acetyl group or the like can be used.
- dialkylamino group examples include a dimethylamino group and a getylamino group, and those having an alkyl chain having 1 to 4 carbon atoms are preferable.
- diarylamino group examples include a diphenylamino group and a bis (hydroxynaphthyl) amino group, and may be a substituted arylamino group such as a bis (m-tolyl) amino group.
- the vinyl group may be a vinyl group having a substituent such as a diphenylvinyl group.
- aryl groups include unsubstituted aryl groups such as phenyl and naphthyl, o-tolyl, m-tolyl, p-tolyl, xylyl, methoxyphenyl, ethoxyphenyl, and fluorophenyl groups. And the like.
- heterocyclic residue include a pyridyl group, a furyl group and a phenyl group.
- X represents an oxygen atom or a sulfur atom.
- the heterocyclic residue Y may be a polycyclic group such as a 2-benzoxazolyl group, but in consideration of a steric structure which is easily coordinated without hindering coordination to a metal, a 5-membered ring or a 6-membered ring is preferred.
- a membered heterocyclic residue is preferred. Specific examples include a 2-pyridyl group, a 4-pyrimidyl group, a 2-year-old xazolyl group, and a 2-thiazolyl group.
- More specific examples of the ligand represented by the above general formula (12) include 10- (2-pyridyl) phenothiazine, 10- (2-pyridyl) -1,3,7-dimethyl phenothia Gin, 10— (2-pyridyl) —4,6-dimethylphenothiazine, 10— (2-pyridyl) -1,3,7-dimethoxyphenothiazine, 10— (2-pyridyl) —3,7— Bis (dimethylamino) phenothiazine, 10- (2-pyridyl) -1,3,7-bis (diphenylamino) phenothiazi 10- (2-pyridyl) — 3,7-bis (diphenylvinyl) phenothiazine, 10— (2-pyridyl) dibenzo [c] [h] —phenothiazine, 10— (2-oxazolyl) phenothiazine , 10—
- the organometallic complex of the present invention having a partial structure represented by the following general formula (1) is formed using the ligand (12) as described above.
- R 1 to R 7, X, and Y in the following general formula (1) are the same as R 1 to R 7, X, and Y in the general formula (1 2) for the ligand described above.
- M represents a Group 9 atom or a Group 10 atom, specifically, a platinum atom, an iridium atom, or the like.
- R 1 to R 7, X, and Y in the following general formula (2) are the same as R 1 to R 7, X, and Y in the general formula (1 2) for the ligand described above.
- a known synthesis method may be used.
- a known synthesis method may be used.
- hydrate of iridium chloride is used as the central metal raw material, and the above-mentioned general formula (12) is used.
- a chlorine-bridged dinuclear complex is synthesized by heating under reflux in a nitrogen atmosphere after mixing with a ligand (synthesis scheme (b) below).
- L is a monoanionic bidentate chelate ligand having a diketone structure, a monoanionic bidentate chelate ligand having a carbonyl group, or a monoanionic bidentate chelate having a phenolic hydroxyl group.
- organometallic complex of the present invention thus obtained include, for example, the following structural formulas (13) to (20).
- the organometallic complex of the present invention is not limited to these.
- the structural formulas (16) and (20) disclose a trans type, but may be a cis type.
- a ligand that forms an orthometal instead of the above-mentioned bidentate chelating ligand L ((Structural formulas (21) to (24))
- 2-phenylpyridine may be used.
- These organometallic complexes can be synthesized via the product of the above-mentioned reaction formula (c).
- the organometallic complex of (21) can be obtained by reacting the above-mentioned structural formula (13) with 2-phenylpyridine, wherein the platinum cyclometal complex forms a cis-form.
- the structural formulas (22) and (24) disclose the cis-form, but the trans-form may be used.
- organometallic complexes (25) to (28) a configuration using the same ligand may be adopted. Even with these organometallic complexes, they can be synthesized via the product of the above-mentioned reaction formula (c).
- the organometallic complex represented by the structural formula (25) can be obtained by reacting the structural formula (13) described above with 10- (2-pyridyl) phenothiazine.
- structural formulas (26) and (28) disclose the cis-form, but the trans-form
- the organometallic complex of the present invention described above is used as a photosensitizer ⁇ phosphorescent material
- the electroluminescent device according to the present invention basically includes an electroluminescent layer (including at least a light emitting layer, a hole injection layer, and a hole) including the above-described organometallic complex according to the present invention between a pair of electrodes (anode and cathode).
- a transport layer, a light-emitting layer, a hole blocking layer, an electron transport layer, and an electron injection layer is used as a photosensitizer ⁇ phosphorescent material.
- the material other than the organometallic complex of the present invention used for the electroluminescent layer a known material can be used, and either a low molecular material or a high molecular material can be used.
- the material for forming the electroluminescent layer includes not only a material composed of only an organic compound material but also a structure partially including an inorganic compound.
- an electroluminescent device having a light-emitting layer containing the organometallic complex of the present invention, a hole injection layer, a hole transport layer, a hole blocking layer, and an electron transport layer made of a low molecular weight material
- a first electrode 101 is formed on a substrate 100
- an electroluminescent layer 102 is formed on the first electrode 101
- a second electrode 101 is formed thereon. Is formed.
- any material used for a conventional electroluminescent element may be used, and for example, a material made of glass, quartz, transparent plastic, or the like can be used.
- the first electrode 101 in Embodiment 1 functions as an anode
- the second electrode 103 functions as a cathode.
- the first electrode 101 is formed of an anode material.
- the anode material that can be used here include metals, alloys, and electrically conductive compounds having a large work function (work function of 4.0 eV or more). It is preferable to use a mixture of these.
- Specific examples of the anode material include IT ⁇ (Indium Tin Oxide) and IZO (Indiurn Z inc Oxide) in which 2 to 20% of zinc oxide (ZnO) is mixed with indium oxide.
- Au gold
- platinum Pt
- Ni nickel
- tungsten W
- Cr chromium
- Mo molybdenum
- Fe iron
- Co cobalt
- Cu copper
- Pd palladium
- TiN a nitride of a metal material
- the cathode material used for forming the second electrode 103 a metal alloy having a low work function (work elongation of 3.8 eV or less), a metal alloy, an electrically conductive compound, and a mixture thereof can be used. preferable.
- Specific examples of the cathode material include elements belonging to Group 1 or 2 of the periodic table, that is, Al metals such as Li and Cs, and Al metals such as Mg, Ca, and Sr.
- Li earth metals, alloys containing child these (Mg: Ag, a 1: L i) and compound (L i F, C s F , C aF 2) other, using a transition metal containing a rare earth metal
- a transition metal containing a rare earth metal Although it can be formed, it can also be formed by laminating with metals (including alloys) such as Al, Ag, and ITO.
- anode material and cathode material are formed into a thin film by a vapor deposition method, a sputtering method, or the like, so that the first electrode 101 and the second electrode Form 103.
- the thickness is preferably 10 to 500 nm.
- the electroluminescent element of the present invention light generated by recombination of carriers in the electroluminescent layer is emitted outside from one or both of the first electrode 101 and the second electrode 103. . That is, when light is emitted from the first electrode 101, the first electrode 101 is formed of a light-transmitting material, and when light is emitted from the second electrode 103 side. It is assumed that the second electrode 103 is formed of a light-transmitting material.
- the electroluminescent layer 102 is formed by laminating a plurality of layers.
- the hole injection layer 111, the hole transport layer 112, the light emitting layer 113, and the hole blocking 14, and the electron transport layer 115 are laminated.
- a phthalocyanine-based compound As a hole injection material for forming the hole injection layer 111, a phthalocyanine-based compound is effective.
- phthalocyanine abbreviation: H 2 P c
- Dofu evening Roshianin abbreviation: C u P c
- C u P c Dofu evening Roshianin
- an aromatic amine-based compound that is, a compound having a benzene ring-nitrogen bond
- Widely used materials include, for example, 4,4,1-bisCN- (3-methylphenyl) -N-phenylamino] -biphenyl (abbreviation: TPD) and its derivatives 4,4'- Bis [N— (1-naphthyl) -1-N-phenylamino] -biphenyl (abbreviation: a—NPD) or 4, 4 ', 4''-tris (N, N-diphenylamino) —Triphenylamine (abbreviation: TDATA), 4, 4 ', 4''tris [N— (3-methylphenyl) —N-phenyl-amid [N] mono-triphenylamine (abbreviation: MTDATA) and the like.
- TPD 4,4,1-bisCN- (3-methylphenyl) -N-phenylamino] -b
- the light-emitting layer 113 contains the organometallic complex of the present invention, and is formed, for example, by co-evaporation with a host material.
- a host material such as 4,4′-bis (N-carpazolyl) -piphenyl (abbreviation: CBP), 2,2,2 ”— (1,3,5-benzenetrif. 1) tris [1-phenyl-1H-benzimidazole] (abbreviation: TPBI), etc.
- the light-emitting layer 113 is formed of a layer comprising only the organometallic complex of the present invention. May be.
- Examples of hole blocking materials for forming the hole blocking layer 114 include bis (2-methyl-18-quinolinolato) -14-phenylphenolate aluminum (abbreviation: BA lq), 1,3-bis [5- (p-tert-butylphenyl) — 1,3,4_oxaziazol-1-yl] benzene (abbreviation: OX D-7), 3 -— (4-tert-butylphenyl) 1-4-phenyl 5- (4-biphenylyl) 1,1,2,4-triazol (abbreviation: TAZ), 3- (4-tert-butylphenyl) 1-4- (4-ethylphenyl) — 5 -— (4-piphenyl) Niryl) 1,1,2,4-triazole (abbreviation: p-Et TAZ), pasofenanthone phosphorus (abbreviation: BPhen), pasocuproine (abbreviation: BCP), and the like can be used.
- the light emitting layer 113 containing the organometallic complex of the present invention, the hole injection layer 111 made of a low molecular material, the hole transport layer 112, the hole blocking layer 114, and the electron transport layer 111 are formed. 5 can be formed.
- Embodiment 1 is an electroluminescent element that emits light emitted from the organometallic complex of the present invention.
- Embodiment 2 describes an element configuration of an electroluminescent device having a light emitting layer containing the organometallic complex of the present invention and a hole injection layer made of a polymer material, and forming these by a wet process. This will be described using 2.
- the substrate 200, the first electrode 201, and the second electrode 203 can be formed in the same manner using the same material as that in Embodiment Mode 1; The description is omitted.
- the electroluminescent layer 202 is formed by stacking the hole injection layer 211 and the light emitting layer 212.
- Examples of the hole injection material for forming the hole injection layer 211 include polyethylene dioxythiophene (abbreviation: PEDOT) doped with polystyrene sulfonate (abbreviation: PSS) and tetracyanoquinodimethane (abbreviation: For example, polyaniline (abbreviation: PAni) or polyvinylcarbazole (abbreviation: PVK) doped with axepane such as TCNQ) can be used.
- PEDOT polyethylene dioxythiophene
- PSS polystyrene sulfonate
- PVK polyvinylcarbazole
- the light emitting layer 212 includes the organometallic complex of the present invention as a guest material.
- the host material may be a bipolar material, but may be a bipolar material by mixing a hole transporting material and an electron transporting material.
- a hole-transporting polymer compound for example, PVK
- the above-mentioned electron transporting material for example, PBD
- a light-emitting layer 212 can be obtained by preparing a solution to which an appropriate amount (approximately 5 wt%) has been added and wet-coating this solution.
- an electroluminescent device having the light emitting layer 212 containing the organometallic complex of the present invention and the hole injection layer 211 made of a polymer material, and forming these by a wet process. it can.
- Embodiment 2 is an electroluminescent element that emits light emitted from the organometallic complex of the present invention.
- Embodiment 3 two types of organic metal complexes of the present invention and fluorescent compounds are used.
- the element configuration of an electroluminescent element having a light emitting layer containing a strike material and a hole injection layer, a hole transport layer, a hole blocking layer, and an electron transport layer made of a low molecular material will be described with reference to FIG.
- the substrate 300, the first electrode 301, the second electrode 303, the hole injection layer 311, the hole transport layer 312, the hole blocking layer 314, and the electron transport layer 315 Since it can be formed in the same manner by using the same material as in Embodiment Mode 1, the description is omitted.
- the electroluminescent layer 302 is formed by stacking a hole injection layer 311, a hole transport layer 312, a light emitting layer 313, a hole blocking layer 314, and an electron transport layer 315. It is formed.
- the light-emitting layer 313 of the present embodiment includes a host material, an organometallic complex of the present invention as a first guest material, and a fluorescent compound as a second guest material.
- a host material the material described in Embodiment 1 may be used.
- a known fluorescent compound can be used as the second guest material.
- DCM1, DCM2, DCJTB, quinacridone, N, N-dimethylquinacridone, rubrene, perylene, DPT, Co-6, PMD FB, BTX, ABTX, etc. can be used.
- the organometallic complex of the present invention which is the first guest material, functions as a substance causing a sensitization effect in the light-emitting layer 3 13, and the second guest material
- the amount of the singlet excited state of the fluorescent compound is amplified. Therefore, the electroluminescent device of Embodiment 3 is a light emitting device that emits light emitted from a fluorescent compound and emits light at a luminous efficiency. Can be improved as compared with the electroluminescent device using the fluorescent compound of (1).
- Step 2 dinuclear complex Synthesis of ([I r (ppt) 2 C 1] 2)]
- Step 3 Synthesis of the organometallic complex of the present invention (Ir (ppt) 2 (acac))].
- Fig. 6 shows the absorption vector of I r (ppt) 2 (acac) in dichlorobenzene.
- the absorption spectrum of ligand ppt is also shown.
- the ligand ppt has absorption peaks around 280 nm and 300 nm.
- the organometallic complex Ir (pt) 2 (acac) of the present invention has absorption peaks at four places around (1) 300 nm, (2) 350 nm, (3) 380 nm, and (4) 425 nm. have.
- the absorption peak (1) almost coincides with the absorption of the ligand ppt, and is a singlet ⁇ -transition caused by the ligand.
- the absorption peaks of (2), (3), and (4) are the absorptions specific to organometallic complexes often found in orthometal complexes, etc., and include singlet ML CT transition, triplet ⁇ -7T * transition, and triplet It is presumed that it corresponds to the term MLC ⁇ transition.
- the absorption peak of (4) has a prominent tail in the visible region, and is considered to be an absorption spectrum peculiar to the triplet MLCT transition. That is, I r (ppt) 2 (acac) was found to be a compound capable of direct photoexcitation to triplet excited states and intersystem crossing.
- FIG. 7 shows the emission spectrum (photoluminescence) of the Ir (ppt) 2 (acac) powder.
- the excitation light was 365 nm. As shown in FIG. 7, it emitted green light having an emission peak at 520 nm at room temperature.
- Fig. 6 Considering the vector, it is considered to be phosphorescence emission.
- Step 2 dinuclear complex Synthesis of ([I r (p) 2 C 1] 2)]
- FIG. 8 shows an absorption spectrum and an emission spectrum (photoluminescence) of Ir (p px) 2 (acac) in dichloromethane.
- the organometallic complex I r (ppx) 2 (acac) of the present invention has absorption peaks at 256 nm, 314 nm, 348 nm and 410 nm, and as in Synthesis Example 1, ortho-metal complexes, etc. Had an absorption spectrum peculiar to the organometallic complex, which is often seen in the above. Further, the emission spectrum had a peak at 524 nm, and emitted green light.
- Figure 9 shows the vector and emission spectrum (photoluminescence).
- the organometallic complex I r (pp X) 2 (ic) of the present invention has absorption peaks at 226 nm, 314 nm, 338 nm, and 396 nm. It exhibited an absorption spectrum peculiar to the organometallic complex often seen.
- the emission spectrum had a peak at 551 nm, and emitted yellow-green light.
- the organic metal complex of the present invention (I r (ppx) 2 (acac)) represented by the above structural formula (17) obtained in Synthesis Example 2 was used as a light emitter, and Are specifically exemplified.
- the structure shown in Fig. 1 was applied as the element structure, and the vacuum deposition method was used as the film formation method.
- the first electrode 10
- the second electrode 103 is a cathode.
- the first electrode 101 a substrate 100 on which 110 nm of tin oxide (ITO) is formed is used.
- the size of the first electrode 101 was 2 mm square.
- a 20-nm-thick CuPc film was formed as the hole-injecting layer 111, and then a 30-nm film of ⁇ -NPD was formed as the hole-transporting layer 112.
- a light emitting layer 113 was formed on the hole transporting layer 112 to a thickness of 3 O nm by co-evaporation of CBP and Ir (ppx) 2 (acac). At this time, the deposition rate was adjusted so that Ir (ppx) 2 (acac) was contained in the light emitting layer 113 at about 8 wt%.
- BCP is 10 nm
- the electron transport layer is The A 1 Q 3 20 nm as 115, were sequentially formed. The above corresponds to the electroluminescent layer 102.
- a second electrode 103 was formed by depositing calcium fluoride at 2 nm and aluminum at 10 Onm.
- FIG. 10 shows the device characteristics of this example.
- Fig. 10 (a) is the luminance-voltage characteristic
- Fig. 10 (b) is the luminance-current density characteristic
- Fig. 10 (c) is the current efficiency-luminance characteristic.
- a voltage of 7.0 V was applied, current flowed at a current density of 0.694 mA / cm 2 , and the device emitted light at a luminance of 118 cdZm 2 .
- the current efficiency at this time was 17. O cd / A, and the external quantum efficiency was about 5.5%. Therefore, high efficiency was obtained, far exceeding that of electroluminescent devices that utilize light emission (fluorescence) from the singlet excited state. This is presumably because the electroluminescent device of the present invention emits light (phosphorescence) from a triplet excited state.
- FIG. 11 shows an emission spectrum of the electroluminescent device of this example. As shown in FIG. 11, green light emission having a peak at about 520 nm was obtained. This is almost the same as the emission spectrum of Ir (ppx) 2 (acac) in the solution shown in FIG. 8, and it is clear that Ir ( ⁇ ) 2 (acac) emits light in this example. It suggests.
- Example 1 a light-emitting device having the electroluminescent element of the present invention in a pixel portion will be described with reference to FIGS.
- FIG. 4A is a top view illustrating the light-emitting device
- FIG. 4B is a cross-sectional view of FIG. 4A cut along AA ′.
- 401 indicated by a dotted line is a source side driving circuit
- 402 is a pixel portion
- 403 is a gate side driving circuit.
- Reference numeral 404 denotes a sealing substrate
- reference numeral 405 denotes a sealant
- an inside surrounded by the sealant 405 is a space 407.
- the routing wiring 408 is a wiring for transmitting signals input to the source side driving circuit 401 and the gate side driving circuit 403, and a video signal from an FPC (flexible printed circuit) 409 serving as an external input terminal. Receives clock signal, start signal, reset signal, etc. Although only the FPC is shown here, a printed wiring board (PWB) may be attached to the FPC.
- the light emitting device in the present specification includes not only the light emitting device main body but also a state in which an FPC or a PWB is attached thereto.
- a drive circuit portion and a pixel portion are formed over the substrate 410.
- a source side drive circuit 401 and a pixel portion 402 which are drive circuit portions are shown.
- the source side driver circuit 401 is a CMOS circuit formed by combining an n-channel TFT 423 and a p-channel TFT 424.
- the TFT forming the drive circuit may be formed by a known CMOS circuit, PMOS circuit, or NMOS circuit.
- a driver integrated with a driver circuit formed on a substrate is shown, but this is not always necessary, and the driver circuit can be formed not on the substrate but outside.
- the pixel portion 402 is formed by a plurality of pixels including a switching TFT 411, a current control TFT 412, and a first electrode 413 electrically connected to a drain of the TFT 412.
- the insulator 4 covers the end of the first electrode 41 3. 14 are formed. Here, it is formed by using a positive photosensitive acrylic resin film.
- a curved surface having a curvature is formed at the upper end or the lower end of the insulator 414.
- a positive photosensitive acrylic is used as the material of the insulator 414
- only the upper end of the insulator 414 may have a curved surface with a radius of curvature (0.2 m to 3 m). I like it.
- the insulator 414 either a negative type which becomes insoluble in an etchant by photosensitive light or a positive type which becomes soluble in an etchant by light can be used.
- An electroluminescent layer 4 16 and a second electrode 4 17 are formed on the first electrode 4 13.
- a material having a high work function as a material used for the first electrode 4 13 functioning as an anode.
- a material having a high work function for the first electrode 4 13 functioning as an anode.
- single-layer films such as ITO (indium tin oxide) film, indium zinc oxide (IZO) film, titanium nitride film, chromium film, tungsten film Zn film, and Pt film
- titanium nitride and aluminum are mainly used.
- a three-layer structure of a titanium nitride film, a film mainly containing aluminum, and a titanium nitride film can be used.
- the electroluminescent layer 416 is formed by an evaporation method using an evaporation mask or an ink jet method.
- the organometallic complex of the present invention is used as a part thereof.
- Other materials that can be used in combination include low molecular weight materials and high molecular weight materials. There may be.
- an organic compound is usually used in a single layer or a stacked layer in many cases. .
- a material used for the second electrode (cathode) 417 formed on the electroluminescent layer 416 a material having a small work function (Al, Ag, Li, Ca, alloy MgAg, Mg ln, a l L i, C a F 2 or C aN) may be used.
- a metal thin film having a reduced thickness and a transparent conductive film (a negative electrode) are used as the second electrode (cathode) '4 17.
- I tO indium oxide-tin oxide alloy
- oxidized indicator ⁇ arm oxide-zinc oxide alloy I n 2 0 3 _Z nO
- the sealing substrate 404 by bonding the sealing substrate 404 to the element substrate 410 with the sealing agent 405, a structure in which the substrate 41 (the sealing substrate 404 and the space 407 surrounded by the sealing agent 405 are provided with the electroluminescent element 418 is provided.
- the space 407 is not only filled with an inert gas (such as nitrogen or argon), but also includes a structure filled with a sealant 405.
- an epoxy resin is preferably used for the sealant 405.
- these materials do not transmit moisture and oxygen as much as possible.
- FRP Fiberred-Reinforced Plastics
- a plastic substrate made of (polypiperfluoride), mylar, polyester, acrylic, or the like can be used. As described above, a light emitting device having the electroluminescent element of the present invention can be obtained.
- Example 1 various electric appliances completed using the light-emitting device having the electroluminescent element of the present invention will be described.
- Examples of electrical appliances manufactured using the light emitting device having the electroluminescent element of the present invention include a video camera, a digital camera, a goggle type display (head mounted display), a navigation system, and a sound reproducing device (power audio, Audio components), notebook personal computers, game consoles, portable information terminals (mobile computers, mobile phones, portable game consoles, electronic books, etc.), and image playback devices equipped with recording media (specifically, digital reproducing recording media such as Basatai Le disk (DVD), shows the specific example of the image device having a display equipment for displaying the), and the like ⁇ these appliances in FIG.
- a video camera a digital camera, a goggle type display (head mounted display), a navigation system, and a sound reproducing device (power audio, Audio components), notebook personal computers, game consoles, portable information terminals (mobile computers, mobile phones, portable game consoles, electronic books, etc.), and image playback devices equipped with recording media (specifically, digital reproducing recording media such as Basatai Le disk (DVD),
- Fig. 5 ( ⁇ ) shows a display device, which includes a housing 5101, a support 5101, a display section 5103, a part of speakers 5104, a video input terminal 5105, etc. .
- the display device is manufactured by using the light emitting device having the electroluminescent element of the present invention for the display portion 5103.
- Display devices include all information display devices for personal computers, TV broadcast reception, and advertisement display.
- Fig. 5 (B) shows a notebook personal computer with a main body 5201, a housing 5202, a display section 5203, a keyport 5204, and an external connection port 5205. , Pointing mouse, etc. Having the electroluminescent device of the present invention
- the light emitting device is manufactured by using a light emitting device for the display portion 5203.
- FIG. 5C shows a mopile computer, which includes a main body 5301, a display portion 5302, a switch 5303, operation keys 5304, an infrared port 5305, and the like. It is manufactured by using the light emitting device having the electroluminescent element of the present invention for the display portion 5302.
- FIG. 5 (D) shows a portable image reproducing device (specifically, a DVD reproducing device) provided with a recording medium, and includes a main body 5401, a housing 5402, a display portion A 5403, a display portion B 5404, a recording medium ( DVD, etc.) Including reading section 5405, operation keys 5406, speaker part 5407, etc.
- the display portion A 5403 mainly displays image information
- the display portion B 5404 mainly displays character information.
- the image reproducing device provided with the recording medium includes a home game machine and the like.
- FIG. 5E shows a goggle type display (head-mounted display), which includes a main body 5501, a display portion 5502, and an arm portion 5503. It is manufactured by using the light emitting device having the electroluminescent element of the present invention for the display portion 5502.
- Figure 5 (F) shows a video camera, with a main unit 560 1, display unit 5602, housing 5603, external connection port 5604, remote control receiving unit 5605, image receiving unit 5606, battery 5607, audio input unit 5608, and operation key 5609. , Eyepiece 5610, etc. It is manufactured by using the light emitting device having the electroluminescent element of the present invention for the display portion 5602.
- Fig. 5 (G) shows a mobile phone, and the main body 5701, rich body 5702, display section 5703, audio input section 5704, audio output section 5705 , Operation keys 570, external connection port 570, antenna 570, etc. It is manufactured by using the light emitting device having the electric field light emitting element of the present invention for the display portion 5703. Note that the display portion 5703 can reduce power consumption of the mobile phone by displaying white characters on a black background.
- the applicable range of the light emitting device having the electroluminescent element of the present invention is extremely wide, and the light emitting device can be applied to electric appliances in various fields. Industrial applicability
- a novel organic metal complex that can be obtained in a high yield by using a ligand that can be easily synthesized.
- a novel organometallic complex having excellent heat resistance can be provided.
- an electroluminescent element using the organometallic complex, an electroluminescent element having high light emission efficiency can be provided. Further, by manufacturing a light-emitting device using the electroluminescent element, a light-emitting device with low power consumption can be provided.
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Crystallography & Structural Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Electroluminescent Light Sources (AREA)
- Nitrogen- Or Sulfur-Containing Heterocyclic Ring Compounds With Rings Of Six Or More Members (AREA)
- Heterocyclic Carbon Compounds Containing A Hetero Ring Having Nitrogen And Oxygen As The Only Ring Hetero Atoms (AREA)
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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JP2004564078A JP4628108B2 (ja) | 2003-02-14 | 2004-02-05 | 有機金属錯体、及び電界発光素子を有する電子機器 |
EP04708459.5A EP1598361B1 (en) | 2003-02-14 | 2004-02-05 | Organic metal complex, electroluminescent material using the complex and ectroluminescent element using the complex |
KR1020057014329A KR101054663B1 (ko) | 2003-02-14 | 2004-02-05 | 유기 금속 착체, 이들 착체를 사용하는 전계 발광 재료 및이들 착체를 사용하는 전계 발광 소자 |
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JP2003035969 | 2003-02-14 | ||
JP2003-035969 | 2003-02-14 | ||
JP2003-188960 | 2003-06-30 | ||
JP2003188960 | 2003-06-30 |
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WO2004081019A1 true WO2004081019A1 (ja) | 2004-09-23 |
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PCT/JP2004/001165 WO2004081019A1 (ja) | 2003-02-14 | 2004-02-05 | 有機金属錯体、前記錯体を用いた電界発光材料および前記錯体を用いた電界発光素子 |
Country Status (6)
Country | Link |
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US (2) | US7041390B2 (ja) |
EP (1) | EP1598361B1 (ja) |
JP (2) | JP4628108B2 (ja) |
KR (1) | KR101054663B1 (ja) |
TW (1) | TWI347349B (ja) |
WO (1) | WO2004081019A1 (ja) |
Cited By (8)
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WO2011024761A1 (ja) | 2009-08-27 | 2011-03-03 | 住友化学株式会社 | 金属錯体組成物及び錯体高分子 |
WO2011024737A1 (ja) | 2009-08-27 | 2011-03-03 | 独立行政法人産業技術総合研究所 | イリジウム錯体ならびに該化合物からなる発光材料 |
WO2015019725A1 (ja) * | 2013-08-09 | 2015-02-12 | 国立大学法人九州大学 | 有機金属錯体、発光材料、遅延蛍光体および有機発光素子 |
JP2016210772A (ja) * | 2015-04-28 | 2016-12-15 | 株式会社半導体エネルギー研究所 | 有機金属錯体、発光素子、発光装置、電子機器及び照明装置 |
US9938309B2 (en) | 2015-12-28 | 2018-04-10 | Semiconductor Energy Laboratory Co., Ltd. | Organometallic complex, light-emitting element, light-emitting device, electronic device, and lighting device |
JP2018198341A (ja) * | 2011-02-16 | 2018-12-13 | 株式会社半導体エネルギー研究所 | 発光装置 |
US10170710B2 (en) | 2015-05-20 | 2019-01-01 | Semiconductor Energy Laboratory Co., Ltd. | Organometallic complex, light-emitting element, light-emitting device, electronic device, and lighting device |
US10256420B2 (en) | 2015-08-31 | 2019-04-09 | Semiconductor Energy Laboratory Co., Ltd. | Organometallic complex, light-emitting element, light-emitting device, electronic device, and lighting device |
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EP1598361B1 (en) * | 2003-02-14 | 2013-05-29 | Semiconductor Energy Laboratory Co., Ltd. | Organic metal complex, electroluminescent material using the complex and ectroluminescent element using the complex |
US7764012B2 (en) * | 2004-04-16 | 2010-07-27 | Semiconductor Energy Laboratory Co., Ltd | Light emitting device comprising reduced frame portion, manufacturing method with improve productivity thereof, and electronic apparatus |
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WO2017053514A1 (en) * | 2015-09-22 | 2017-03-30 | Florida State University Research Foundation, Inc. | Organometal halide perovskite nanoplatelets, devices, and methods |
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- 2004-02-05 JP JP2004564078A patent/JP4628108B2/ja not_active Expired - Fee Related
- 2004-02-05 WO PCT/JP2004/001165 patent/WO2004081019A1/ja active Application Filing
- 2004-02-05 KR KR1020057014329A patent/KR101054663B1/ko active IP Right Grant
- 2004-02-12 US US10/777,519 patent/US7041390B2/en not_active Expired - Lifetime
- 2004-02-13 TW TW093103514A patent/TWI347349B/zh not_active IP Right Cessation
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WO2011024737A1 (ja) | 2009-08-27 | 2011-03-03 | 独立行政法人産業技術総合研究所 | イリジウム錯体ならびに該化合物からなる発光材料 |
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JP2018198341A (ja) * | 2011-02-16 | 2018-12-13 | 株式会社半導体エネルギー研究所 | 発光装置 |
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CN105636949A (zh) * | 2013-08-09 | 2016-06-01 | 国立大学法人九州大学 | 有机金属络合物、发光材料、迟滞荧光体及有机发光元件 |
US9957260B2 (en) | 2013-08-09 | 2018-05-01 | Kyushu University, National University Corporation | Organic metal complex, light emitting material, delayed fluorescent material, and organic light emitting device |
JPWO2015019725A1 (ja) * | 2013-08-09 | 2017-03-02 | 国立大学法人九州大学 | 有機金属錯体、発光材料、遅延蛍光体および有機発光素子 |
WO2015019725A1 (ja) * | 2013-08-09 | 2015-02-12 | 国立大学法人九州大学 | 有機金属錯体、発光材料、遅延蛍光体および有機発光素子 |
US10115912B2 (en) | 2015-04-28 | 2018-10-30 | Semiconductor Energy Laboratory Co., Ltd. | Organometallic complex, light-emitting element, light-emitting device, electronic device, and lighting device |
US10868262B2 (en) | 2015-04-28 | 2020-12-15 | Semiconductor Energy Laboratory Co., Ltd. | Organometallic complex, light-emitting element, light-emitting device, electronic device, and lighting device |
JP2016210772A (ja) * | 2015-04-28 | 2016-12-15 | 株式会社半導体エネルギー研究所 | 有機金属錯体、発光素子、発光装置、電子機器及び照明装置 |
US10170710B2 (en) | 2015-05-20 | 2019-01-01 | Semiconductor Energy Laboratory Co., Ltd. | Organometallic complex, light-emitting element, light-emitting device, electronic device, and lighting device |
US10256420B2 (en) | 2015-08-31 | 2019-04-09 | Semiconductor Energy Laboratory Co., Ltd. | Organometallic complex, light-emitting element, light-emitting device, electronic device, and lighting device |
US9938309B2 (en) | 2015-12-28 | 2018-04-10 | Semiconductor Energy Laboratory Co., Ltd. | Organometallic complex, light-emitting element, light-emitting device, electronic device, and lighting device |
Also Published As
Publication number | Publication date |
---|---|
TWI347349B (en) | 2011-08-21 |
TW200420178A (en) | 2004-10-01 |
JP5171910B2 (ja) | 2013-03-27 |
US20060106211A1 (en) | 2006-05-18 |
US20050006625A1 (en) | 2005-01-13 |
US7176307B2 (en) | 2007-02-13 |
JP4628108B2 (ja) | 2011-02-09 |
KR20050106412A (ko) | 2005-11-09 |
JPWO2004081019A1 (ja) | 2006-06-08 |
KR101054663B1 (ko) | 2011-08-08 |
JP2011016837A (ja) | 2011-01-27 |
EP1598361A1 (en) | 2005-11-23 |
EP1598361B1 (en) | 2013-05-29 |
US7041390B2 (en) | 2006-05-09 |
EP1598361A4 (en) | 2009-08-26 |
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