JP4557651B2 - 発光性銅配位化合物及び有機発光素子 - Google Patents
発光性銅配位化合物及び有機発光素子 Download PDFInfo
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- JP4557651B2 JP4557651B2 JP2004267705A JP2004267705A JP4557651B2 JP 4557651 B2 JP4557651 B2 JP 4557651B2 JP 2004267705 A JP2004267705 A JP 2004267705A JP 2004267705 A JP2004267705 A JP 2004267705A JP 4557651 B2 JP4557651 B2 JP 4557651B2
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- 150000001875 compounds Chemical class 0.000 title claims description 68
- 239000010949 copper Substances 0.000 title claims description 55
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims description 44
- 229910052802 copper Inorganic materials 0.000 title claims description 41
- 239000003446 ligand Substances 0.000 description 47
- 239000010410 layer Substances 0.000 description 36
- 125000004433 nitrogen atom Chemical group N* 0.000 description 22
- 229910052757 nitrogen Inorganic materials 0.000 description 21
- 238000005401 electroluminescence Methods 0.000 description 18
- 125000005843 halogen group Chemical group 0.000 description 16
- 239000000463 material Substances 0.000 description 16
- 230000005281 excited state Effects 0.000 description 15
- 239000000126 substance Substances 0.000 description 15
- 239000000539 dimer Substances 0.000 description 13
- 125000004434 sulfur atom Chemical group 0.000 description 13
- 229910052751 metal Inorganic materials 0.000 description 12
- 239000002184 metal Substances 0.000 description 12
- 125000004437 phosphorous atom Chemical group 0.000 description 12
- 239000007787 solid Substances 0.000 description 12
- 229910052717 sulfur Inorganic materials 0.000 description 12
- 238000000295 emission spectrum Methods 0.000 description 11
- 125000000879 imine group Chemical group 0.000 description 10
- 239000000243 solution Substances 0.000 description 10
- 125000001424 substituent group Chemical group 0.000 description 10
- 229910052698 phosphorus Inorganic materials 0.000 description 9
- JPVYNHNXODAKFH-UHFFFAOYSA-N Cu2+ Chemical compound [Cu+2] JPVYNHNXODAKFH-UHFFFAOYSA-N 0.000 description 8
- 229910001431 copper ion Inorganic materials 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 239000012044 organic layer Substances 0.000 description 7
- 239000000758 substrate Substances 0.000 description 7
- 125000003118 aryl group Chemical group 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 6
- 230000005525 hole transport Effects 0.000 description 6
- 239000000843 powder Substances 0.000 description 6
- 125000000217 alkyl group Chemical group 0.000 description 5
- 238000000921 elemental analysis Methods 0.000 description 5
- 239000010408 film Substances 0.000 description 5
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 5
- 125000004429 atom Chemical group 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- 125000004432 carbon atom Chemical group C* 0.000 description 4
- 230000005283 ground state Effects 0.000 description 4
- 238000004020 luminiscence type Methods 0.000 description 4
- -1 phosphine compound Chemical class 0.000 description 4
- 229920003227 poly(N-vinyl carbazole) Polymers 0.000 description 4
- 238000010791 quenching Methods 0.000 description 4
- 230000000171 quenching effect Effects 0.000 description 4
- 238000004528 spin coating Methods 0.000 description 4
- 238000001308 synthesis method Methods 0.000 description 4
- 238000001771 vacuum deposition Methods 0.000 description 4
- 0 **(*)(*1)**1(N)[Al] Chemical compound **(*)(*1)**1(N)[Al] 0.000 description 3
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 150000004699 copper complex Chemical class 0.000 description 3
- 239000013078 crystal Substances 0.000 description 3
- 125000006165 cyclic alkyl group Chemical group 0.000 description 3
- 125000004122 cyclic group Chemical group 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000000859 sublimation Methods 0.000 description 3
- 230000008022 sublimation Effects 0.000 description 3
- KSGFJKSNZLTEDI-UHFFFAOYSA-N 1-[benzyl(methyl)amino]-3-[3-(trifluoromethyl)phenoxy]propan-2-ol Chemical compound C=1C=CC=CC=1CN(C)CC(O)COC1=CC=CC(C(F)(F)F)=C1 KSGFJKSNZLTEDI-UHFFFAOYSA-N 0.000 description 2
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical group [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 2
- VMQMZMRVKUZKQL-UHFFFAOYSA-N Cu+ Chemical class [Cu+] VMQMZMRVKUZKQL-UHFFFAOYSA-N 0.000 description 2
- XYFCBTPGUUZFHI-UHFFFAOYSA-N Phosphine Natural products P XYFCBTPGUUZFHI-UHFFFAOYSA-N 0.000 description 2
- 229920001609 Poly(3,4-ethylenedioxythiophene) Polymers 0.000 description 2
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical group C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 2
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000007810 chemical reaction solvent Substances 0.000 description 2
- MVPPADPHJFYWMZ-UHFFFAOYSA-N chlorobenzene Chemical compound ClC1=CC=CC=C1 MVPPADPHJFYWMZ-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- IBHBKWKFFTZAHE-UHFFFAOYSA-N n-[4-[4-(n-naphthalen-1-ylanilino)phenyl]phenyl]-n-phenylnaphthalen-1-amine Chemical group 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 2
- 229910000073 phosphorus hydride Inorganic materials 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 238000005160 1H NMR spectroscopy Methods 0.000 description 1
- DHDHJYNTEFLIHY-UHFFFAOYSA-N 4,7-diphenyl-1,10-phenanthroline Chemical compound C1=CC=CC=C1C1=CC=NC2=C1C=CC1=C(C=3C=CC=CC=3)C=CN=C21 DHDHJYNTEFLIHY-UHFFFAOYSA-N 0.000 description 1
- 229910017073 AlLi Inorganic materials 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910021589 Copper(I) bromide Inorganic materials 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 238000005481 NMR spectroscopy Methods 0.000 description 1
- NRCMAYZCPIVABH-UHFFFAOYSA-N Quinacridone Chemical class N1C2=CC=CC=C2C(=O)C2=C1C=C1C(=O)C3=CC=CC=C3NC1=C2 NRCMAYZCPIVABH-UHFFFAOYSA-N 0.000 description 1
- 238000002441 X-ray diffraction Methods 0.000 description 1
- DGEZNRSVGBDHLK-UHFFFAOYSA-N [1,10]phenanthroline Chemical compound C1=CN=C2C3=NC=CC=C3C=CC2=C1 DGEZNRSVGBDHLK-UHFFFAOYSA-N 0.000 description 1
- 125000003545 alkoxy group Chemical group 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 125000003710 aryl alkyl group Chemical group 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- GBRBMTNGQBKBQE-UHFFFAOYSA-L copper;diiodide Chemical compound I[Cu]I GBRBMTNGQBKBQE-UHFFFAOYSA-L 0.000 description 1
- 150000001893 coumarin derivatives Chemical class 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002019 doping agent Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000007641 inkjet printing Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 229910052740 iodine Inorganic materials 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 239000012299 nitrogen atmosphere Substances 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- AHLBNYSZXLDEJQ-FWEHEUNISA-N orlistat Chemical compound CCCCCCCCCCC[C@H](OC(=O)[C@H](CC(C)C)NC=O)C[C@@H]1OC(=O)[C@H]1CCCCCC AHLBNYSZXLDEJQ-FWEHEUNISA-N 0.000 description 1
- 150000004866 oxadiazoles Chemical class 0.000 description 1
- 230000001443 photoexcitation Effects 0.000 description 1
- 238000005424 photoluminescence Methods 0.000 description 1
- NROKBHXJSPEDAR-UHFFFAOYSA-M potassium fluoride Chemical compound [F-].[K+] NROKBHXJSPEDAR-UHFFFAOYSA-M 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000012552 review Methods 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000007962 solid dispersion Substances 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 238000012916 structural analysis Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
- 125000001544 thienyl group Chemical group 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 229910052723 transition metal Inorganic materials 0.000 description 1
- 150000003624 transition metals Chemical class 0.000 description 1
- 125000006617 triphenylamine group Chemical group 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
- 238000002424 x-ray crystallography Methods 0.000 description 1
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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
- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/06—Luminescent, e.g. electroluminescent, chemiluminescent materials containing organic luminescent materials
-
- 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
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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
- H10K85/30—Coordination compounds
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- H—ELECTRICITY
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- 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
- H10K85/371—Metal complexes comprising a group IB metal element, e.g. comprising copper, gold or silver
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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
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- C09K2211/00—Chemical nature of organic luminescent or tenebrescent compounds
- C09K2211/10—Non-macromolecular compounds
- C09K2211/1003—Carbocyclic compounds
- C09K2211/1014—Carbocyclic compounds bridged by heteroatoms, e.g. N, P, Si or B
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- 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
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- C09K2211/10—Non-macromolecular compounds
- C09K2211/1018—Heterocyclic compounds
- C09K2211/1025—Heterocyclic compounds characterised by ligands
- C09K2211/1044—Heterocyclic compounds characterised by ligands containing two nitrogen atoms as heteroatoms
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- C09K2211/00—Chemical nature of organic luminescent or tenebrescent compounds
- C09K2211/18—Metal complexes
- C09K2211/188—Metal complexes of other metals not provided for in one of the previous groups
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- 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
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- H10K85/60—Organic compounds having low molecular weight
- H10K85/631—Amine compounds having at least two aryl rest on at least one amine-nitrogen atom, e.g. triphenylamine
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- 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
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Description
・MLCT(metal−to−ligand−charge−transfer)励起状態
・CC(Cluster canter)励起状態
・XLCT(halogen−to−ligand−charge−transfer)励起状態
(A)2L+2CuI→LCu(μI)2CuL
(B)L1+L2+2CuI→L1Cu(μI)2CuL2
(C)4L+4CuI→(CuIL)4
(実施例1〜9)
以下の化合物を前記反応式(A)〜(C)に従って合成した。これらの構造は、1H−NMR(Bruker DPX−400 NMR)及び元素分析(Vario EL CHNOS)によって同定した。元素分析では、CHNの元素重量比の計算値に対し、0.5%以下の誤差でよく一致した。
実施例2、4、8で合成した例示化合物1002、1138、4005を発光材料として用いて有機EL素子を作成した。
クロロベンゼン:10g
ポリビニルカルバゾール(平均分子量9600):92mg
例示化合物1002、1138、または4005:8mg
金属電極層1(15nm):AlLi合金(Li含有量1.8質量%)
金属電極層2(100nm):Al
以上の製膜が終わった後、素子を取り出して評価した。
実施例12と発光層以外は実施例12と同様にして発光素子を作製した。発光層は、例示化合物4005を100質量%で30nmの膜厚でスピンコートで形成した。EL発光は、200cd/cm2で発光させた時、良好な発光を示し、10時間通電しても良好な発光が得られた。実施例12より、発光効率が高く100%で発光層を形成することにより、高い効率が得られることが判った。結果を表6に示す。
本実施例では、真空蒸着法で全ての有機層を形成し、有機EL素子を作成した。ホール輸送層3材料には先に示したαNPDを用い、発光層2には実施例2で合成した例示化合物1002を100質量%で用い、電子輸送層6にはBPhenを用いた。それぞれ厚さは40nmである。
本実施例は、2座配位子に[化20]の配位子504を用いた2核の金属配位化合物(例示化合物1034、1160、1253)の実施例である。合成には、[0098]の(A)の方法を用い合成した。これらの化合物は熱的安定性に優れ昇華性であるため、10-1Paの真空下で昇華精製を行い精製した。本化合物の同定には、元素分析及びX線結晶解析を用いた。元素分析は、元素分析測定機「Vario EL CHNOS」(Elementar社製)を用いて測定した。X線結晶解析は、昇華精製時に形成された結晶を用い、理学社製RAXIS−RAPIDイメージングプレートを用いて測定した。X線はMoKα線(l=0.71069Å)をグラファイトモノクロメータで単色化して用いた。例示化合物1253の結晶解析の結果の分子構造を図4に示した。
本実施例では、上記実施例15及び17で合成した例示化合物1034と1253を用いて真空蒸着法により、有機LED素子を作成しその発光特性を調べた。素子構成は、[化27]に示した化合物を用いた。その構成は「NPD(50nm)/CBP:Cu配位化合物(10%)(20nm、60nm)/Bphen(40nm)」とした。電極にはNPD側にITOをBphen側にAlを用い、BphenとAl電極の間に電子注入層としてフッ化カリウム(KF)を5nm積層した。発光層は、20nm及び60nmの2種類の膜厚の素子を作成した。本実施例の有機LED素子は良好な整流性を示した。電流−電圧−輝度特性のデータから、以下のような結果が得られた。
2 発光層
3 ホール輸送層
4 透明電極
5 透明基板
6 電子輸送層
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JP2004267705A JP4557651B2 (ja) | 2003-10-01 | 2004-09-15 | 発光性銅配位化合物及び有機発光素子 |
US10/951,686 US7413818B2 (en) | 2003-10-01 | 2004-09-29 | Light-emitting device |
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JP2004267705A JP4557651B2 (ja) | 2003-10-01 | 2004-09-15 | 発光性銅配位化合物及び有機発光素子 |
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JP2005129499A JP2005129499A (ja) | 2005-05-19 |
JP2005129499A5 JP2005129499A5 (ja) | 2007-10-04 |
JP4557651B2 true JP4557651B2 (ja) | 2010-10-06 |
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JP (1) | JP4557651B2 (ja) |
Families Citing this family (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4328702B2 (ja) * | 2003-12-01 | 2009-09-09 | キヤノン株式会社 | 有機el素子 |
DE102004046665A1 (de) * | 2004-09-24 | 2006-07-27 | Basf Ag | Verwendung von Kupfer(I)-Komplexen in organischen lichtemittierenden Dioden |
JP4328704B2 (ja) * | 2004-10-14 | 2009-09-09 | キヤノン株式会社 | 有機エレクトロルミネッセンス素子及びこれを用いた表示装置 |
JP4764047B2 (ja) * | 2005-03-31 | 2011-08-31 | キヤノン株式会社 | 発光素子 |
JP5084204B2 (ja) * | 2006-09-06 | 2012-11-28 | キヤノン株式会社 | 発光素子及び高分子混合金属錯体 |
JP5053713B2 (ja) * | 2007-05-30 | 2012-10-17 | キヤノン株式会社 | リン光発光材料、それを用いた有機電界発光素子及び画像表示装置 |
JP5305637B2 (ja) | 2007-11-08 | 2013-10-02 | キヤノン株式会社 | 有機金属錯体及びこれを用いた有機発光素子並びに表示装置 |
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EP2594571A1 (de) * | 2011-11-16 | 2013-05-22 | Cynora GmbH | Kupfer-Komplexe für optoelektronische Anwendungen |
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JP2940514B2 (ja) | 1997-05-07 | 1999-08-25 | 日本電気株式会社 | 有機エレクトロルミネッセント素子 |
EP1426399A4 (en) | 2001-09-04 | 2005-07-13 | Canon Kk | HIGHLY MOLECULAR COMPOUNDS AND ORGANIC LUMINESCENT DEVICES |
JP4208657B2 (ja) * | 2003-07-15 | 2009-01-14 | キヤノン株式会社 | 発光素子 |
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