TW200816860A - Tandem organic electroluminescent elements and display using the same - Google Patents
Tandem organic electroluminescent elements and display using the same Download PDFInfo
- Publication number
- TW200816860A TW200816860A TW095135191A TW95135191A TW200816860A TW 200816860 A TW200816860 A TW 200816860A TW 095135191 A TW095135191 A TW 095135191A TW 95135191 A TW95135191 A TW 95135191A TW 200816860 A TW200816860 A TW 200816860A
- Authority
- TW
- Taiwan
- Prior art keywords
- organic
- organic electroluminescent
- layer
- tandem
- organic layer
- Prior art date
Links
- 238000002347 injection Methods 0.000 claims abstract description 53
- 239000007924 injection Substances 0.000 claims abstract description 53
- 239000012044 organic layer Substances 0.000 claims abstract description 53
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- 150000001875 compounds Chemical class 0.000 claims description 7
- 239000002019 doping agent Substances 0.000 claims description 6
- 238000005401 electroluminescence Methods 0.000 claims description 5
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- 239000005416 organic matter Substances 0.000 claims description 2
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- 229910052715 tantalum Inorganic materials 0.000 claims 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 claims 1
- 239000010409 thin film Substances 0.000 claims 1
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- -1 dimethyl phthalocyanine Chemical compound 0.000 description 14
- 230000005540 biological transmission Effects 0.000 description 6
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- 125000003118 aryl group Chemical group 0.000 description 5
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- 238000005516 engineering process Methods 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
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- FKASFBLJDCHBNZ-UHFFFAOYSA-N 1,3,4-oxadiazole Chemical compound C1=NN=CO1 FKASFBLJDCHBNZ-UHFFFAOYSA-N 0.000 description 2
- 125000001637 1-naphthyl group Chemical group [H]C1=C([H])C([H])=C2C(*)=C([H])C([H])=C([H])C2=C1[H] 0.000 description 2
- GEQBRULPNIVQPP-UHFFFAOYSA-N 2-[3,5-bis(1-phenylbenzimidazol-2-yl)phenyl]-1-phenylbenzimidazole Chemical compound C1=CC=CC=C1N1C2=CC=CC=C2N=C1C1=CC(C=2N(C3=CC=CC=C3N=2)C=2C=CC=CC=2)=CC(C=2N(C3=CC=CC=C3N=2)C=2C=CC=CC=2)=C1 GEQBRULPNIVQPP-UHFFFAOYSA-N 0.000 description 2
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- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 description 2
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- GQVWHWAWLPCBHB-UHFFFAOYSA-L beryllium;benzo[h]quinolin-10-olate Chemical compound [Be+2].C1=CC=NC2=C3C([O-])=CC=CC3=CC=C21.C1=CC=NC2=C3C([O-])=CC=CC3=CC=C21 GQVWHWAWLPCBHB-UHFFFAOYSA-L 0.000 description 2
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- NIHNNTQXNPWCJQ-UHFFFAOYSA-N fluorene Chemical compound C1=CC=C2CC3=CC=CC=C3C2=C1 NIHNNTQXNPWCJQ-UHFFFAOYSA-N 0.000 description 2
- 235000008434 ginseng Nutrition 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 229910010272 inorganic material Inorganic materials 0.000 description 2
- 239000011147 inorganic material Substances 0.000 description 2
- LBAIJNRSTQHDMR-UHFFFAOYSA-N magnesium phthalocyanine Chemical compound [Mg].C12=CC=CC=C2C(N=C2NC(C3=CC=CC=C32)=N2)=NC1=NC([C]1C=CC=CC1=1)=NC=1N=C1[C]3C=CC=CC3=C2N1 LBAIJNRSTQHDMR-UHFFFAOYSA-N 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 150000002894 organic compounds Chemical class 0.000 description 2
- 239000011368 organic material Substances 0.000 description 2
- ZUOUZKKEUPVFJK-UHFFFAOYSA-N phenylbenzene Natural products C1=CC=CC=C1C1=CC=CC=C1 ZUOUZKKEUPVFJK-UHFFFAOYSA-N 0.000 description 2
- 229920003227 poly(N-vinyl carbazole) Polymers 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- MCJGNVYPOGVAJF-UHFFFAOYSA-N quinolin-8-ol Chemical compound C1=CN=C2C(O)=CC=CC2=C1 MCJGNVYPOGVAJF-UHFFFAOYSA-N 0.000 description 2
- 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 2
- 125000005259 triarylamine group Chemical group 0.000 description 2
- PMJHHCWVYXUKFD-SNAWJCMRSA-N (E)-1,3-pentadiene Chemical compound C\C=C\C=C PMJHHCWVYXUKFD-SNAWJCMRSA-N 0.000 description 1
- 125000001376 1,2,4-triazolyl group Chemical class N1N=C(N=C1)* 0.000 description 1
- DIIIISSCIXVANO-UHFFFAOYSA-N 1,2-Dimethylhydrazine Chemical compound CNNC DIIIISSCIXVANO-UHFFFAOYSA-N 0.000 description 1
- IJVBYWCDGKXHKK-UHFFFAOYSA-N 1-n,1-n,2-n,2-n-tetraphenylbenzene-1,2-diamine Chemical compound C1=CC=CC=C1N(C=1C(=CC=CC=1)N(C=1C=CC=CC=1)C=1C=CC=CC=1)C1=CC=CC=C1 IJVBYWCDGKXHKK-UHFFFAOYSA-N 0.000 description 1
- IYZMXHQDXZKNCY-UHFFFAOYSA-N 1-n,1-n-diphenyl-4-n,4-n-bis[4-(n-phenylanilino)phenyl]benzene-1,4-diamine Chemical compound C1=CC=CC=C1N(C=1C=CC(=CC=1)N(C=1C=CC(=CC=1)N(C=1C=CC=CC=1)C=1C=CC=CC=1)C=1C=CC(=CC=1)N(C=1C=CC=CC=1)C=1C=CC=CC=1)C1=CC=CC=C1 IYZMXHQDXZKNCY-UHFFFAOYSA-N 0.000 description 1
- XNCMQRWVMWLODV-UHFFFAOYSA-N 1-phenylbenzimidazole Chemical compound C1=NC2=CC=CC=C2N1C1=CC=CC=C1 XNCMQRWVMWLODV-UHFFFAOYSA-N 0.000 description 1
- VEUMBMHMMCOFAG-UHFFFAOYSA-N 2,3-dihydrooxadiazole Chemical compound N1NC=CO1 VEUMBMHMMCOFAG-UHFFFAOYSA-N 0.000 description 1
- STTGYIUESPWXOW-UHFFFAOYSA-N 2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline Chemical compound C=12C=CC3=C(C=4C=CC=CC=4)C=C(C)N=C3C2=NC(C)=CC=1C1=CC=CC=C1 STTGYIUESPWXOW-UHFFFAOYSA-N 0.000 description 1
- UOCMXZLNHQBBOS-UHFFFAOYSA-N 2-(1,3-benzoxazol-2-yl)phenol zinc Chemical compound [Zn].Oc1ccccc1-c1nc2ccccc2o1.Oc1ccccc1-c1nc2ccccc2o1 UOCMXZLNHQBBOS-UHFFFAOYSA-N 0.000 description 1
- FQJQNLKWTRGIEB-UHFFFAOYSA-N 2-(4-tert-butylphenyl)-5-[3-[5-(4-tert-butylphenyl)-1,3,4-oxadiazol-2-yl]phenyl]-1,3,4-oxadiazole Chemical compound C1=CC(C(C)(C)C)=CC=C1C1=NN=C(C=2C=C(C=CC=2)C=2OC(=NN=2)C=2C=CC(=CC=2)C(C)(C)C)O1 FQJQNLKWTRGIEB-UHFFFAOYSA-N 0.000 description 1
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- 241000283690 Bos taurus Species 0.000 description 1
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical class C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 229910000846 In alloy Inorganic materials 0.000 description 1
- SIKJAQJRHWYJAI-UHFFFAOYSA-N Indole Chemical class C1=CC=C2NC=CC2=C1 SIKJAQJRHWYJAI-UHFFFAOYSA-N 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- RTEZUDZYUIRPMO-UHFFFAOYSA-N SC=1C=C(C=CC1)N(C1=CC=CC=C1)C1=C(C=CC=C1)N(C1=CC=CC=C1)C1=CC=CC=C1 Chemical compound SC=1C=C(C=CC1)N(C1=CC=CC=C1)C1=C(C=CC=C1)N(C1=CC=CC=C1)C1=CC=CC=C1 RTEZUDZYUIRPMO-UHFFFAOYSA-N 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- PJANXHGTPQOBST-VAWYXSNFSA-N Stilbene Natural products C=1C=CC=CC=1/C=C/C1=CC=CC=C1 PJANXHGTPQOBST-VAWYXSNFSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- REDXJYDRNCIFBQ-UHFFFAOYSA-N aluminium(3+) Chemical compound [Al+3] REDXJYDRNCIFBQ-UHFFFAOYSA-N 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 125000006267 biphenyl group Chemical group 0.000 description 1
- UFVXQDWNSAGPHN-UHFFFAOYSA-K bis[(2-methylquinolin-8-yl)oxy]-(4-phenylphenoxy)alumane Chemical compound [Al+3].C1=CC=C([O-])C2=NC(C)=CC=C21.C1=CC=C([O-])C2=NC(C)=CC=C21.C1=CC([O-])=CC=C1C1=CC=CC=C1 UFVXQDWNSAGPHN-UHFFFAOYSA-K 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- FJDQFPXHSGXQBY-UHFFFAOYSA-L caesium carbonate Chemical compound [Cs+].[Cs+].[O-]C([O-])=O FJDQFPXHSGXQBY-UHFFFAOYSA-L 0.000 description 1
- 229910000024 caesium carbonate Inorganic materials 0.000 description 1
- 125000000609 carbazolyl group Chemical class C1(=CC=CC=2C3=CC=CC=C3NC12)* 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-N carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 description 1
- 239000002738 chelating agent Substances 0.000 description 1
- 229920000547 conjugated polymer Polymers 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 125000003983 fluorenyl group Chemical class C1(=CC=CC=2C3=CC=CC=C3CC12)* 0.000 description 1
- RBTKNAXYKSUFRK-UHFFFAOYSA-N heliogen blue Chemical compound [Cu].[N-]1C2=C(C=CC=C3)C3=C1N=C([N-]1)C3=CC=CC=C3C1=NC([N-]1)=C(C=CC=C3)C3=C1N=C([N-]1)C3=CC=CC=C3C1=N2 RBTKNAXYKSUFRK-UHFFFAOYSA-N 0.000 description 1
- 125000000623 heterocyclic group Chemical group 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229940058961 hydroxyquinoline derivative for amoebiasis and other protozoal diseases Drugs 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- RHZWSUVWRRXEJF-UHFFFAOYSA-N indium tin Chemical compound [In].[Sn] RHZWSUVWRRXEJF-UHFFFAOYSA-N 0.000 description 1
- 229910017053 inorganic salt Inorganic materials 0.000 description 1
- 230000001795 light effect Effects 0.000 description 1
- 125000000040 m-tolyl group Chemical group [H]C1=C([H])C(*)=C([H])C(=C1[H])C([H])([H])[H] 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 150000002736 metal compounds Chemical class 0.000 description 1
- 229960005181 morphine Drugs 0.000 description 1
- BQJCRHHNABKAKU-KBQPJGBKSA-N morphine Natural products O([C@H]1[C@H](C=C[C@H]23)O)C4=C5[C@@]12CCN(C)[C@@H]3CC5=CC=C4O BQJCRHHNABKAKU-KBQPJGBKSA-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
- 229960003540 oxyquinoline Drugs 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 125000000843 phenylene group Chemical group C1(=C(C=CC=C1)*)* 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000001397 quillaja saponaria molina bark Substances 0.000 description 1
- LISFMEBWQUVKPJ-UHFFFAOYSA-N quinolin-2-ol Chemical compound C1=CC=C2NC(=O)C=CC2=C1 LISFMEBWQUVKPJ-UHFFFAOYSA-N 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000027756 respiratory electron transport chain Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 229930182490 saponin Natural products 0.000 description 1
- 150000007949 saponins Chemical class 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 235000021286 stilbenes Nutrition 0.000 description 1
- 229910052712 strontium Inorganic materials 0.000 description 1
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 description 1
- PXQLVRUNWNTZOS-UHFFFAOYSA-N sulfanyl Chemical class [SH] PXQLVRUNWNTZOS-UHFFFAOYSA-N 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
- 150000003918 triazines Chemical class 0.000 description 1
- ODHXBMXNKOYIBV-UHFFFAOYSA-N triphenylamine Chemical compound C1=CC=CC=C1N(C=1C=CC=CC=1)C1=CC=CC=C1 ODHXBMXNKOYIBV-UHFFFAOYSA-N 0.000 description 1
- ORGHESHFQPYLAO-UHFFFAOYSA-N vinyl radical Chemical compound C=[CH] ORGHESHFQPYLAO-UHFFFAOYSA-N 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Classifications
-
- 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]
- H10K50/19—Tandem OLEDs
-
- 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]
- H10K50/17—Carrier injection layers
-
- 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]
- H10K50/17—Carrier injection layers
- H10K50/171—Electron injection layers
-
- 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
- H10K85/311—Phthalocyanine
-
- 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
- H10K85/321—Metal complexes comprising a group IIIA element, e.g. Tris (8-hydroxyquinoline) gallium [Gaq3]
- H10K85/324—Metal complexes comprising a group IIIA element, e.g. Tris (8-hydroxyquinoline) gallium [Gaq3] comprising aluminium, e.g. Alq3
-
- 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
- H10K85/631—Amine compounds having at least two aryl rest on at least one amine-nitrogen atom, e.g. triphenylamine
-
- 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
- H10K85/631—Amine compounds having at least two aryl rest on at least one amine-nitrogen atom, e.g. triphenylamine
- H10K85/633—Amine compounds having at least two aryl rest on at least one amine-nitrogen atom, e.g. triphenylamine comprising polycyclic condensed aromatic hydrocarbons as substituents on the nitrogen atom
-
- 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
- H10K85/656—Aromatic compounds comprising a hetero atom comprising two or more different heteroatoms per ring
- H10K85/6565—Oxadiazole compounds
-
- 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
Description
200816860 九、發明說明: 【發明所屬之技術領域】 本發明係關於一種串聯式有機電激發光元件,特別 是關於一種用於有機電激發光顯示器之串聯式有機電激發 光元件。 【先前技術】 有機電激發光元件(organic electroluminescent device)具有高亮 f^ 度、輕薄、自發光、低消耗功率、不需背光源、無視角限制、高 對比、操作溫度範圍廣、發光效率高、製程簡易及高反應速率等 優點,已成為全球科技之重要焦點,更受到平面顯示器業界之高 度重視。有機電激發光元件依其所使用有機發光材料,可分為兩 種技術類型:一為以低分子系(small molecular)作為有機發光層, 泛稱為有機發光二極體(organic light emitting diode,OLED,或 organic electroluminescence);另一為以共軛高分子系(polymer) 作為有機發光層,統稱為高分子發光二極體(P〇lymer ligh emitUng diode,PLED,或 light emitting polymer,LEP)。 l 一般而言,有機電激發光元件係包含陰極、陽極、及位於 陰/陽極間之發光單元,其作用原理為:在外加電場作用下,電子 與電洞分別由陰極與陽極注入,並在此元件中進行傳遞,當電子、 電洞在發光單元相遇後,電子及電洞再結合(recombinatioi形成一 激發子(exciton),激發子在電場作用下將能量傳遞給存在於發光單 元中之發光分子,發光分子便將能量以光的形式釋放出來。"常見 之有機電激發光元件,係於發光單元中包含電洞傳輸層、發光層、 及電子傳輸層等多層結構,且經由以下方式製得:在!^極(indi9um tm oxide,ITO)上蒸鍍電洞傳輸層(h0丨e transp〇rting ι_,htl),接 著蒸鑛發光層(emitting layer,EL),再蒸錢電子傳輸層(dectr〇n transporting layer, ETL) ^ o 5 200816860 習知串聯式有機電激發光元件中,多重光子發射(聰 mulUphoton emission)技術係由陽極^、陰極13、多個發 ’ charge generation layer)17^J. 成示之習知串聯式械電激發光元件1。為增加元件 操作電壓’此使得使用多重絲發射技術之串 聯式有機f激發光元件的壽命減少,離增域本及能量消耗。 機恭串聯式有機電激發光元件而[兩個互相串聯的有 〜凡之間’其連接介面常因過度的操作電壓要求,使 仟早70間的介面不穩定。 災 作雷可知,齡之串聯式有機電光元件,若非操 ,電£較尚,便因有機電激發光單元間之連接介面不安 界求。此即,業界實函需-種具有低操作 主 連接μ面安定性高之串聯式有機電激發光元件,其可 並操作電壓及單錢接界面安定性低等缺點, 並月b挺先效率、減少能量消耗並降低成本。 【發明内容】 目的,在於提供一種串聯式有機電激發光元件。 =ΐίί機電激發光元件包含一陽極、—陰極、—第-強電荷 激發Ϊ單元機ί中一Ϊ二強電荷注入能力有機層和至少二有機電 陴it: ΐ弟一強電荷注入能力有機層係設置於陽極與 ί力有^極相鄰,其係包含一第一材料;第二強電荷注又 J有ϊϊ亦設置於陽極與陰極之間,但與陰極相鄰,其係包含 =巧。該至少二有機電激發光單城串聯設置於 何注入此力有機層與第二強電荷注入能力有機層之間。涟书 将勺之又—目的’在於提供-種有機電激發光顯示器,里 $含::所述之串聯式有機電激發光元件;以及一畫素薄膜: 曰日體,與串聯式有機電激發光元件電性連接。 、电 6 200816860 層,使電極ί有1用,具強電荷注入能力之有機 有機電激發光元串聯式 明所採用之技術手^較佳申及其他發明目的,以及本發 【實施方式】 第2二:以一雷為:f串聯式有機電激發光元件,如 ^^ΖΤ:ξΤΤ^ 203 及第二有機電激發光單i 置單元209 有機層2G5與第二強電荷注人能力有^層斯之 1電何注入能力 於串聯式有機電激發光元件2中, ίϊίϊ ^所構成’陰極203則由具相對低功函數之材力 為透明電極林_電極。舉例言\者以=:^-者了 化物(Indium Tin Oxide,ITO)透明•朽^^ ° 採用銦錫氧 鎂銀合金、妈、及她合金Γ極’於陰極加採用由如鎖、 特)之載子遷移率,以提供所欲之電荷注入能力。“ 200816860 電荷注入能力有機層205具有IxlO·4 cm2/ys (含)以上 率;第二強電荷注入能力有機層207具有lxl〇-4 Cm2/Vs= ^ 之電子遷移率。較佳地,該等強電荷注人能力有機層之 率係高於Φ聯式錢電激發光元件巾的任何電子 移率 第一強電荷注入能力有機層205係由一第一材料和一第一 材組成,第二強電荷注入能力有機層207則由一第二 一= ^基材組成。其中,該第-基材及第二基材可為相同或不同 機物,該第一材料及第二材料亦可為相同或不同,且 機物及無機物所組成之群組。 ’、、 有 -般而言,為使第-基材肖第二基材分別具有電神電 傳輸能力,通常係採用不同材料,但某些有機材料由於兼呈At 助電洞及電子傳送的特性,故可適用於第一基材及第二基 例=^(但不限於此),第一基材與第二基材均可適用之材料包含牛: 銅苯二甲藍((;0卯沉1)1池&1〇〇731111^,0^〇)、2,9-二曱基-4 7-二苯美 -1,10-二氮雜菲(2,9-dimethyl-4,7-diphenyl-1,1 O^henamhrd^
C BCP)、如4,4’-雙(9-二咔唑基)_二苯基 (4,4-biS(9-dicarbaZ〇lyl)_biPheny卜 CBP)之咔唑衍生物(carbaz:e derivatives)、如 4,4’-雙(2,2,-二苯基乙烯基 >UL 二苯基 (4,4’_仏(2,2’-仰1^1^1\^1^1)-1,1’-师1^1^,0?乂3〇之二苯乙烯基$ 苯基衍生物(distyrylarylene derivatives)、蔥衍生物(amhracene derivatives)、以及苟衍生物(fluorene (}erivatives)。其他適合材料包 括各式金屬苯二甲藍(metal phthalocyanines),例如(但不限於此)辞 笨二甲藍(ZnPc)、鎂苯二甲藍(MgPc)、以及錯苯二甲藍(pbpc)。 如前述,由於第一強電荷注入能力有機層205係與陽極2〇1 相鄰,故更適之材料為具高電洞傳送性質之有機化合物,亦即, 具強拉電子性質之有機化合物。較佳地,該第一基材之材料係芳 族弟二胺(aromatic tertiary amine),其具至少一與碳原子鏈結之二 8 200816860 價氮原子’且具至少一芳香環。該芳族第三胺可為芳基胺 (arylamine) ’ 如:單芳基胺(m〇n〇aryi amine)、二芳基胺 (diarylamme)、三芳基胺(triarylamine)、或聚合芳基胺 arylamine)。亦可採用經一或多個乙烯基(vinyl radical)及/或至少一 個活性含氫基團(active hydrogen-containing group)取代之三芳基 胺。較佳之芳族第三胺類係包含至少二個芳族第三胺部份,例如 (但不限於此):N,N,-二(伸萘小基)_N,N,_二笨基-聯笨胺 (N,N’-di(naphthalene-1 -yl)-N,Nf-diphenyl-benzidine , NPB)、 N,N,N’,NL 四萘基-聯苯胺(N,N,N,,N,-tetranaphthyl-benZidine,TNB)、 N,NL二苯基-N,N’_雙(3-曱基苯基)-1,Γ-二苯基-4,4’-二胺 (N,N’_diphenyl-N,N’_bis(3_methylphenyl)-l-l’-biphenyl_4-4,_diamine ,TPD)、N,N’-二苯基-N,N’_雙(1-萘基)·1,1,_二苯基_4,4,二胺 (NW-diphenyl-N’N’-bisG-naphthylH-r-biphenyW^-diamine , α-NPD)、4,4’,4”-參(N,N_二苯基-胺基)_三苯胺 (4,4’,4’’-tris(N,N-diphenyl-amino)-triphenylamine,TDATA)、4,4,,4"- 參(3-曱基苯基苯基胺基)-三苯胺(4,4’,4,,_tris (3_methylphenylphenylamino),triphenylamine,MTDATA)、聚(2-乙 烯基三苯胺允〇以(\^1^1仕丨01^11}^111&),?\^)和聚(11_乙晞味。坐) (poly(n-vinylcarbazole),PVK) 〇 另,由於第二強電荷注入能力有機層207係與陰極203相鄰, 故更適用之材料為具有南電子傳送性質的有機化合物。較佳地, 該第二基材之材料為金屬8-經基啥淋化合物,包含8_經基螯合物 (亦指 8-羥基喹琳(8-quinolinol)或8-羥基喧琳 (8-hydroxyquinoline)),譬如參(8-羥基喹啉)在呂 (tris(8-hydroxyquinoline) aluminum )。第二基材之材料亦可為丁二 烯衍生物(butadiene derivatives )、三氮六環衍生物(triazines derivatives)、經基喹琳衍生物(hydroxyquinoline derivatives)、笨并 口比洛衍生物(benzazole derivatives)、石夕基衍生物(sil〇le derivatives),如 2,5_雙(2f,2”_二吼咬-6-基)-1,1-二曱基 j,4-二苯 200816860 基 矽雜環 戊二烯 (2,5-bis(2’,2"-bipridin-6-yl)-l,l-dimethyl-3,4,diphenyl silacyclopentadiene )、2,5_ 雙(1_萘基)-l,3,4-噁二唑基(2,5-bis(l-naphthyl)_l,3,4-oxadiazole, BND)、2_(4_二苯基)-5-(4-第三丁基苯基)-l,3,4-噁二唑基 (2_(4-biphenylyl)-5-(4-tert_butyl phenyl)· 1,3,4 oxadiazole,PBD)、 1,3-雙[(4-第三丁基苯基)_1,3,4_噁二唑]伸苯基 (l,3-bis[(4-tert-butylphenyl)-l,3,4-oxadiazolyl]phenylene,OXD-7)、 1,2,4_三嗤衍生物(l,2,4_triazole derivative,TAZ)、4,7-二苯基_1,10- 啡略琳(4,7,(^1^11>4_1,10_卩116冊111;11]:〇111^,6?]^11)、2,9-二曱基,4,7-二
苯基-1,10-啡洛琳(2,9-dimethyl-4,7-diphenyl-1,10_phenanthroline, BCP) 、1,3,5-參(N-苯基苯并咪唑_2V基)苯 (l,3,5-tris(N-phenylbenzimidazol-2-yl)benzene,TPBI)、參(8_羥基喹 琳)鋁(Tris(8-hydroxyquinoline)aluminum,Alq3)、雙(10-羥基苯並 [h]啥琳)鈹(bis(10-hydroxybenzo[h]quinolinato)beryllium,BeBq2)、 雙(2-曱基-8-喹啉酸)對苯基酚酸鋁(II以bis(2-methyl_ 8_quinolinolato)(para_phenylphenolato)aluminum (III),BAlq)和雙 l>(2-羥基苯基)苯并噁唑]鋅 (bis[2_(2-hydroxyphenyl)benzoxazolate]zinc,Zn (BOX)2)。 適用為第一材料之無機物包括P型摻雜物,其較佳為功函數 大於4.2eV之一第一金屬及其化合物。將此P型摻雜物攙入第一 基材,可提高第一強電荷注入能力有機層2〇5之電洞傳送率。於 ^,除稀鹼土族麵及其合金以外,大部分金屬均可作為此p型 摻雜物。較佳地,該p型摻雜物係選自以下群組之金屬:金、銀、 U物組合及其化合物。金屬化合物則可為有機金 ㈣口物或為i屬有機鹽類、無機鹽類、氧化物和_化物。 此),用亦有機物為第一材料。舉例言之(但不限於 Η了採用2,3,5,6-四氟·7,7,8,8·四氰環己二稀二甲俨 ,¾ 1 f4-tcnq)^/ 稀一甲烷(7,7,8,8-tetmcyan〇quinodimethane, 200816860 TCNQ)以提供該第一材料。 叙丨^二機之無機物包括n型摻_,其較佳為具功函 3 3於二:第二金屬及其化合物。將此η型摻雜物攙 入弟一基材,可挺尚弟二強電荷注入能力有機層2〇7之 率。,中’该第二金屬可為鹼金屬,譬如鐘、鈉、鉀、物或絶;、 Ϊ 土Ϊ金屬:Ϊ如鎂,、銷或鋇;稀土金屬,譬如鑭、髟、銪,、 Α居鏑1 解或鏡;或包含上述金屬的合金,譬如鋁合金、銦合金。 Μ第2機電激發光單元2°9及第二有機電激發料元211之 加^、、、、。構、光色、材料及製程,可視需要為相同或不同,只 ^所需之電子及電洞傳輸能力即可。單元2。 ^ ,其係包含一發光層,且可視需 以:ί !結構:電子注入層、電子傳輸層、電洞 =輸層電洞注入層、電子阻擒層(electron bl〇cking 層電等子言之(但不限於此)可為:電洞傳輸 ^ ίϋ入^ ί I電洞注入層/電洞傳輸層/發光層/電子傳輸 層電洞傳輸層/發光層/電子傳輸層/電子注入層、電 層;電傳,電洞阻播層/發光層/電子傳輸 ^罝-ίη回?何注入能力之有機層。譬如,當第一有機電激發 發光ίζ電有機丨電激發光單元211之結構皆為電洞傳輸層) ΐ視輸^ 1加入二高電荷注入能力之有機層。此外, 211之間加入-電荷產t早70 209及第二有機電激發光單元 能轉換成魏,ge_tiGn 一’ cgl) ’以將光 供多重光子發射之顿 生電子’增加元件發級率,提 200816860 々以下將以第3A目至第3D目進一步說明本發明之效益。豆 中1第3A圖係為電壓與電流密度關係圖,橫軸與縱軸分別二ς 光兀件之電壓(伏特)與電流密度(毫安培/平方公分)。帛3β圖^ 電壓對亮度之_®,橫軸與縱軸分職表發光元件之電伏= f ΐί(=光坪方公>尺)。第3C圖為發光效率與亮度之關係圖,i 軸代表叙;^元件之焭度(燭光/平方公尺),縱軸則代表含單一 電激發光單元讀光元件的最錯紐為卿%所計算 、 2 „單:有機電激發光單元之發光元件的發光效率不再。 通7C又之長:升而增加時,以該發光效率為基準,計算各發光元 於不同亮度之發光效率)。第3D圖為亮度對光色之關係^,橫轴 與縱軸分別代表發光元件之亮度(燭光/平方公尺)與光色。 —於第Μ目至第3D @中,、線a代表於含單一有機電激發光 兀之發光元件中,僅於陽極與發光單元間加入第一強電荷注入
力有機層之^現;其中,該第—強電荷注人能力有機層為推雜有 2,3,5,6-四氟-7,7,8,8-四氰環己二稀二甲烷(2,3,5,6_tetraflu〇iO -7,7,8,84etracyanoquinodimethane,F4_TCNQ)之電洞注入層;線 b 代表於含二發光單元之串聯式有機電激發光元件2中,^僅於 極與相⑦發光單元間加人強電荷注人能力有機層,且於陰極與相 鄰發光間加人第二強電荷注人能力有機層、於兩發光單元間 加入弟一強電荷注入能力有機層,其中,該第二及第三強電荷 /主入月b力有機層均為摻雜有碳酸铯之2_(曱基)_9,1〇_雙_(2_萘 基)蔥,線c代表於含二發光單元之串聯式有機電激發光元件2 ^、’如線b態樣般地採用第一強電荷注入能力有機層、第二強電 ,注入能$有機層、以及第三強電荷注人能力有機層之態樣,但 第二強電荷注入能力有機層與第三強電荷注入能力有機層之材質 為摻雜有碳酸鉋之參(8_羥基喹啉)鋁;線(1代表於含二發光單元之 ^聯式有機電激發光元件2中,亦如線b態樣般地採用第一強電 荷注入能力有機層以及第三強電荷注入能力有機層之態樣,但於 陰極與相鄰發光單元間制未經摻雜之參(8_俩);線6代 12 200816860 ίΐΐ二Ϊ光單元之串聯式有機電激發光元件2中,如綠d能揭 严^采電荷注入能力有機層,且於陰極與相鄰發光ΐ元 °本毛月所而之強電荷注入能力(即,至少lxlO·4 Cm2/Vs)。 盘單聯,湖φι_贿光單元,且於單元 4注人能力有機層,相較於僅在陽極與發光單 兀間採用強電何注人能力有機層之僅含單_ fai > 壓下提供較佳之發光效“相==日以 一由上述結果可知’本發明串聯式有機發光元件,可於不需過 =1:壓;=下,有效提升發光效率。此外,由於本發明串 件具有強電荷注人能力有機層,故電極與單元間之電 何k動女定,且單元間之連接界面穩定。 上述僅係舉例說明根據本發明之串聯式有機電激發光元件, f-陽極、—陰極、一第—強電荷注人能力有機層、—第二強電 何注入能力有機m機電激發辟元及—第二有機電激 發光單元。根據前述例示說明,熟習此項技藝者當可知朵本發明 如第4圖所示之第二實施態樣,其為串聯式有機電激發^元件^, ^具-陽,4卜-陰極43、-第-強電荷注人能力有機層45、一 第二強電荷注入能力有機層47、以及複數個有機電激發光單元49。 本發明之第三實施例係一種有機電激發光顯示器,苴係包含 如前實施例所述之複數個串聯式有機電激發光元件^,以^複數個 基板。其中,該複數個基板包含相應之複數個晝素薄膜電晶體, 13 200816860 =複數素細電晶體係與相應複數辦聯式有機電激發光 =牛之一ί極電性連接。藉由此串聯式有機電激發光元件,本發 機電激發光顯示器之操作雜較高及單元連接界面不 女,所,③光效f低落、能量消耗過高,以及增加成本的情形, 且/、内部更具有尚載子移動率之特性。 明之ίίί:施:例舉本發明之實施態樣,以及闡釋本發 η去n、’非用來限制本發明之範嘴。任何熟悉此技術特 i 安排均屬本發明所主張之範 圍’本發明之_關應以巾請專利範圍為準。 【圖式簡單說明】 激發=、ii吏用多重光子發射技術之串聯式有機電 康本發明之第—實施例之示意圖; 元相較之接單—械電激發光單 元相之連接層與單—有機電激發光單 元相^:以:二:’連接層與單-有機電激發光單 元相車^^^^^^接層與單―_激發光單 第4圖係為根據本發明之第二實施例之示意圖。 【主要元件符號說明】 I :串聯式有機電激發光元件 II :陽極 13 ·陰極 200816860 15 :發光層 17 :電荷產生層 2 ··串聯式有機電激發光元件 201 :陽極 203 :陰極 205 :第一強電荷注入能力有機層 207 :第二強電荷注入能力有機層 209 :第一有機電激發光單元 211 :第二有機電激發光單元 4:串聯式有機電激發光元件 41 :陽極 43 :陰極 45 :第一強電荷注入能力有機層 47 :第二強電荷注入能力有機層 49 ··有機電激發光單元
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Claims (1)
- 200816860 十、申請專利範圍: L 一種串聯式有機電激發光元件,其係包含: 一陽極; 一陰極; 一第一強電荷注入能力有機層,設置於兮 間,其係包含一第一材料; μ陽極與該陰極之 間之設置於該陽極與該陰極之 能力電荷注入 該第:弟一強電荷注入能力有機層係與該陽極相鄰,且 β乐―強電何注入能力有機層係與該陰極相鄰。 2· tin之串聯式有機電激發光耕,其中該第一強電荷注 入月b力有機層具有—萬分之-以上之電洞遷移率。 之串聯式有機電激發光元件,其中該第二強電荷注 入此力有機層具有一萬分之一以上之電子遷移率。 4·如請求項1之由 自由古她t串聯式有機電激發光元件’其中該第一材料係選 目由有機物及無機物驗成之群組。 5· 如Ί奢求項彳 自由有機 串聯式有機電激發光元件,其中該第二材料係選 勿及無機物所組成之群組。 一 上5串聯式有機電激發光元件,其中該第一材料包括 ” 且该第二材料包括一 η型摻雜物。 200816860 7·如請求項6之串聯式有機電激發光元件,其中診 功函數大於4.2eV的第-金屬及其化合物,且“=物係 功函數小於4.2eV的第二金屬及其化合物。Λ圭払雜物係 •如請求項1之串聯式有機電激發光元件,其中 激發光單元之結構、光色係相同或不同。 ^一有機電 9· 一種有機電激發光顯示器,其係包含 如請求項1所述之串聯式有機電激發光元件,·以及 晝素薄膜電晶體,與該串聯式有機電激發光元件電性連
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2007
- 2007-02-06 US US11/671,608 patent/US20080074047A1/en not_active Abandoned
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Publication number | Publication date |
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US20080074047A1 (en) | 2008-03-27 |
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