KR101419809B1 - 인버티드 유기 발광 소자 및 이를 포함하는 디스플레이 장치 - Google Patents
인버티드 유기 발광 소자 및 이를 포함하는 디스플레이 장치 Download PDFInfo
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- KR101419809B1 KR101419809B1 KR1020120018060A KR20120018060A KR101419809B1 KR 101419809 B1 KR101419809 B1 KR 101419809B1 KR 1020120018060 A KR1020120018060 A KR 1020120018060A KR 20120018060 A KR20120018060 A KR 20120018060A KR 101419809 B1 KR101419809 B1 KR 101419809B1
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- KR
- South Korea
- Prior art keywords
- layer
- light emitting
- bottom electrode
- electrode
- hole
- Prior art date
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- 239000002019 doping agent Substances 0.000 claims abstract description 67
- 239000000463 material Substances 0.000 claims abstract description 63
- 230000005525 hole transport Effects 0.000 claims abstract description 32
- 238000000034 method Methods 0.000 claims description 52
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- IEQIEDJGQAUEQZ-UHFFFAOYSA-N phthalocyanine Chemical class N1C(N=C2C3=CC=CC=C3C(N=C3C4=CC=CC=C4C(=N4)N3)=N2)=C(C=CC=C2)C2=C1N=C1C2=CC=CC=C2C4=N1 IEQIEDJGQAUEQZ-UHFFFAOYSA-N 0.000 claims description 26
- 238000002347 injection Methods 0.000 claims description 22
- 239000007924 injection Substances 0.000 claims description 22
- DKHNGUNXLDCATP-UHFFFAOYSA-N dipyrazino[2,3-f:2',3'-h]quinoxaline-2,3,6,7,10,11-hexacarbonitrile Chemical compound C12=NC(C#N)=C(C#N)N=C2C2=NC(C#N)=C(C#N)N=C2C2=C1N=C(C#N)C(C#N)=N2 DKHNGUNXLDCATP-UHFFFAOYSA-N 0.000 claims description 14
- 229910052751 metal Inorganic materials 0.000 claims description 14
- 239000002184 metal Substances 0.000 claims description 14
- 239000000758 substrate Substances 0.000 claims description 13
- 239000011787 zinc oxide Substances 0.000 claims description 13
- 239000010409 thin film Substances 0.000 claims description 12
- 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 claims description 10
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 9
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- IXHWGNYCZPISET-UHFFFAOYSA-N 2-[4-(dicyanomethylidene)-2,3,5,6-tetrafluorocyclohexa-2,5-dien-1-ylidene]propanedinitrile Chemical compound FC1=C(F)C(=C(C#N)C#N)C(F)=C(F)C1=C(C#N)C#N IXHWGNYCZPISET-UHFFFAOYSA-N 0.000 claims description 8
- LBGCRGLFTKVXDZ-UHFFFAOYSA-M ac1mc2aw Chemical compound [Al+3].[Cl-].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 LBGCRGLFTKVXDZ-UHFFFAOYSA-M 0.000 claims description 8
- MPMSMUBQXQALQI-UHFFFAOYSA-N cobalt phthalocyanine Chemical compound [Co+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 MPMSMUBQXQALQI-UHFFFAOYSA-N 0.000 claims description 8
- PMJMHCXAGMRGBZ-UHFFFAOYSA-N subphthalocyanine Chemical compound N1C(N=C2C3=CC=CC=C3C(=N3)N2)=C(C=CC=C2)C2=C1N=C1C2=CC=CC=C2C3=N1 PMJMHCXAGMRGBZ-UHFFFAOYSA-N 0.000 claims description 8
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- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 5
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- 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 claims description 5
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- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 claims description 4
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- 229910052744 lithium Inorganic materials 0.000 claims description 4
- 229910052700 potassium Inorganic materials 0.000 claims description 4
- 229910052701 rubidium Inorganic materials 0.000 claims description 4
- 229910052708 sodium Inorganic materials 0.000 claims description 4
- 239000012780 transparent material Substances 0.000 claims description 4
- YVTHLONGBIQYBO-UHFFFAOYSA-N zinc indium(3+) oxygen(2-) Chemical compound [O--].[Zn++].[In+3] YVTHLONGBIQYBO-UHFFFAOYSA-N 0.000 claims description 4
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 claims description 3
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- 239000011368 organic material Substances 0.000 claims description 3
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- YFCSASDLEBELEU-UHFFFAOYSA-N 3,4,5,6,9,10-hexazatetracyclo[12.4.0.02,7.08,13]octadeca-1(18),2(7),3,5,8(13),9,11,14,16-nonaene-11,12,15,16,17,18-hexacarbonitrile Chemical compound N#CC1=C(C#N)C(C#N)=C2C3=C(C#N)C(C#N)=NN=C3C3=NN=NN=C3C2=C1C#N YFCSASDLEBELEU-UHFFFAOYSA-N 0.000 claims description 2
- APHGZSBLRQFRCA-UHFFFAOYSA-M indium(1+);chloride Chemical compound [In]Cl APHGZSBLRQFRCA-UHFFFAOYSA-M 0.000 claims description 2
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- PIBCCAGDUJDWAH-UHFFFAOYSA-N 2,3,5-triphenylquinoxaline Chemical compound C1=CC=CC=C1C1=CC=CC2=NC(C=3C=CC=CC=3)=C(C=3C=CC=CC=3)N=C12 PIBCCAGDUJDWAH-UHFFFAOYSA-N 0.000 description 6
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- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 4
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 4
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- 230000004888 barrier function Effects 0.000 description 4
- 229910052790 beryllium Inorganic materials 0.000 description 4
- NIHNNTQXNPWCJQ-UHFFFAOYSA-N fluorene Chemical compound C1=CC=C2CC3=CC=CC=C3C2=C1 NIHNNTQXNPWCJQ-UHFFFAOYSA-N 0.000 description 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
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- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 description 4
- 239000011135 tin Substances 0.000 description 4
- 125000001989 1,3-phenylene group Chemical group [H]C1=C([H])C([*:1])=C([H])C([*:2])=C1[H] 0.000 description 3
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- XSUNFLLNZQIJJG-UHFFFAOYSA-N 2-n-naphthalen-2-yl-1-n,1-n,2-n-triphenylbenzene-1,2-diamine Chemical compound C1=CC=CC=C1N(C=1C(=CC=CC=1)N(C=1C=CC=CC=1)C=1C=C2C=CC=CC2=CC=1)C1=CC=CC=C1 XSUNFLLNZQIJJG-UHFFFAOYSA-N 0.000 description 3
- VQGHOUODWALEFC-UHFFFAOYSA-N 2-phenylpyridine Chemical compound C1=CC=CC=C1C1=CC=CC=N1 VQGHOUODWALEFC-UHFFFAOYSA-N 0.000 description 3
- OGGKVJMNFFSDEV-UHFFFAOYSA-N 3-methyl-n-[4-[4-(n-(3-methylphenyl)anilino)phenyl]phenyl]-n-phenylaniline Chemical group CC1=CC=CC(N(C=2C=CC=CC=2)C=2C=CC(=CC=2)C=2C=CC(=CC=2)N(C=2C=CC=CC=2)C=2C=C(C)C=CC=2)=C1 OGGKVJMNFFSDEV-UHFFFAOYSA-N 0.000 description 3
- 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 3
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- 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 3
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- OSQXTXTYKAEHQV-WXUKJITCSA-N 4-methyl-n-[4-[(e)-2-[4-[4-[(e)-2-[4-(4-methyl-n-(4-methylphenyl)anilino)phenyl]ethenyl]phenyl]phenyl]ethenyl]phenyl]-n-(4-methylphenyl)aniline Chemical compound C1=CC(C)=CC=C1N(C=1C=CC(\C=C\C=2C=CC(=CC=2)C=2C=CC(\C=C\C=3C=CC(=CC=3)N(C=3C=CC(C)=CC=3)C=3C=CC(C)=CC=3)=CC=2)=CC=1)C1=CC=C(C)C=C1 OSQXTXTYKAEHQV-WXUKJITCSA-N 0.000 description 1
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- 229920001609 Poly(3,4-ethylenedioxythiophene) Polymers 0.000 description 1
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- 239000002585 base Substances 0.000 description 1
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- KBQHZAAAGSGFKK-UHFFFAOYSA-N dysprosium atom Chemical compound [Dy] KBQHZAAAGSGFKK-UHFFFAOYSA-N 0.000 description 1
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- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
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- 239000011229 interlayer Substances 0.000 description 1
- 229910052741 iridium Inorganic materials 0.000 description 1
- CECAIMUJVYQLKA-UHFFFAOYSA-N iridium 1-phenylisoquinoline Chemical compound [Ir].C1=CC=CC=C1C1=NC=CC2=CC=CC=C12.C1=CC=CC=C1C1=NC=CC2=CC=CC=C12.C1=CC=CC=C1C1=NC=CC2=CC=CC=C12 CECAIMUJVYQLKA-UHFFFAOYSA-N 0.000 description 1
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- 238000004020 luminiscence type Methods 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- YPJRZWDWVBNDIW-UHFFFAOYSA-N n,n-diphenyl-4-[2-[4-[4-[2-[4-(n-phenylanilino)phenyl]ethenyl]phenyl]phenyl]ethenyl]aniline Chemical group C=1C=C(N(C=2C=CC=CC=2)C=2C=CC=CC=2)C=CC=1C=CC(C=C1)=CC=C1C(C=C1)=CC=C1C=CC(C=C1)=CC=C1N(C=1C=CC=CC=1)C1=CC=CC=C1 YPJRZWDWVBNDIW-UHFFFAOYSA-N 0.000 description 1
- QEFYFXOXNSNQGX-UHFFFAOYSA-N neodymium atom Chemical compound [Nd] QEFYFXOXNSNQGX-UHFFFAOYSA-N 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 238000005215 recombination Methods 0.000 description 1
- 230000006798 recombination Effects 0.000 description 1
- 229910052706 scandium Inorganic materials 0.000 description 1
- SIXSYDAISGFNSX-UHFFFAOYSA-N scandium atom Chemical compound [Sc] SIXSYDAISGFNSX-UHFFFAOYSA-N 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 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
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- GPPXJZIENCGNKB-UHFFFAOYSA-N vanadium Chemical compound [V]#[V] GPPXJZIENCGNKB-UHFFFAOYSA-N 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
- 229910052727 yttrium Inorganic materials 0.000 description 1
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 description 1
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Abstract
Description
도 2는 다른 일 구현예에 따른 유기 발광 소자의 구조를 개략적으로 나타낸 도면이다.
도 3은 다른 일 구현예에 따른 유기 발광 소자의 구조를 개략적으로 나타낸 도면이다.
도 4는 다른 일 구현예에 따른 유기 발광 소자의 구조를 개략적으로 나타낸 도면이다.
도 5는 참조예 1 내지 3에 따른 소자의 전압에 따른 전류 밀도를 나타낸 그래프이다.
도 6은 실시예 1 및 비교예 1에 따른 유기 발광 소자의 전압에 따른 전류 밀도 및 휘도를 나타낸 그래프이다.
도 7은 실시예 1 및 비교예 1에 따른 유기 발광 소자의 전류 밀도에 따른 효율을 나타낸 그래프이다.
도 8은 실시예 1 내지 3에 따른 유기 발광 소자와 비교예 1 및 2에 따른 에 따른 유기 발광 소자의 전압과 전류 밀도의 관계를 나타낸 그래프이다.
도 9는 실시예 1 내지 3에 따른 유기 발광 소자와 비교예 1 및 2에 따른 에 따른 유기 발광 소자의 전압과 휘도 관계를 나타낸 그래프이다.
121, 221, 321, 421: 바닥 전극
122, 222, 322, 422: pn-접합층
123, 223, 323, 323: p-도핑층
323′, 423′: p-도펀트층
124, 224, 324, 424: n-도핑층
125, 225, 325, 425: 전자 수송층
126, 226, 326, 426: 발광층
127, 227, 327, 427: 정공 수송층
128, 228, 328, 428: 정공 생성층
228′, 428′: 제1층
228˝, 428˝: 제2층
129, 229, 329, 429: 상부 전극
Claims (19)
- 바닥 전극,
상기 바닥 전극과 대향된 상부 전극,
상기 바닥 전극과 상기 상부 전극 사이에 개재된 적어도 하나의 발광층,
상기 발광층과 상기 바닥 전극 사이에 개재된 전자 수송층,
상기 발광층과 상기 상부 전극 사이에 개재된 정공 수송층,
상기 전자 수송층과 상기 바닥 전극 사이에 개재되며, p-도핑층 및 상기 p-도핑층 상에 형성된 n-도핑층을 포함한 유기물 pn-접합층, 및
상기 정공 수송층과 상기 상부 전극 사이에 개재된 정공 생성층을 포함하고;
상기 p-도핑층이 제1 정공 수송 재료 및 p-도펀트를 포함하고,
상기 유기물 pn-접합층은 전자 주입층인 유기 발광 소자. - 바닥 전극,
상기 바닥 전극과 대향된 상부 전극,
상기 바닥 전극과 상기 상부 전극 사이에 개재된 적어도 하나의 발광층,
상기 발광층과 상기 바닥 전극 사이에 개재된 전자 수송층,
상기 발광층과 상기 상부 전극 사이에 개재된 정공 수송층,
상기 전자 수송층과 상기 바닥 전극 사이에 개재되며, p-도핑층, 상기 p-도핑층 상에 형성된 p-도펀트층 및 상기 p-도펀트층 상에 형성된 n-도핑층을 포함한 유기물 pn-접합층, 및
상기 정공 수송층과 상기 상부 전극 사이에 개재된 정공 생성층을 포함하고;
상기 p-도핑층이 제1 정공 수송 재료 및 p-도펀트를 포함하고,
상기 유기물 pn-접합층은 전자 주입층인 유기 발광 소자. - 제1항 또는 제2항에 있어서,
상기 바닥 전극의 일함수가 -3.0 eV 내지 -6.0 eV인 유기 발광 소자. - 제1항 또는 제2항에 있어서,
상기 p-도펀트가 MoO3, MoO2, WO3, V2O5, ReO3, NiO, Mo(tfd)3, HAT-CN(헥사아자트리페닐렌 헥사카보니트릴) 및 F4-TCNQ(테트라플루오로-테트라시아노-퀴노디메탄) 중 적어도 1종을 포함하는 유기 발광 소자. - 제1항 또는 제2항에 있어서,
상기 p-도핑층이 상기 제1 정공 수송 재료 및 상기 p-도펀트를 99.9:0.1 내지 75:25의 중량비로 포함하는 유기 발광 소자. - 제1항 또는 제2항에 있어서,
상기 제1 정공 수송 재료가 프탈로시아닌 유도체를 포함하는 유기 발광 소자. - 제6항에 있어서,
상기 프탈로시아닌 유도체가 구리 프탈로시아닌(CuPc), 주석 프탈로시아닌(SnPc), 클로로알루미늄 프탈로시아닌(ClAlPc), 클로로인듐 프탈로시아닌(ClInPc), 서브프탈로시아닌(SubPc), 코발트 프탈로시아닌(CoPc) 및 아연 프탈로시아닌(ZnPc) 중 적어도 1종을 포함하는 유기 발광 소자. - 제1항 또는 제2항에 있어서,
상기 n-도핑층이 전자 수송 재료 및 n-도펀트를 포함하는 유기 발광 소자. - 제8항에 있어서,
상기 n-도펀트가 리튬(Li), 나트륨(Na), 칼륨(K), 루비듐(Rb), 세슘(Cs), 마그네슘(Mg), 칼슘(Ca), 스트론튬(Sr), 바륨(Ba), 란타늄(La), 세륨(Ce), 네오디뮴(Nd), 사마륨(Sm), 유로퓸(Eu), 테르븀(Tb), 디스프로슘(Dy) 및 이테르븀(Yb) 중 적어도 1종의 금속; 상기 금속의 질화물; 상기 금속의 탄산염(carbonate); 및 상기 금속의 착물; 중 적어도 1종을 포함하는 유기 발광 소자. - 제8항에 있어서,
상기 n-도펀트가 Li2CO3, Na2CO3, K2CO3, Cs2CO3, Rb2CO3 및 Ba2CO3 중 적어도 1종을 포함하는 유기 발광 소자. - 제8항에 있어서,
상기 n-도핑층이 상기 전자 수송 재료 및 상기 n-도펀트를 99.9:0.1 내지 75:25의 중량비로 포함하는 유기 발광 소자. - 제1항 또는 제2항에 있어서,
상기 정공 생성층이 제2 정공 수송 재료; 및 MoO3, MoO2, WO3, V2O5, ReO3, NiO, Mo(tfd)3, HAT-CN 및 F4-TCNQ 중 적어도 1종;을 포함하는 유기 발광 소자. - 제12항에 있어서,
상기 정공 생성층이 상기 제2 정공 수송 재료 및 상기 MoO3, MoO2, WO3, V2O5, ReO3, NiO, Mo(tfd)3, HAT-CN 및 F4-TCNQ 중 적어도 1종을 99.9:0.1 내지 75:25의 중량비로 포함하는 유기 발광 소자. - 제1항 또는 제2항에 있어서,
상기 정공 생성층이, 제2 정공 수송 재료를 포함하는 제1층; 및 상기 제1층 상에 형성되며 MoO3, MoO2, WO3, V2O5, ReO3, NiO, Mo(tfd)3, HAT-CN 및 F4-TCNQ 중 적어도 1종으로 이루어진 제2층;을 포함하는 이중층(bilayer)인 유기 발광 소자. - 제14항에 있어서,
상기 제1층의 두께가 10Å 내지 500Å이고, 상기 제2층의 두께가 10Å 내지 50Å인 유기 발광 소자. - 제1항 또는 제2항에 있어서,
상기 바닥 전극이 ITO(인듐주석산화물), IZO(인듐아연산화물), ZnO(아연 산화물), 그래핀(graphene), Ag 및 Al 중 적어도 1종을 포함하는 유기 발광 소자. - 제1항 또는 제2항에 있어서,
상기 바닥 전극이 투명한 물질을 포함하는 배면 발광형인 유기 발광 소자. - 제1항 또는 제2항에 있어서,
상기 상부 전극이 투명한 물질을 포함하는 전면 발광형인 유기 발광 소자. - 기판, 상기 기판 상에 형성되며 소스 전극, 드레인 전극, 산화물 반도체층, 게이트 전극, 및 게이트 절연층을 포함하는 n형 박막 트랜지스터; 상기 n형 박막 트랜지스터 상에 형성된 절연층; 및 상기 절연층 상에 형성된 제1항 또는 제2항의 유기 발광 소자를 구비하고,
상기 유기 발광 소자의 상기 바닥 전극이 상기 소스 전극 및 드레인 전극 중 하나와 전기적으로 연결된 디스플레이 장치.
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