KR102234085B1 - 유기 전계 발광 소자 - Google Patents
유기 전계 발광 소자 Download PDFInfo
- Publication number
- KR102234085B1 KR102234085B1 KR1020187027538A KR20187027538A KR102234085B1 KR 102234085 B1 KR102234085 B1 KR 102234085B1 KR 1020187027538 A KR1020187027538 A KR 1020187027538A KR 20187027538 A KR20187027538 A KR 20187027538A KR 102234085 B1 KR102234085 B1 KR 102234085B1
- Authority
- KR
- South Korea
- Prior art keywords
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- substituted
- aromatic
- general formula
- carbon atoms
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000010410 layer Substances 0.000 claims abstract description 221
- 125000003118 aryl group Chemical group 0.000 claims abstract description 87
- 150000001875 compounds Chemical class 0.000 claims abstract description 72
- 125000006615 aromatic heterocyclic group Chemical group 0.000 claims abstract description 53
- -1 carbazole compound Chemical class 0.000 claims abstract description 49
- 125000002029 aromatic hydrocarbon group Chemical group 0.000 claims abstract description 38
- 239000000758 substrate Substances 0.000 claims abstract description 24
- 239000012044 organic layer Substances 0.000 claims abstract description 21
- 125000004432 carbon atom Chemical group C* 0.000 claims description 70
- 239000000463 material Substances 0.000 claims description 54
- 230000000903 blocking effect Effects 0.000 claims description 44
- 239000002019 doping agent Substances 0.000 claims description 25
- 125000000609 carbazolyl group Chemical group C1(=CC=CC=2C3=CC=CC=C3NC12)* 0.000 claims description 21
- 238000000034 method Methods 0.000 claims description 18
- 230000003111 delayed effect Effects 0.000 claims description 16
- 229910052751 metal Inorganic materials 0.000 claims description 16
- 239000002184 metal Substances 0.000 claims description 16
- 125000000217 alkyl group Chemical group 0.000 claims description 12
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 12
- 125000004986 diarylamino group Chemical group 0.000 claims description 11
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 claims description 10
- 125000004093 cyano group Chemical group *C#N 0.000 claims description 10
- 125000001153 fluoro group Chemical group F* 0.000 claims description 10
- 239000001257 hydrogen Substances 0.000 claims description 9
- 229910052739 hydrogen Inorganic materials 0.000 claims description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 8
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 8
- 229910052799 carbon Inorganic materials 0.000 claims description 8
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 8
- 125000000449 nitro group Chemical group [O-][N+](*)=O 0.000 claims description 8
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- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 6
- 229910052737 gold Inorganic materials 0.000 claims description 6
- 239000010931 gold Substances 0.000 claims description 6
- 229910052697 platinum Inorganic materials 0.000 claims description 6
- 238000006467 substitution reaction Methods 0.000 claims description 6
- 229910052741 iridium Inorganic materials 0.000 claims description 5
- GKOZUEZYRPOHIO-UHFFFAOYSA-N iridium atom Chemical compound [Ir] GKOZUEZYRPOHIO-UHFFFAOYSA-N 0.000 claims description 5
- 229910052757 nitrogen Inorganic materials 0.000 claims description 5
- 229910052763 palladium Inorganic materials 0.000 claims description 5
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 claims description 4
- 125000004429 atom Chemical group 0.000 claims description 4
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- 229910052703 rhodium Inorganic materials 0.000 claims description 4
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- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 claims description 4
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- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 3
- 150000004696 coordination complex Chemical class 0.000 claims description 3
- 229910052760 oxygen Inorganic materials 0.000 claims description 3
- 239000001301 oxygen Substances 0.000 claims description 3
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- 239000011593 sulfur Substances 0.000 claims description 3
- 150000001721 carbon Chemical class 0.000 claims description 2
- 125000005509 dibenzothiophenyl group Chemical group 0.000 claims description 2
- 125000003277 amino group Chemical group 0.000 claims 1
- 125000006165 cyclic alkyl group Chemical group 0.000 claims 1
- 238000005401 electroluminescence Methods 0.000 claims 1
- 125000001183 hydrocarbyl group Chemical group 0.000 claims 1
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- UJOBWOGCFQCDNV-UHFFFAOYSA-N Carbazole Natural products C1=CC=C2C3=CC=CC=C3NC2=C1 UJOBWOGCFQCDNV-UHFFFAOYSA-N 0.000 abstract description 4
- 238000002347 injection Methods 0.000 description 40
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- 125000001424 substituent group Chemical group 0.000 description 10
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- 238000001704 evaporation Methods 0.000 description 6
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- 238000001748 luminescence spectrum Methods 0.000 description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 5
- 150000001491 aromatic compounds Chemical class 0.000 description 5
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- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
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- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 150000004945 aromatic hydrocarbons Chemical group 0.000 description 4
- 125000003710 aryl alkyl group Chemical group 0.000 description 4
- XSCHRSMBECNVNS-UHFFFAOYSA-N benzopyrazine Natural products N1=CC=NC2=CC=CC=C21 XSCHRSMBECNVNS-UHFFFAOYSA-N 0.000 description 4
- 239000011230 binding agent Substances 0.000 description 4
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 229920001940 conductive polymer Polymers 0.000 description 4
- 125000002704 decyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 4
- 238000000151 deposition Methods 0.000 description 4
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
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- 125000002088 tosyl group Chemical group [H]C1=C([H])C(=C([H])C([H])=C1C([H])([H])[H])S(*)(=O)=O 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 3
- 125000003545 alkoxy group Chemical group 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 3
- IOJUPLGTWVMSFF-UHFFFAOYSA-N benzothiazole Chemical compound C1=CC=C2SC=NC2=C1 IOJUPLGTWVMSFF-UHFFFAOYSA-N 0.000 description 3
- 125000004122 cyclic group Chemical group 0.000 description 3
- 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 3
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- 238000009792 diffusion process Methods 0.000 description 3
- GVEPBJHOBDJJJI-UHFFFAOYSA-N fluoranthene Chemical compound C1=CC(C2=CC=CC=C22)=C3C2=CC=CC3=C1 GVEPBJHOBDJJJI-UHFFFAOYSA-N 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 125000003187 heptyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 3
- 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 3
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- 230000007246 mechanism Effects 0.000 description 3
- 229910044991 metal oxide Inorganic materials 0.000 description 3
- 150000004706 metal oxides Chemical class 0.000 description 3
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 3
- 125000001400 nonyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 3
- 125000002347 octyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 3
- 125000001147 pentyl group Chemical group C(CCCC)* 0.000 description 3
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 3
- 238000005215 recombination Methods 0.000 description 3
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- DXBHBZVCASKNBY-UHFFFAOYSA-N 1,2-Benz(a)anthracene Chemical compound C1=CC=C2C3=CC4=CC=CC=C4C=C3C=CC2=C1 DXBHBZVCASKNBY-UHFFFAOYSA-N 0.000 description 2
- YBYIRNPNPLQARY-UHFFFAOYSA-N 1H-indene Chemical compound C1=CC=C2CC=CC2=C1 YBYIRNPNPLQARY-UHFFFAOYSA-N 0.000 description 2
- AJZDHLHTTJRNQJ-UHFFFAOYSA-N 3-[4-(aminomethyl)-6-(trifluoromethyl)pyridin-2-yl]oxy-N-[2-(tetrazol-1-yl)ethyl]benzamide Chemical compound N1(N=NN=C1)CCNC(C1=CC(=CC=C1)OC1=NC(=CC(=C1)CN)C(F)(F)F)=O AJZDHLHTTJRNQJ-UHFFFAOYSA-N 0.000 description 2
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- SNRUBQQJIBEYMU-UHFFFAOYSA-N Dodecane Natural products CCCCCCCCCCCC SNRUBQQJIBEYMU-UHFFFAOYSA-N 0.000 description 2
- YLQBMQCUIZJEEH-UHFFFAOYSA-N Furan Chemical compound C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- SIKJAQJRHWYJAI-UHFFFAOYSA-N Indole Chemical compound C1=CC=C2NC=CC2=C1 SIKJAQJRHWYJAI-UHFFFAOYSA-N 0.000 description 2
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 description 2
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- ZEEBGORNQSEQBE-UHFFFAOYSA-N [2-(3-phenylphenoxy)-6-(trifluoromethyl)pyridin-4-yl]methanamine Chemical compound C1(=CC(=CC=C1)OC1=NC(=CC(=C1)CN)C(F)(F)F)C1=CC=CC=C1 ZEEBGORNQSEQBE-UHFFFAOYSA-N 0.000 description 2
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- MWPLVEDNUUSJAV-UHFFFAOYSA-N anthracene Chemical compound C1=CC=CC2=CC3=CC=CC=C3C=C21 MWPLVEDNUUSJAV-UHFFFAOYSA-N 0.000 description 2
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- 125000001797 benzyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])* 0.000 description 2
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- 125000001511 cyclopentyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C1([H])[H] 0.000 description 2
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- TXCDCPKCNAJMEE-UHFFFAOYSA-N dibenzofuran Chemical compound C1=CC=C2C3=CC=CC=C3OC2=C1 TXCDCPKCNAJMEE-UHFFFAOYSA-N 0.000 description 2
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- 125000003438 dodecyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 2
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- 125000001434 methanylylidene group Chemical group [H]C#[*] 0.000 description 2
- YTVNOVQHSGMMOV-UHFFFAOYSA-N naphthalenetetracarboxylic dianhydride Chemical compound C1=CC(C(=O)OC2=O)=C3C2=CC=C2C(=O)OC(=O)C1=C32 YTVNOVQHSGMMOV-UHFFFAOYSA-N 0.000 description 2
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- 125000002948 undecyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 2
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- 125000004400 (C1-C12) alkyl group Chemical group 0.000 description 1
- PFNQVRZLDWYSCW-UHFFFAOYSA-N (fluoren-9-ylideneamino) n-naphthalen-1-ylcarbamate Chemical compound C12=CC=CC=C2C2=CC=CC=C2C1=NOC(=O)NC1=CC=CC2=CC=CC=C12 PFNQVRZLDWYSCW-UHFFFAOYSA-N 0.000 description 1
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Abstract
기판 상에 양극, 유기층 및 음극이 적층되어 이루어지는 유기 전계 발광 소자에서, 상기 유기층의 적어도 한 층에, (i) 하기 일반식(1)로 나타내는 카르바졸 화합물과, (ii) 1개 이상의 2가의 카르보란기와 이 카르보란기로 치환되는 방향족기를 가지는 카르보란 화합물을 포함하는 유기 전계 발광 소자.
여기서, L1은 방향족 탄화수소기, 방향족 복소환기, 또는 이들 방향족 환이 2~6개 연결되어 구성되는 연결 방향족기이고, p는 1~3의 수, m은 2~4의 수이다.
Description
2: 양극
3: 정공주입층
4: 정공수송층
5: 발광층
6: 전자수송층
7: 전자주입층
8: 음극
Claims (13)
- 기판 상에 양극, 유기층 및 음극이 적층되어 이루어지는 유기 전계 발광 소자에 있어서, 상기 유기층의 적어도 한 층에, (i) 하기 일반식(1)로 나타내는 화합물과, (ii) 하기 일반식(2)로 나타내는 화합물을 포함하는 것을 특징으로 하는 유기 전계 발광 소자.
여기서, L1은 p가의 치환 혹은 미치환의 탄소 수 6~30의 방향족 탄화수소기, p가의 치환 혹은 미치환의 탄소 수 3~30의 카르바졸릴기 이외의 방향족 복소환기, 또는 이들 치환 혹은 미치환의 방향족 환이 2~6개 연결되어 구성되는 p가의 연결 방향족기이다. R은 각각 독립적으로 수소, 치환 혹은 미치환의 탄소 수 6~30의 방향족 탄화수소기, 치환 혹은 미치환의 탄소 수 3~30의 카르바졸릴기 이외의 방향족 복소환기, 이들 치환 혹은 미치환의 방향족 탄화수소기 혹은 방향족 복소환기의 방향족 환이 2~6개 연결되어 구성되는 연결 방향족기, 탄소 수 1~12의 직쇄상, 분기상, 또는 환상(環狀)의 알킬기, 탄소 수 12~44의 디아릴아미노기, 시아노기, 니트로기, 또는 플루오로기이다.
p는 치환 수이고, 1~3의 정수를 나타낸다. m은 반복의 수이고, 각각 독립적으로 2~4의 정수이다.
여기서, 환 A는 식(a1) 또는 식(b1)로 나타내는 C2B10H10의 2가의 카르보란기를 나타내고, 분자 내에 환 A가 복수 존재하는 경우는 동일하여도 되고 달라도 된다. q는 치환 수이고, 1~4의 정수이며, n은 반복의 수이고, 0~2의 정수이다.
L2는, 치환 혹은 미치환의 탄소 수 6~30의 방향족 탄화수소기, 치환 혹은 미치환의 탄소 수 3~30의 방향족 복소환기, 또는 이들 치환 혹은 미치환의 방향족 탄화수소기 혹은 방향족 복소환기의 방향족 환이 2~6개 연결되어 구성되는 연결 방향족기를 나타낸다.
L3은, 단결합, q+1가의 치환 혹은 미치환의 탄소 수 6~30의 방향족 탄화수소기, q+1가의 치환 혹은 미치환의 탄소 수 3~30의 방향족 복소환기, 또는 이들 치환 혹은 미치환의 방향족 탄화수소기 혹은 방향족 복소환기의 방향족 환이 2~6개 연결되어 구성되는 q+1가의 연결 방향족기를 나타낸다. 단, q=1이면서 n=1인 경우는, 단결합, 방향족 복소환기, 또는 적어도 하나의 방향족 복소환기를 포함하는 연결 방향족기이다.
L4는 독립적으로, 단결합, 2가의 치환 혹은 미치환의 탄소 수 6~30의 방향족 탄화수소기, 2가의 치환 혹은 미치환의 탄소 수 3~30의 방향족 복소환기, 또는 이들 치환 혹은 미치환의 방향족 탄화수소기 혹은 방향족 복소환기의 방향족 환이 2~6개 연결되어 구성되는 2가의 연결 방향족기를 나타낸다.
단, 상기 일반식(1)로 나타내는 화합물과 상기 일반식(2)로 나타내는 화합물을 포함하는 유기층이 발광성 도펀트를 함유하는 발광층인 경우, 상기 일반식(1)로 나타내는 화합물과 상기 일반식(2)로 나타내는 화합물은 호스트 재료로서 함유된다. - 제2항에 있어서,
일반식(1) 중 카르바졸릴기 사이의 모든 결합 구조가 식(c1)과 식(d1)의 양자로 나타내는 결합 구조인 유기 전계 발광 소자. - 제1항에 있어서,
일반식(1)에서, L1이 식(3)~(6) 중 어느 하나로부터 p개의 수소를 제거하여 생기는 p가의 기인 유기 전계 발광 소자.
식(3)~(6) 중 X는 각각 독립적으로 CH 또는 질소를 나타내고, R'는, 각각 독립적으로 수소, 치환 혹은 미치환의 탄소 수 6~30의 방향족 탄화수소기, 치환 혹은 미치환의 탄소 수 3~30의 방향족 복소환기, 탄소 수 1~12의 알킬기, 탄소 수 12~44의 디아릴아미노기, 시아노기, 니트로기, 또는 플루오로기이다. 식(4) 및 (6) 중 Y는 산소 또는 황을 나타내고, 식(5) 중 r은 0~2의 정수를 나타낸다. - 제4항에 있어서,
일반식(1)에서, L1이 식(3), (4) 또는 (5) 중 어느 하나로부터 p개의 수소를 제거하여 생기는 p가의 기인 유기 전계 발광 소자. - 제1항에 있어서,
일반식(1)에서, m의 총합이 2~6의 정수인 유기 전계 발광 소자. - 제1항에 있어서,
일반식(2)에서, 환 A가 식(a1)로 나타내는 C2B10H8의 2가의 카르보란기인 유기 전계 발광 소자. - 제1항에 있어서,
일반식(2)에서, L2와 L3의 환 A에 직접 결합하는 방향족 환이 동일한 유기 전계 발광 소자. - 제1항에 있어서,
일반식(2)에서, L2 및 L3이 치환 혹은 미치환의 디벤조푸라닐기, 또는 치환 혹은 미치환의 디벤조티오페닐기인 유기 전계 발광 소자. - 제1항 내지 제9항 중 어느 한 항에 있어서,
일반식(1)로 나타내는 화합물과 일반식(2)로 나타내는 화합물을 포함하는 유기층이, 발광성 도펀트를 함유하는 발광층, 전자저지층 및 정공저지층으로 이루어지는 군에서 선택되는 적어도 하나의 층인 유기 전계 발광 소자. - 제10항에 있어서,
상기 유기층이, 발광성 도펀트를 함유하는 발광층이고, 일반식(1)로 나타내는 화합물과 일반식(2)로 나타내는 화합물을 호스트 재료로서 함유하는 것을 특징으로 하는 유기 전계 발광 소자. - 제11항에 있어서,
발광성 도펀트가 지연 형광발광성 도펀트인 것을 특징으로 하는 유기 전계 발광 소자. - 제11항에 있어서,
발광성 도펀트가, 루테늄, 로듐, 팔라듐, 은, 레늄, 오스뮴, 이리듐, 백금 및 금에서 선택되는 적어도 하나의 금속을 포함하는 유기 금속 착체인 것을 특징으로 하는 유기 전계 발광 소자.
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