KR20180098374A - 유기 발광 소자 - Google Patents
유기 발광 소자 Download PDFInfo
- Publication number
- KR20180098374A KR20180098374A KR1020187021594A KR20187021594A KR20180098374A KR 20180098374 A KR20180098374 A KR 20180098374A KR 1020187021594 A KR1020187021594 A KR 1020187021594A KR 20187021594 A KR20187021594 A KR 20187021594A KR 20180098374 A KR20180098374 A KR 20180098374A
- Authority
- KR
- South Korea
- Prior art keywords
- light emitting
- carbon atoms
- hole
- layer
- group
- 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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- 235000021286 stilbenes Nutrition 0.000 description 1
- 125000005504 styryl group Chemical group 0.000 description 1
- 125000004434 sulfur atom Chemical group 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- IFLREYGFSNHWGE-UHFFFAOYSA-N tetracene Chemical compound C1=CC=CC2=CC3=CC4=CC=CC=C4C=C3C=C21 IFLREYGFSNHWGE-UHFFFAOYSA-N 0.000 description 1
- 125000003831 tetrazolyl group Chemical group 0.000 description 1
- 125000001113 thiadiazolyl group Chemical group 0.000 description 1
- 125000000335 thiazolyl group Chemical group 0.000 description 1
- 125000001544 thienyl group Chemical group 0.000 description 1
- 125000001425 triazolyl group Chemical group 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
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Abstract
Description
도 2는 공간 전하 제한 전류에 의한 전류 밀도 분포와 오믹 전류에 의한 전류 밀도 분포를 대비하여 나타내는 모식도이다.
도 3은 En과 xn의 관계를 나타내는 그래프이다.
도 4는 특성 길이 D와 정공 밀도의 관계를 나타내는 그래프이다.
도 5a는 정공 수송층에서의 전류 밀도와 전압의 관계를 나타내는 그래프이다.
도 5b는 정공 밀도 n0과 전압의 관계를 나타내는 그래프이다.
도 6a는 이온 개시제의 혼합 비율을 파라미터로 한 경우의 정공 수송층에 인가한 전압과 전류 밀도의 관계를 나타내는 그래프이다.
도 6b는 도 6a의 전류 밀도의 전압에 관한 미분값을 산출한 결과를 나타내는 그래프이다.
도 7은 홀 온리 소자 및 임피던스 측정계를 나타내는 모식 구성도이다.
도 8은 유기 발광 소자 및 임피던스 측정계를 나타내는 모식 구성도이다.
11 : 유리 기판
12 : 양극
13 : 정공 수송층(오믹 전도성의 경화 수지)
14 : 발광층
15 : 전자 수송층
16 : 음극
17 : 밀봉 유리판
21 : 유리 기판
22 : 양극
23a : 정공 수송층(공간 전하 제한 전도성의 경화 수지)
23b : 정공 수송층(공간 전하 제한 전도성의 경화 수지)
23c : 정공 수송층(오믹 전도성의 경화 수지)
23d : 정공 수송층(오믹 전도성의 경화 수지)
24 : 발광층
25 : 전자 수송층
26 : 음극
27 : 정공 캐리어
28 : 전자 캐리어
Claims (10)
- 양극과, 정공 수송층과, 발광층과, 음극을 구비하며,
상기 정공 수송층은 상기 양극과 상기 발광층 사이에 배치되고,
상기 정공 수송층은 이온 중합 개시제와 경화 수지를 포함하고,
상기 경화 수지는 상기 이온 중합 개시제에 의해 화학 도프되어 발생한 정공 캐리어를 갖고,
상기 정공 수송층은 오믹 전도성을 나타내는, 유기 발광 소자. - 제1항 내지 제3항 중 어느 한 항에 있어서, 유기 발광 소자의 정전 용량이 정공 수송층을 제외한 유기층의 기하 용량으로 부여되는 것을 특징으로 하는 유기 발광 소자.
- 제2항에 있어서, 상기 정공 수송층은 상기 양극 또는 상기 발광층과 접하는 계면 면적의 90% 이상의 영역에서 상기 부등식 (1)을 만족시키는 것을 특징으로 하는 유기 발광 소자.
- 제1항 내지 제5항 중 어느 한 항에 있어서, 상기 양극과 상기 음극 사이에 +0.5V에서부터 -0.5V까지의 범위의 전압을 인가한 조건에서의 상기 유기 발광 소자의 정전 용량이 거의 일정한 것을 특징으로 하는 유기 발광 소자.
- 제1항 내지 제6항 중 어느 한 항에 있어서, 상기 경화 수지는 하기 구조식 (1) 내지 (3) 중 어느 1종류의 단량체를 중합하여 형성된 것을 포함하는 것을 특징으로 하는 유기 발광 소자.
(식 중, R1 내지 R7은 서로 독립적으로 수소, 할로겐, 시아노기, 니트로기, 탄소수 1 내지 22의 직쇄상, 분지상 또는 환상의 알킬기, 탄소수 2 내지 22의 직쇄상, 분지상 또는 환상의 알케닐기, 탄소수 2 내지 22의 직쇄상, 분지상 또는 환상의 알키닐기, 탄소수 6 내지 21의 아릴기, 탄소수 12 내지 20의 헤테로아릴기, 탄소수 7 내지 21의 아르알킬기 및 탄소수 13 내지 20의 헤테로아릴알킬기로 이루어지는 군에서 선택된 관능기이고(이들의 관능기는 비치환 또는 1 혹은 복수의 할로겐으로 치환되어 있다.), m1 및 m2는 서로 독립적으로 0 내지 5의 정수이고, n1 및 n2는 서로 독립적으로 0 내지 4의 정수이다.) - 제1항 내지 제7항 중 어느 한 항에 있어서, 상기 이온 중합 개시제는 하기 구조식 (4) 내지 (6) 중 어느 1종류의 화합물인 것을 특징으로 하는 유기 발광 소자.
(식 중, X-는 Sb6 -, (C6F5)4B-, CF3SO3 -, PF6 -, BF4 -, C4F9SO3 - 또는 CH3C6H4SO3 -이고, R11 내지 R15는 서로 독립적으로 수소, 할로겐, 시아노기, 니트로기, 탄소수 1 내지 22의 직쇄상, 분지상 또는 환상의 알킬기, 탄소수 2 내지 22의 직쇄상, 분지상 또는 환상의 알케닐기, 탄소수 2 내지 22의 직쇄상, 분지상 또는 환상의 알키닐기, 탄소수 6 내지 21의 아릴기, 탄소수 12 내지 20의 헤테로아릴기, 탄소수 7 내지 21의 아르알킬기 및 탄소수 13 내지 20의 헤테로아릴알킬기로 이루어지는 군에서 선택된 관능기이고, s1, s2, t1, t2 및 t3은 서로 독립적으로 0 내지 5의 정수이다.) - 제1항 내지 제8항 중 어느 한 항에 있어서, 상기 이온 중합 개시제와 상기 경화 수지의 질량비는 10:100 이상인 것을 특징으로 하는 유기 발광 소자.
- 제1항 내지 제9항 중 어느 한 항에 있어서, 상기 이온 중합 개시제와 상기 경화 수지의 질량비는 10:100 이상 또한 10000:100 이하인 것을 특징으로 하는 유기 발광 소자.
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| WO2014038071A1 (ja) | 2012-09-07 | 2014-03-13 | パイオニア株式会社 | 有機エレクトロルミネッセンス素子およびその製造方法 |
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| WO2014038071A1 (ja) | 2012-09-07 | 2014-03-13 | パイオニア株式会社 | 有機エレクトロルミネッセンス素子およびその製造方法 |
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