KR20180071850A - 유기 발광 소자 - Google Patents
유기 발광 소자 Download PDFInfo
- Publication number
- KR20180071850A KR20180071850A KR1020160174931A KR20160174931A KR20180071850A KR 20180071850 A KR20180071850 A KR 20180071850A KR 1020160174931 A KR1020160174931 A KR 1020160174931A KR 20160174931 A KR20160174931 A KR 20160174931A KR 20180071850 A KR20180071850 A KR 20180071850A
- Authority
- KR
- South Korea
- Prior art keywords
- substituted
- unsubstituted
- light emitting
- group
- organic light
- Prior art date
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- 229910052760 oxygen Inorganic materials 0.000 claims description 20
- 125000000217 alkyl group Chemical group 0.000 claims description 19
- 125000000623 heterocyclic group Chemical group 0.000 claims description 17
- 229910052717 sulfur Inorganic materials 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 14
- 125000003342 alkenyl group Chemical group 0.000 claims description 13
- 125000000753 cycloalkyl group Chemical group 0.000 claims description 13
- 229910052757 nitrogen Inorganic materials 0.000 claims description 12
- 229910052736 halogen Inorganic materials 0.000 claims description 10
- 150000002367 halogens Chemical class 0.000 claims description 10
- 229910052739 hydrogen Inorganic materials 0.000 claims description 9
- 239000001257 hydrogen Substances 0.000 claims description 9
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- MXSVLWZRHLXFKH-UHFFFAOYSA-N triphenylborane Chemical group C1=CC=CC=C1B(C=1C=CC=CC=1)C1=CC=CC=C1 MXSVLWZRHLXFKH-UHFFFAOYSA-N 0.000 description 1
- 238000001771 vacuum deposition Methods 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
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- NAWDYIZEMPQZHO-UHFFFAOYSA-N ytterbium Chemical compound [Yb] NAWDYIZEMPQZHO-UHFFFAOYSA-N 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
- YVTHLONGBIQYBO-UHFFFAOYSA-N zinc indium(3+) oxygen(2-) Chemical compound [O--].[Zn++].[In+3] YVTHLONGBIQYBO-UHFFFAOYSA-N 0.000 description 1
- HTPBWAPZAJWXKY-UHFFFAOYSA-L zinc;quinolin-8-olate Chemical compound [Zn+2].C1=CN=C2C([O-])=CC=CC2=C1.C1=CN=C2C([O-])=CC=CC2=C1 HTPBWAPZAJWXKY-UHFFFAOYSA-L 0.000 description 1
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Abstract
Description
도 2는, 기판(1), 양극(2), 정공수송층(5), 발광층(3), 전자수송층(6), 및 음극(4)으로 이루어진 유기 발광 소자의 예를 도시한 것이다.
도 3은, 기판(1), 양극(2), 정공주입층(7), 정공수송층(5), 발광층(3), 전자수송층(6), 전자주입층(8) 및 음극(4)으로 이루어진 유기 발광 소자의 예를 도시한 것이다.
도 4는, 본 발명의 실시예 및 비교예의 발광 스펙트럼을 나타낸 것이다.
3: 발광층 4: 음극
5: 정공수송층 6: 전자수송층
7: 정공주입층 8: 전자주입층
Claims (13)
- 양극; 음극; 및 상기 양극과 음극 사이에 발광층을 포함하고,
상기 발광층은 쌍극자 모멘트(dipole moment) 값이 4.5 이하인 화합물을 호스트로 포함하는,
유기 발광 소자.
- 제1항에 있어서,
상기 발광층은 발광 도판트를 포함하고,
상기 호스트와 상기 발광 도판트는 하기 수학식 1을 만족하는,
유기 발광 소자:
[수학식 1]
[fh×DM(호스트) + fd×DM(발광 도판트)] ≤ 4.5
상기 수학식 1에서,
DM(호스트) 및 DM(발광 도판트)는 각각 상기 호스트와 상기 발광 도판트의 쌍극자 모멘트 값이고,
fh는 상기 호스트의 중량을, 상기 호스트 및 상기 발광 도판트의 총 중량으로 나눈 값을 의미하고,
fd는 상기 발광 도판트의 중량을, 상기 호스트 및 상기 발광 도판트의 총 중량으로 나눈 값을 의미한다.
- 제1항에 있어서,
상기 쌍극자 모멘트(dipole moment) 값이 4.5 이하인 화합물은, 하기 화학식 1로 표시되는 화합물, 또는 하기 화학식 2로 표시되는 화합물인,
유기 발광 소자:
[화학식 1]
상기 화학식 1에서,
Ar11 및 Ar12는 각각 독립적으로, 치환 또는 비치환된 C6-60 아릴, 또는 치환 또는 비치환된 N, O 및 S로 구성되는 군으로부터 선택되는 어느 하나 이상의 헤테로 원자를 포함하는 C2-60 헤테로아릴이고,
L11 및 L12는 각각 독립적으로, 단일 결합, 또는 치환 또는 비치환된 C6-60 아릴렌이고,
R1은 각각 독립적으로, 수소; 중수소; 할로겐; 시아노; 니트로; 아미노; 치환 또는 비치환된 C1-60 알킬; 치환 또는 비치환된 C1-60 할로알킬; 치환 또는 비치환된 C1-60 알콕시; 치환 또는 비치환된 C1-60 할로알콕시; 치환 또는 비치환된 C3-60 사이클로알킬; 치환 또는 비치환된 C2-60 알케닐기; 치환 또는 비치환된 C6-60 아릴옥시; 치환 또는 비치환된 C6-60 아릴; 치환 또는 비치환된 아민; 치환 또는 비치환된 실릴; 또는 치환 또는 비치환된 O, N, Si 및 S 중 1개 이상을 포함하는 C2-60 헤테로고리기이고,
h 및 i는 각각 독립적으로 1 또는 2이고,
x는 0 내지 8의 정수이고,
[화학식 2]
상기 화학식 2에서,
Ar21, Ar22 및 Ar23는 각각 독립적으로, 치환 또는 비치환된 C6-60 아릴, 또는 치환 또는 비치환된 N, O 및 S로 구성되는 군으로부터 선택되는 어느 하나 이상의 헤테로 원자를 포함하는 C2-60 헤테로아릴이고,
L21, L22 및 L23은, 각각 독립적으로, 단일 결합, 또는 치환 또는 비치환된 C6-60 아릴렌이고,
R2는 각각 독립적으로, 수소; 중수소; 할로겐; 시아노; 니트로; 아미노; 치환 또는 비치환된 C1-60 알킬; 치환 또는 비치환된 C1-60 할로알킬; 치환 또는 비치환된 C1-60 알콕시; 치환 또는 비치환된 C1-60 할로알콕시; 치환 또는 비치환된 C3-60 사이클로알킬; 치환 또는 비치환된 C2-60 알케닐기; 치환 또는 비치환된 C6-60 아릴옥시; 치환 또는 비치환된 C6-60 아릴; 치환 또는 비치환된 아민; 치환 또는 비치환된 실릴; 또는 치환 또는 비치환된 O, N, Si 및 S 중 1개 이상을 포함하는 C2-60 헤테로고리기이고,
m, n 및 o는 각각 독립적으로 1 또는 2이고,
y는 0 내지 8의 정수이다.
- 제4항에 있어서,
상기 발광층은 상기 화학식 1로 표시되는 화합물 및 상기 화학식 2로 표시되는 화합물을 호스트로 포함하는,
유기 발광 소자.
- 제4항에 있어서,
L11 및 L12는 각각 독립적으로, 단일 결합, 페닐렌, 나프틸렌, 안트라세닐렌, 또는 티오페닐렌인,
유기 발광 소자.
- 제4항에 있어서,
Ar21 및 Ar22는 서로 동일한,
유기 발광 소자.
- 제4항에 있어서,
L21, L22 및 L23은, 각각 독립적으로, 단일 결합, 페닐렌, 또는 나프틸레닐인,
유기 발광 소자.
- 제1항에 있어서, 상기 발광층은 하기 화학식 3으로 표시되는 화합물을 도판트로 포함하는, 유기 발광 소자
[화학식 3]
상기 화학식 3에서,
R1 내지 R8은 각각 독립적으로, 수소, 할로겐, 치환 또는 비치환된 C1-20 알킬, 치환 또는 비치환된 C3-10 사이클로알킬, 치환 또는 비치환된 실릴, 시아노, 또는 치환 또는 비치환된 C6-30 아릴이고,
Ar1 내지 Ar4는 각각 독립적으로 치환 또는 비치환된 C6-30 아릴, 또는 치환 또는 비치환된 O, N, Si 및 S 중 1개 이상을 포함하는 C2-60 헤테로고리기고, 단, Ar1 내지 Ar4는 중 적어도 하나는 하기 화학식 4로 표시된다:
[화학식 4]
상기 화학식 4에서,
X는 O, 또는 S이고,
R9 및 R10은 각각 독립적으로, 수소; 중수소; 할로겐; 시아노; 니트로; 아미노; 치환 또는 비치환된 C1-60 알킬; 치환 또는 비치환된 C1-60 할로알킬; 치환 또는 비치환된 C1-60 알콕시; 치환 또는 비치환된 C1-60 할로알콕시; 치환 또는 비치환된 C3-60 사이클로알킬; 치환 또는 비치환된 C2-60 알케닐; 치환 또는 비치환된 C6-60 아릴옥시; 치환 또는 비치환된 C6-60 아릴; 치환 또는 비치환된 아민; 치환 또는 비치환된 실릴; 또는 치환 또는 비치환된 O, N, Si 및 S 중 1개 이상을 포함하는 C2-60 헤테로고리기이다.
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CN108463535A (zh) | 2018-08-28 |
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