Highly stable organic light-emitting devices with a uniformly mixed hole transport layer

被引：25
|
作者：
Tsai, CH [1 ]
Liao, CH
Lee, MT
Chen, CH
机构：
[1] Natl Chiao Tung Univ, Dept Appl Chem, Hsinchu 300, Taiwan
[2] Natl Chiao Tung Univ, Display Inst, Microelect & Informat Syst Res Ctr, Hsinchu 300, Taiwan
来源：
APPLIED PHYSICS LETTERS | 2005年 / 87卷 / 24期
关键词：
D O I：
10.1063/1.2137453
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Highly stable organic light-emitting devices were made by using a uniformly mixed hole transport layer (UM-HTL) composed of a mixture of 2-methyl-9,10-di(2-naphthyl)anthracene (MADN) and N,N-bis(1-naphthyl)-N,N-'-diphenyl,1,1(')-biphenyl-4,4(')-diamine (NPB) in a 3:7 (MADN:NPB) ratio. The lifetime of 10-(2-benzothiazolyl)-1,1,7,7-tetramethyl-2,3,6,7-tetrahydro-1H,5H,11H-benzo[l]-pyrano[6,7,8-ij]quinolizin-11-one doped green device with UM-HTL can be greatly improved to 2.7 times longer than that of the conventional device (NPB based HTL) without impacting on its driving voltage and emissive color significantly. This improvement in stability can be attributed to the fact that the unstable [Alq(3)(+)] species formed by electro-oxidation have been effectively suppressed.
引用
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页码：1 / 3
页数：3
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