期刊
DISPLAYS
卷 27, 期 4-5, 页码 166-169出版社
ELSEVIER
DOI: 10.1016/j.displa.2006.05.003
关键词
organic light-emitting diode; carrier; hole injection
Organic light-emitting diodes (OLEDs) with multiple hole-trapping-layer (HTL) structures, which consist of N,N'-bis-(1-naphthyl)-N, N'-diphenyl-1, 1'-biphenyl 4,4'-diamine (NPB), bathocuproine (BCP) and tris(8-hydroxy-quinoline)aluminum (Alq(3)) have been fabricated. The emitting zone of the device with the structure of ITO/[NPB/BCP](n)/Alq(3)/LiF/Al can be changed by the number n of HTL. The effect of the multiple HTL structure upon the performance of OLEDs with tris(8-hydroxyquinoline) aluminum as the emitting material has been investigated. Compared with the brightness of the conventional green emitting diode without the multiple HTL structure, that of the diode with periodic number of five has been increased from 2512.8 cd/m(2) to 8661.0 cd/m(2). Such an improvement in the device performance was attributed to the improved hole-electron balance, which can be further attributed to the introduction of the multiple HTL structure. (C) 2006 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据