Role of mixed hole transport layer with exciton blocking properties in phosphorescent organic light-emitting diodes

被引：1

作者：

Kim, Sung Hyun ^{[2
]}

Jang, Jyongsik ^{[2
]}

Yook, Kyoung Soo ^{[1
]}

Lee, Jun Yeob ^{[1
]}

机构：

[1] Dankook Univ, Dept Polymer Sci & Engn, Seoul 140714, South Korea

[2] Seoul Natl Univ, Sch Chem & Biol Engn, Seoul 151742, South Korea

来源：

SYNTHETIC METALS | 2009年 / 159卷 / 7-8期

关键词：

Mixed hole transport layer; High efficiency; Exciton blocking; HIGH-EFFICIENCY; DEVICES;

D O I：

10.1016/j.synthmet.2008.11.020

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Improved efficiency in green phosphorescent organic light-emitting diodes using a composite hole transport layer (HTL) with hole transport and exciton blocking function was investigated. Mixed layer of (4.4'-N.N'-dicarbazole)biphenyl (CBP) and N,N'-di(1-naphthyl)-N,N'-diphenylbenzidine (NPB) was used as a HTL and quantum efficiency could be enhanced from 4.3% to 8.1% at 100cd/m(2). Best performances could be obtained in the device with 50% CBP and 50% NPB in the HTL. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：568 / 570

页数：3

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