High performance top-emitting organic light-emitting diodes with copper iodide-doped hole injection layer

被引：58

作者：

Lee, Jae-Hyun

Leem, Dong-Seok

Kim, Jang-Joo ^{[1
]}

机构：

[1] Seoul Natl Univ, Dept Mat Sci & Engn, Seoul 151744, South Korea

来源：

ORGANIC ELECTRONICS | 2008年 / 9卷 / 05期

关键词：

top-emitting OLEDs; CuI; Ag electrode; Lambertian;

D O I：

10.1016/j.orgel.2008.05.011

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Efficient top-emitting organic light-emitting diodes were fabricated using copper iodide (CuI) doped 1,4-bis[N-(1-naphthyl)-N'-phenylamino]-4,4'-diamine (NPB) as a hole injection layer and Ir(PPY)(3) doped CBP as the emitting layer. CuI doped NPB layer functions as an efficient p-doped hole injection layer and significantly improves hole injection from a silver bottom electrode. The top-emitting device shows high current efficiency of 69 cd/A with Lambertian emission pattern. The enhanced hole injection is originated from the formation of the charge transfer complex between Cut and NPB. (C) 2008 Elsevier B.V. All rights reserved.

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页码：805 / 808

页数：4

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