Highly efficient pure blue electroluminescence from 1,4-bis[2-(3-N-ethylcarbazoryl)vinyl]benzene

被引：43

作者：

Wu, YZ ^{[1
]}

Zheng, XY ^{[1
]}

Zhu, WQ ^{[1
]}

Sun, RG ^{[1
]}

Jiang, XY ^{[1
]}

Zhang, ZL ^{[1
]}

Xu, SH ^{[1
]}

机构：

[1] Shanghai Univ, Dept Mat Sci, Shanghai 201800, Peoples R China

来源：

APPLIED PHYSICS LETTERS | 2003年 / 83卷 / 24期

关键词：

D O I：

10.1063/1.1630855

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

An efficient blue organic light-emitting diode with 1,4-bis[2-(3-N-ethylcarbazoryl)vinyl]benzene doped into 4,4(')-N,N-'-dicarbazole-biphyenyl is reported. Maximum luminance and external quantum efficiency are 8500 cd/m(2) and 2.6%. CIE-1931 coordinates are x=0.15, y=0.16. The device performance was further improved by introducing bis(2-methyl-8quinolinato)4-phenylphenolate aluminum to assist electron injection. The maximum luminance and quantum efficiency reached 11000 cd/m(2) and 3.3%, respectively. Foster energy transfer and especially a carrier trapping mechanism are considered to dominate in the process of electroluminescence. (C) 2003 American Institute of Physics.

引用

页码：5077 / 5079

页数：3

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