Efficient multilayer white polymer light-emitting diodes with aluminum cathodes

被引：60

作者：

Niu, Xiaodi ^{[1
]}

Qin, Chuanjiang ^{[1
]}

Zhang, Baohua ^{[1
]}

Yang, Junwei ^{[1
]}

Xie, Zhiyuan ^{[1
]}

Cheng, Yanxiang ^{[1
]}

Wang, Lixiang ^{[1
]}

机构：

[1] Chinese Acad Sci, Grad Sch, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China

来源：

APPLIED PHYSICS LETTERS | 2007年 / 90卷 / 20期

基金：

中国国家自然科学基金;

关键词：

D O I：

10.1063/1.2741125

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Efficient multilayer white polymer light-emitting diodes (WPLEDs) with aluminum cathodes are fabricated. The multilayer structure is composed of a water soluble hole-injection layer, a toluene-soluble emissive layer, and an alcohol-soluble emissive layer. The polarity difference of the solvents used for spin coating these polymers allows for realization of the multilayer polymer structure. The recombination zone confined at the interface of the two emissive polymers avoids exciton quenching by electrodes, and white emission is realized by harvesting photons emitted from the two emissive polymers. A maximum luminous efficiency of 16.9 cd/A and a power efficiency of 11.1 lm/W are achieved for this WPLED. (C) 2007 American Institute of Physics.

引用

页数：3

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