Improved color purity and efficiency in polyfluorene-based light-emitting diodes

被引：7

作者：

Chen, Zhenyu ^{[1
]}

Ma, Dongge ^{[1
]}

机构：

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

来源：

MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY | 2007年 / 141卷 / 1-2期

基金：

中国国家自然科学基金;

关键词：

electroluminescence; polyfluorenes; green emission;

D O I：

10.1016/j.mseb.2007.05.003

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Polyfluorene (PF) is a class of typical blue electroluminescent (EL) material, but it exhibits undesired feature in the green spectral region under operation condition. We investigated the spectral properties of different device structures of poly(9,9-dioctylfluorene) (PFO)-based light-emitting diodes, and found that the interaction between cathode and PFO is the main origination of green emission in EL devices. The general method of inserting a buffer layer between the PFO and cathode can decrease the low energy band emission to purify the color and improve the EL performance of devices. (C) 2007 Elsevier B.V. All rights reserved.

引用

页码：71 / 75

页数：5

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