Achieving high-efficiency polymer white-light-emitting devices

被引：403

作者：

Huang, JS ^{[1
]}

Li, G ^{[1
]}

Wu, E ^{[1
]}

Xu, QF ^{[1
]}

Yang, Y ^{[1
]}

机构：

[1] Univ Calif Los Angeles, Dept Mat Sci & Engn, Los Angeles, CA 90095 USA

来源：

ADVANCED MATERIALS | 2006年 / 18卷 / 01期

关键词：

D O I：

10.1002/adma.200501105

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A method was developed to enhance the efficiency of white polymer light emitting devices (WPLEDs) by introducing an electron injection and hole-blocking layer, and using a polymer blend system as the active material. WPLEDs can be realized by the incomplete transfer of energy from poly(9,9-dioctylfluorene) (PFO) to poly[2-methoxy-5-(2'-ethyl-hexyloxy)-1,4-phenylene vinylene] (MEH-PPV), and the color was modulated from yellow to white by changing the concentration of MEH-PPV. The device shows improved performance and highest power efficiency of 16 lm W-1. The method can also be used to achieve ultrahigh efficient polymer LEDs.

引用

页码：114 / 117

页数：4

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