Efficient white-light-emitting diodes based on poly(N-vinylcarbazole) doped with blue fluorescent and orange phosphorescent materials

被引：144

作者：

Shih, Ping-I ^{[1
]}

Shu, Ching-Fong

Tung, Yung-Liang

Chi, Yun

机构：

[1] Natl Chiao Tung Univ, Dept Appl Chem, Hsinchu 300, Taiwan

[2] Natl Tsing Hua Univ, Dept Chem, Hsinchu 300, Taiwan

来源：

APPLIED PHYSICS LETTERS | 2006年 / 88卷 / 25期

关键词：

D O I：

10.1063/1.2214141

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We have fabricated polymer white-light-emitting devices possessing a single emitting layer containing a hole-transporting host polymer, poly(N-vinylcarbazole), and an electron-transporting auxiliary, 2-(4-biphenylyl)-5-(4-tert-butylphenyl)-1,3,4-oxadiazole, doped with a blue-light-emitting amino-substituted distyrylarylene fluorescent dye and an orange-light-emitting osmium phosphor. The doubly doped device exhibited an intense white emission having Commission Internationale de l'Eclairage coordinates of (0.33, 0.34), a high external quantum efficiency of 6.12% (13.2 cd/A), and a maximum brightness of 11 306 cd/m(2). The color coordinates remained unchanged over a range of operating voltages, even at luminance as high as 1x10(4) cd/m(2). (c) 2006 American Institute of Physics.

引用

页数：3

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