標題: Efficient white-light-emitting diodes based on poly(N-vinylcarbazole) doped with blue fluorescent and orange phosphorescent materials
作者: Shih, Ping-I
Shu, Ching-Fong
Tung, Yung-Liang
Chi, Yun
應用化學系
Department of Applied Chemistry
公開日期: 19-六月-2006
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.
URI: http://dx.doi.org/10.1063/1.2214141
http://hdl.handle.net/11536/12140
ISSN: 0003-6951
DOI: 10.1063/1.2214141
期刊: APPLIED PHYSICS LETTERS
Volume: 88
Issue: 25
結束頁: 
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