Color tunable organic light-emitting diodes using coumarin dopants

被引:0
|
作者
Zhaowu Xu
Guohua Ding
Gaoyu Zhong
Guichuan Xing
Fuyou Li
Wei Huang
He Tian
机构
[1] East China University of Science and Technology,Key Lab for Advance Materials and Institute of Fine Chemicals
[2] Guilin University of Technology,Dept. of Material and Chemical Engineering
[3] Fudan University,Lab of Advanced Materials
来源
关键词
Coumarin; color tunable; organic light-emitting diodes;
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学科分类号
摘要
A series of 4-hydroxy coumarin derivatives, C-1, C-2 and C-3, were synthesized, and their photoluminescence and electroluminescent properties were investigated. The peak emission wavelengths of the dopants can be tuned between 574 and 618 nm, depending upon the electronic properties of the substituents. Multilayer electroluminescent devices were fabricated using C-1, C-2 and C-3 as the dopants. Among these devices, an external quantum efficiency of 3.2% and a maximum brightness of 1.6×104 cd/m2 were achieved.
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页码:249 / 256
页数:7
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