Highly efficient polymer light-emitting devices using a new phosphorescent material

被引：0
|
作者：
Wang, JH [1 ]
Duan, L [1 ]
Wang, LD [1 ]
Qiu, Y [1 ]
机构：
[1] Tsinghua Univ, Dept Chem, Organ Optoelect Lab, Beijing 100084, Peoples R China
来源：
CHINESE PHYSICS LETTERS | 2003年 / 20卷 / 07期
关键词：
D O I：
暂无
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
A new phosphorescent material bis(2-phenyl-benzoimiazole) acetylacetonato iridium ((PBI)(2)IrAcac) is designed and synthesized. The absorption, photoluminescence and electroluminescence are measured. The polymer-based light-emitting devices which use polyvinylcarbazole (PVK) as host and (PBI)(2)IrAcac as emitter were fabricated. These light-emitting devices show a bright green emission at 548nm. The device ITO/(PBI)(2)IrAcac:PVK/BCP/Alq(3)/Mg:Ag shows a very high efficiency. A peak external quantum efficiency of 21.5cd/A (5.8%) was obtained at 0.1 mA/cm(2). The maximum brightness is 3840 cd/m(2).
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收藏
页码：1141 / 1143
页数：3
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