High-performance blue light-emitting diode based on a binaphthyl-containing polyfluorene

被引:86
作者
Jiang, XZ [1 ]
Liu, S [1 ]
Ma, H [1 ]
Jen, AKY [1 ]
机构
[1] Univ Washington, Dept Mat Sci & Engn, Seattle, WA 98195 USA
关键词
D O I
10.1063/1.126174
中图分类号
O59 [应用物理学];
学科分类号
摘要
We report efficient blue electroluminescence (EL) from multilayer polymer light-emitting diodes using a binaphthyl-containing polyfluorene as the emitting layer and a series of thermally polymerized triphenylamine/tetraphenyldiaminobiphenyl-containing polymers as the hole transport layer. The polymer possesses a high photoluminescence quantum efficiency of 44%. The polymer light-emitting diodes exhibit EL emission peak at 420 or 446 nm, depending on the hole transporting materials. The EL reaches maximum brightness and external quantum efficiency of 3070 cd/m(2) and 0.82%, respectively. (C) 2000 American Institute of Physics. [S0003-6951(00)04714-8].
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页码:1813 / 1815
页数:3
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