High-temperature operation of an electroluminescent device fabricated using a novel triphenylamine derivative

被引:110
作者
Tokito, S
Tanaka, H
Okada, A
Taga, Y
机构
[1] Toyota Ctrl. R. and D. Labs., Inc., Aichi-gun, Aichi-ken 480-11, 41, A. Y., O. Nagakute, Nagakute-cho
关键词
D O I
10.1063/1.117974
中图分类号
O59 [应用物理学];
学科分类号
摘要
We have fabricated thermally stable organic electroluminescent (EL) devices using a hole transporting material, a tetramer of triphenylamine, and a typical emitting material, tris (8-quinolinolato) aluminum (Alq). The organic EL devices show uniform light emission in a continuous operation up to 140 degrees C without breakdown. A lowering of turn-on voltage for light emission and an increase of luminous efficiency with increasing temperature are found; the significantly low turn-on voltage of 2.1 V and the high luminous efficiency of 1.25 lm/W are obtained at 130 degrees C. Excellent durability of continuous operation is also achieved at the high temperature. (C) 1996 American Institute of Physics.
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页码:878 / 880
页数:3
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