Operating stability of light-emitting polymer diodes based on poly(p-phenylene vinylene)

被引：129
|
作者：
Carter, JC
Grizzi, I
Heeks, SK
Lacey, DJ
Latham, SG
May, PG
delosPanos, OR
Pichler, K
Towns, CR
Wittmann, HF
机构：
[1] Cambridge Display Technology Ltd.
来源：
APPLIED PHYSICS LETTERS | 1997年 / 71卷 / 01期
关键词：
D O I：
10.1063/1.119483
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We have developed modified poly(p-phenylene vinylene) (PPV) to improve its performance in organic electroluminescent devices. Encapsulated single-layer devices with this PPV on indium-tin oxide and a calcium cathode have been operated in air for > 7000 h at 20 degrees C and > 1100 h at 80 degrees C without noticeable degradation. Devices fabricated with this PPV, a conducting polymer layer as anode, and a sputtered low work-function alloy as cathode have efficiencies of over 2 lm/W, brightnesses of >600 Cd/m(2) at 4 V, and lifetimes of > 1400 h driven at similar to 100 Cd/m(2) initial brightness. (C) 1997 American Institute of Physics.
引用
收藏
页码：34 / 36
页数：3
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