Highly efficient organic light-emitting diodes with a silole-based compound

被引：212

作者：

Chen, HY

Lam, WY

Luo, JD

Ho, YL

Tang, BZ

Zhu, DB

Wong, M ^{[1
]}

Kwok, HS

机构：

[1] Hong Kong Univ Sci & Technol, Dept Elect & Elect Engn, Ctr Display Res, Clear Water Bay, Hong Kong, Peoples R China

[2] Hong Kong Univ Sci & Technol, Dept Chem, Clear Water Bay, Hong Kong, Peoples R China

[3] Chinese Acad Sci, Inst Chem, Beijing 100080, Peoples R China

来源：

APPLIED PHYSICS LETTERS | 2002年 / 81卷 / 04期

关键词：

D O I：

10.1063/1.1495542

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Efficient light emission was obtained in a silole-based organic light-emitting diode. A high luminous current efficiency of 20 cd/A, corresponding to an external quantum efficiency of 8%, was achieved. The apparent violation of the upper theoretical limit of 5.5% for the external quantum efficiency of a singlet emitter is discussed. With a suitably designed cathode, a high power efficiency of similar to14 lm/W was obtained. A strong dependence of the power efficiency on the thickness of Alq(3) layer is also observed and explained. (C) 2002 American Institute of Physics.

引用

页码：574 / 576

页数：3

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