Efficient blue organic light-emitting diodes based on an oligoquinoline

被引：75

作者：

Kulkarni, AP ^{[1
]}

Gifford, AP

Tonzola, CJ

Jenekhe, SA

机构：

[1] Univ Washington, Dept Chem Engn, Seattle, WA 98195 USA

[2] Univ Washington, Dept Chem, Seattle, WA 98195 USA

来源：

APPLIED PHYSICS LETTERS | 2005年 / 86卷 / 06期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1063/1.1855415

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

An oligoquinoline 6,6'-bis(2,4-diphenylquinoline), with excellent thermal stability and a high glass transition temperature (T-g = 133degreesC, was used as a blue-emitting and electron-transport material to achieve efficient blue electroluminescence. The diodes based on poly(N-vinylcarbazole) hole-transport layer and LiF/Al cathode had a stable blue emission with a peak at 453 nm, chromaticity coordinates at (0.15, 0.12), and a maximum brightness of 925 cd/ m(2) in air. The external quantum efficiency of 4.1% and luminous efficiency of 3.33 cd/A at 100 cd/ m(2) are comparable to the best blue organic light-emitting diodes (OLEDs) in the literature. These results demonstrate that oligoquinolines are promising as both blue emitters and electron-tran sport materials for developing high-efficiency OLEDs with a simpler architecture. 0 2005 American Institute of Physics.

引用

页码：1 / 3

页数：3

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