A new coumarin derivative used as emitting layer in organic light-emitting diodes

被引：22

作者：

Zhang, RF ^{[1
]}

Zheng, HP ^{[1
]}

Shen, JC ^{[1
]}

机构：

[1] Jilin Univ, Dept Chem, Key Lab Supramol Struct & Spect, Changchun 130023, Peoples R China

来源：

SYNTHETIC METALS | 1999年 / 106卷 / 03期

关键词：

light-emitting diodes; coumarin derivative; conformational transition;

D O I：

10.1016/S0379-6779(99)00126-5

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The photoluminescence and electroluminescence properties of a new coumarin derivative N-(7-diethylamino-coumarin-3-carboxyl)-N,N'-dicyclohexylurea (DCDU) were investigated. The compound showed a maximum quantum efficiency of 0.943 for 400 nm excitation. The cleavage of intramolecular hydrogen bond led to conformational transition of coumarin derivative during vacuum deposition, and the deposited film was formed with less crystalline phase. A stable yellow light emitted from a triple-layer EL device with a maximum brightness of 1100 cd/m(2) and an external efficiency of 0.4%. (C) 1999 Elsevier Science S.A. All rights reserved.

引用

页码：157 / 160

页数：4

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