High efficiency blue organic electroluminescent devices having a metal-doped electron injection layer

被引：23

作者：

Kishigami, Y

Tsubaki, K

Kondo, Y

Kido, J ^{[1
]}

机构：

[1] Yamagata Univ, Dept Polymer Sci & Engn, Yamagata 9928510, Japan

[2] Matsushita Elect Works Ltd, Osaka 5718686, Japan

来源：

SYNTHETIC METALS | 2005年 / 153卷 / 1-3期

关键词：

organic semiconductors based on conjugated molecules; electroluminescence; organic/inorganic interfaces;

D O I：

10.1016/j.synthmet.2005.07.272

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report high efficiency blue organic electroluminescent (OEL) devices having a metal-doped electron injection layer at the cathode interface The typical device structure is an indium-tin oxide (IIO) / arylamine derivative (alpha-NPD) / blue emitting distyrylarylene derivative / metal-doped organic electron injection layer / Al The device efficiency is dependent on the work function of the dopant metals and the host organic materials composing the metal-doped layer. A device having Cs-doped bathophenanthroline (Bphen) layer as the cathode interface layer exhibited a high luminous efficiency of 9 lm/W and an external quantum efficiency of 6.5% at luminance of 300 cd/m(2), which are the highest values reported for blue organic EL devices.

引用

页码：241 / 244

页数：4

共 15 条

[1] Investigation of the interface formation between calcium and tris-(8-hydroxy quinoline) aluminum [J].