Efficient electron injection in organic light emitting diodes with Al-Mg alloy cathode

被引：17

作者：

Kim, SY ^{[1
]}

Kim, WK

Kim, KY

Tak, YH

Lee, JL

机构：

[1] Pohang Univ Sci & Technol, Dept Mat Sci & Engn, Pohang 790784, Kyungbuk, South Korea

[2] LG Elect Inc, Kumi 730030, Kyungbuk, South Korea

来源：

ELECTROCHEMICAL AND SOLID STATE LETTERS | 2006年 / 9卷 / 01期

关键词：

D O I：

10.1149/1.2135426

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

We report the enhancement of electron injection using an Al-Mg alloy cathode in organic light emitting diodes (OLEDs). The luminescence value at 15 V drastically increased from 800 to 5800 cd/m(2) as the Al cathode was replaced by an Al-Mg alloy with a 1:1 ratio of Al to Mg in weight percent. Synchrotron radiation photoelectron spectroscopy results showed that the work function of the Al-Mg alloy is lower by 0.2 eV than that of Al. Thus, the energy barrier for electron injection was lowered, reducing the turn-on voltage and increasing the quantum efficiency of OLEDs. (c) 2005 The Electrochemical Society. [DOI: 10.1149/1.2135426] All rights reserved.

引用

页码：H1 / H3

页数：3

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