Efficient electron injection in organic light-emitting diodes using lithium quinolate/Ca/Al cathodes

被引：33
|
作者：
Kim, Sung Hyun
Jang, Jyongsik
Lee, Jun Yeob [1 ]
机构：
[1] Dankook Univ, Dept Polymer Sci & Engn, Seoul 140714, South Korea
[2] Seoul Natl Univ, Sch Chem & Biol Engn, Seoul 151742, South Korea
来源：
APPLIED PHYSICS LETTERS | 2007年 / 91卷 / 10期
关键词：
D O I：
10.1063/1.2779105
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Device performances of green devices with cathode structure of lithium quinolate (Liq)/Ca/Al were investigated and electron injection mechanism was studied using ultraviolet photoelectron spectroscopy. Power efficiency could be improved by 70% by using Liq/Ca/Al cathode structure due to efficient electron injection, and interfacial energy barrier lowering by Liq/Ca/Al metal cathode was observed.
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页数：3
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