Tris-(8-hydroxyquinoline)aluminum-based organic light-emitting devices with Al/CaF2 cathode:: Performance enhancement and interface electronic structures

被引：56
作者：
Lee, J
Park, Y
Lee, SK
Cho, EJ
Kim, DY
Chu, HY
Lee, H
Do, LM
Zyung, T
机构：
[1] KRISS, Nanosurface Grp, Taejon 305600, South Korea
[2] Chonnam Natl Univ, Dept Phys, Kwangju 500757, South Korea
[3] Hallym Univ, Chem & Phys Div, Chunchon 200702, South Korea
[4] ETRI, Basic Res Lab, Taejon 305350, South Korea
来源：
APPLIED PHYSICS LETTERS | 2002年 / 80卷 / 17期
关键词：
D O I：
10.1063/1.1474602
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The device characteristics and the interface electronic structures of organic light-emitting devices based on tris-(8-hydroxyquinoline)aluminum were investigated with Al/CaF2, Al/LiF, and Al-only cathodes. Similar to the Al/LiF cathode, the Al/CaF2 cathode greatly improved the performance of the device over the Al-only cathode. However, a photoelectron spectroscopy study revealed that despite the performance improvement, the evolution of the new peaks during the Al/CaF2 cathode formation closely resembled those of the Al-only cathode rather than the Al/LiF cathode. (C) 2002 American Institute of Physics.
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页码：3123 / 3125
页数：3
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