Horizontal molecular orientation in vacuum-deposited organic amorphous films of hole and electron transport materials

被引：132

作者：

Yokoyama, Daisuke ^{[1
]}

Sakaguchi, Akio ^{[2
]}

Suzuki, Michio ^{[2
]}

Adachi, Chihaya ^{[1
]}

机构：

[1] Kyushu Univ, Ctr Future Chem, Nishi Ku, Fukuoka 8190395, Japan

[2] JA Woollam Japan Corp, Tokyo 1670051, Japan

来源：

APPLIED PHYSICS LETTERS | 2008年 / 93卷 / 17期

关键词：

D O I：

10.1063/1.2996258

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Using wide-range variable angle spectroscopic ellipsometry, the authors demonstrate large optical uniaxial anisotropy of vacuum-deposited organic amorphous films of hole and electron transport materials having long or planar molecular structures. The ordinary refractive indices and extinction coefficients were higher than the extraordinary ones, revealing that the molecules in the amorphous films are horizontally oriented. The horizontal orientation requires significant modifications in the understanding of both the electrical and optical characteristics of amorphous films when we use materials having long or planar molecular structures. (C) 2008 American Institute of Physics. [DOI: 10.1063/1.2996258]

引用

页数：3

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[21] Thermal stability in oligomeric triphenylamine/tris(8-quinolinolato) aluminum electroluminescent devices [J].