UPS fine structures of highest occupied band in vanadyl-phthalocyanine ultrathin film

被引：31

作者：

Fukagawa, H ^{[1
]}

Yamane, H

Kera, S

Okudaira, KK

Ueno, N

机构：

[1] Chiba Univ, Fac Engn, Inage Ku, Chiba 2638522, Japan

[2] Inst Mol Sci, Okazaki, Aichi 4448585, Japan

[3] Chiba Univ, Ctr Frontier Sci, Inage Ku, Chiba 2638522, Japan

来源：

JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA | 2005年 / 144卷

关键词：

organic send conductors; organic/metal interfaces; phthalocyanine;

D O I：

10.1016/j.elspec.2005.01.083

中图分类号：

O433 [光谱学];

学科分类号：

0703 ; 070302 ;

摘要：

Ultraviolet photoelectron spectra were measured for vanadyl phthalocyanine (VOPc) uhrathin films prepared on graphite to study effects of the molecular orientation and the electric dipole layer on the organic electronic states. VOPc has a permanent electric dipole perpendicular to the molecular plane, hence a well-defined electric dipole layer could be intentionally prepared by using the oriented monolayer. The observed binding-energy difference of the highest occupied molecular orbital (HOMO) bands between the oriented monolayer and the double layer was found to agree with the vacuum level shift, leading to a conclusion that the molecular energy level with respect to the substrate Fermi level is changed when the molecule is in the electric dipole layer. (c) 2005 Elsevier B.V. All rights reserved.

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收藏

页码：475 / 477

页数：3

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