THE ELECTRONIC-STRUCTURE AND ENERGY-LEVEL ALIGNMENT OF PORPHYRIN/METAL INTERFACES STUDIED BY ULTRAVIOLET PHOTOELECTRON-SPECTROSCOPY

被引：115
作者：
NARIOKA, S
ISHII, H
YOSHIMURA, D
SEI, M
OUCHI, Y
SEKI, K
HASEGAWA, S
MIYAZAKI, T
HARIMA, Y
YAMASHITA, K
机构：
[1] INST MOLEC SCI,OKAZAKI,AICHI 444,JAPAN
[2] HIROSHIMA UNIV,FAC INTEGRATED ARTS & SCI,DEPT ENVIRONM SCI,HIGASHIHIROSHIMA 724,JAPAN
来源：
APPLIED PHYSICS LETTERS | 1995年 / 67卷 / 13期
关键词：
D O I：
10.1063/1.114370
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Electronic structures of 5, 10, 15, 20-zinctetraphenylporphyrin (ZnTPP)/metal (Au, Ag, Al, Mg) interfaces prepared in ultrahigh vacuum were investigated by ultraviolet photoelectron spectroscopy (UPS), We found that the electronic energy levels of ZnTPP align to the vacuum level of substrate metal, with a constant energy shift of vacuum levels across the interface. These findings cannot be explained by the simple models assuming vacuum level alignment at the interface. We also found that sample exposure to oxygen induces energy level shift in close relation with change of substrate work function at oxygen exposure. (C) 1995 American Institute of Physics.
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页码：1899 / 1901
页数：3
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