期刊
APPLIED SURFACE SCIENCE
卷 166, 期 1-4, 页码 354-362出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/S0169-4332(00)00449-9
关键词
organic semiconductor interfaces; UPS; XPS; transport
Ultraviolet photoelectron spectroscopy (UPS) and X-ray photoelectron spectroscopy (XPS) have been used to investigate a wide range of metal/organic and organic/organic semiconductor interfaces. UPS was used to determine the binding energies of the highest occupied molecular orbitals and vacuum level positions, while XPS was used to find evidence of chemical interactions at these heterointerfaces. It was found that, with a few exceptions, the vacuum levels align at most organic/organic interfaces, while strong interface dipoles. which abruptly offset the vacuum level, exist at virtually all metal/organic semiconductor interfaces. Furthermore, strong dipoles exist at metal/organic semiconductor interfaces at which the Fermi level is completely unpinned within the semiconductor gap implying that the dipoles are not the result of populating or emptying Fermi level-pinning gap states. (C) 2000 Elsevier Science B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据