Growth of ordered bithiophene layers on the p(2x1)O reconstructed Cu(110) surface

被引：22

作者：

Koller, G ^{[1
]}

Blyth, RIR ^{[1
]}

Sardar, SA ^{[1
]}

Netzer, FP ^{[1
]}

Ramsey, MG ^{[1
]}

机构：

[1] Karl Franzens Univ Graz, Inst Expt Phys, A-8010 Graz, Austria

来源：

SURFACE SCIENCE | 2003年 / 536卷 / 1-3期

基金：

奥地利科学基金会;

关键词：

angle resolved photoemission; near edge extended X-ray absorption fine structure (NEXAFS); thermal desorption spectroscopy; self-assembly; copper; aromatics; low index single crystal surfaces;

D O I：

10.1016/S0039-6028(03)00592-2

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Submonolayer to multilayer coverages of bithiophene on the clean Cu(1 1 0) and the Cu(1 1 0)-p(2 x 1)O reconstructed surface have been investigated comparatively with thermal desorption spectroscopy, angle resolved ultraviolet photoemission spectroscopy (ARUPS) and near edge X-ray absorption fine structure spectroscopy. On the clean Cu(I 10) substrate the bithiophene monolayer is strongly bound via the pi-orbitals and flat lying. After the completion of the wetting layer, further growth occurs in islands with no evidence for a preferred molecular orientation or order. In contrast, on the oxygen reconstructed surface the wetting layer formed has a weaker interaction with the substrate and in this monolayer the molecular plane is tilted with respect to the surface. For the multilayer film on the Cu(1 1 0)-p(2 x 1)O reconstructed surface the ARUPS displays a distinct azimuthal anisotropy. This is suggested to arise from a template effect of the reconstruction. (C) 2003 Elsevier Science B.V. All rights reserved.

引用

页码：155 / 165

页数：11

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