Photoemission spectroscopy of germanium nanocrystal films

被引：15

作者：

Bostedt, C

van Buuren, T

Willey, TM

Franco, N

Möller, T

Terminello, L

机构：

[1] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA

[2] Univ Hamburg, Inst Expt Phys 2, D-2000 Hamburg, Germany

[3] DESY, Hamburger Synchrontronstschlungslab HASYLAB, D-2000 Hamburg, Germany

来源：

JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA | 2002年 / 126卷 / 1-3期

关键词：

germanium; nanocrystal; nanoparticle; cluster; photoemission; Ge; 3D; plasmon; valence band; surface; structural disorder;

D O I：

10.1016/S0368-2048(02)00146-9

中图分类号：

O433 [光谱学];

学科分类号：

0703 ; 070302 ;

摘要：

Photoemission spectroscopy measurements have been performed on films of individual germanium nanocrystals. The Ge 3d core-level photoemission reveals mainly bulk-like coordinated atoms and structural disorder on the nanocrystal surface. The Ge 3d plasmon excitation exhibits a reduced bulk- and an increased surface-plasmon contribution underlining the importance of the surface region to the overall particle electronic structure. In the Ge nanocrystal valence-band photoemission features similar to amorphous-Ge are found, further indicating structural disorder in the surface region of the nanocrystals. (C) 2002 Elsevier Science B.V. All rights reserved.

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页码：117 / 124

页数：8

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