PHOTOEMISSION AND ELECTRON-MICROSCOPY OF SMALL SUPPORTED PALLADIUM CLUSTERS

被引:83
作者
KUHRT, C
HARSDORFF, M
机构
[1] Institut für Angewandte Physik, Universität Hamburg, W-2000 Hamburg 36
关键词
D O I
10.1016/0039-6028(91)90476-9
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
Small palladium clusters, produced by vapour deposition onto amorphous carbon substrates, were analysed in situ by photoelectron spectroscopy (XPS, UPS) and characterized ex situ by transmission electron microscopy. These combined measurements provide the actual cluster size dependence of the two well-known effects in the photoelectron spectra of small supported clusters - the valence band narrowing and the core-electron binding energy shift - suggesting the following explanations: the valence band narrowing is due to an initial state effect, while the core-level shift is dominated by the effect of the changed final state, as it is predicted by Wertheim et al.
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页码:173 / 179
页数:7
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