Photoemission on gold-55-clusters derived from gold-phosphine AuP(C6H5)3Cl
Photoemission on gold-55-clusters derived from gold-phosphine AuP(C6H5)3Cl
复制标题
来自金膦 AuP(C6H5)3Cl 的金 55 团簇的光电子发射
DOI：
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发表时间：
1991
期刊：
影响因子：
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通讯作者：
G. Schmid
中科院分区：
文献类型：
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作者：
M. Quinten;I. Sander;P. Steiner;U. Kreibig;K. Fauth;G. Schmid
我们测量了嵌入在电隔离的膦基质中的55个原子的金原子团的XPS和UPS光谱，以及金-磷化氢原子团簇的化学派生。与体金的光谱相比，团簇的价带光谱和核能级光谱显示出峰和费米能级向更高的结合能方向移动，峰的移动可以定性地用终态效应来解释。我们成功地分离体和表面对核心能级光谱的贡献，并对团簇的价带光谱进行了合理的定量分析。金-膦的Au-4f核心能级谱显示出两个峰，其结合能比相应的团簇峰高1.5 eV。
We measured XPS and UPS spectra of gold clusters with 55 atoms, embedded in an electrically isolating phosphine matrix, and of gold-phosphine, from which the clusters were chemically derived. Compared to the spectra of bulk gold the valence band spectrum and the core level spectra of the clusters showed shifts of the peaks and the fermi level to higher binding energies.The shift of the peaks could qualitatively be interpreted by a final state effect. We succeeded in a separation of bulk and surface contributions to the core level spectra and in a reasonable quantitative analysis of the valence band spectrum of the clusters.The Au 4f core level spectrum of gold-phosphine showed two peaks at 1.5 eV higher binding energies than the corresponding peaks of the clusters.