Surface adsorption properties of GaP (bar 1bar 1bar 1) studied by XPS, UPS and HREELS
Surface adsorption properties of GaP (bar 1bar 1bar 1) studied by XPS, UPS and HREELS
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通过 XPS、UPS 和 HREELS 研究 GaP 的表面吸附特性 (bar 1bar 1bar 1)
DOI：
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发表时间：
1990
期刊：
影响因子：
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通讯作者：
Xun Wang
中科院分区：
文献类型：
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作者：
H. Xiao;Xingyu Lu;G. Dong;X. Ding;P. Chen;Xun Wang
用XPS、UPS和HREELS研究了离子轰击和热退火法制备的GaP（）表面氧和氢的吸附。通过测量不同动能的光电子，获得了化学吸附反应、表面能带弯曲和表面势垒建立等信息。仔细研究了吸附的早期饱和阶段。发现在这些早期阶段，氧原子是结合和解离吸附的。发现这种吸附与表面缺陷有关。
Adsorption of oxygen and hydrogen on the GaP () surface prepared by ion bombardment and thermal annealing has been studied by XPS, UPS and HREELS. Information about the chemisorption reaction, surface band bending, and surface barrier build-up, etc. is obtained by measuring photoelectrons at different kinetic energies. Early saturation stages of adsorption are studied carefully. It is found that in these early stages oxygen atoms are adsorbed both associatively and dissociatively. Such adsorption is found related to surface defects.