Site-selective x-ray absorption fine structure analysis of an optically active center in Er-doped semiconductor thin film using x-ray-excited optical luminescence
Site-selective x-ray absorption fine structure analysis of an optically active center in Er-doped semiconductor thin film using x-ray-excited optical luminescence
复制标题
利用 X 射线激发光学发光对掺铒半导体薄膜中的光学活性中心进行位点选择性 X 射线吸收精细结构分析
DOI:
10.1063/1.1336546
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发表时间:
2001
影响因子:
4
通讯作者:
Y. Aoyagi
中科院分区:
文献类型:
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作者:
M. Ishii;Yoshihito Tanaka;T. Ishikawa;S. Komuro;T. Morikawa;Y. Aoyagi
In order to discuss the local structure of an optically active center in Er-doped Si thin film, site-selective x-ray absorption fine structure (XAFS) analysis using x-ray-excited optical luminescence was performed. The XAFS spectrum at the Er LIII edge was obtained from the x-ray photon energy dependence of the peak intensity of infrared luminescence due to Er intra-4f transition. Although conventional XAFS measurement analyzes the average structure of all of the Er, this method intrinsically provides structural information for only optically active Er. A broad 2p–5d resonant peak in the site-selective XAFS spectrum is reproduced by a density-of-state calculation of a distorted ErO6 cluster, assuming an Er transformation from an octahedral center of 0.25 A.
DOI:
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影响因子:
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