CaSO4晶体中产生本征电子空穴捕获中心的机制

Q4 Physics and Astronomy

Eurasian Journal of Physics and Functional Materials Pub Date : 2021-09-22 DOI:10.32523/ejpfm.2021050308

T. Nurakhmetov, K. Zhangylyssov, A. Zhunusbekov, D. Daurenbekov, T. Alibay, B. Sadykova, B. Yussupbekova, D. Tolekov

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引用次数: 1

摘要

用真空紫外光谱法和热活化光谱法研究了CaSO4在15～300K温度下产生电子空穴捕获中心的机理。结果表明，阴离子配合物SO4−中的电子被捕获，空穴以SO4−自由基的形式定位，形成了电子-空穴捕获中心。基于在3.0-3.1eV和2.7eV处的长波长复合发射的激发光谱的测量，估计了所形成的电子-空穴捕获中心的能量距离（4.43eV和3.87eV）。

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Mechanisms for the creation of intrinsic electron-hole trapping centers in a CaSO4 crystall

The mechanism of creation of electron-hole trapping centers in CaSO4 at 15-300 K was investigated by the methods of vacuum-ultraviolet and thermoactivation spectroscopy. It is shown that electron-hole trapping centers are formed upon trap of electrons in the anionic complexes SO4− and localization of holes in the form of SO4− radical. Based on the measurement of the spectrum of excitation of long-wavelength recombination emission at 3.0-3.1 eV and 2.7 eV, the energy distance of the formed electron-hole trapping centers was estimated (4.43 eV and 3.87 eV).

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来源期刊

Eurasian Journal of Physics and Functional Materials Materials Science-Materials Science (miscellaneous)

CiteScore

1.10

自引率

0.00%

发文量

审稿时长

5 weeks