Electron exchange between impurity centers of tin in PbS and PbSe

Authors

S. Zaynabiddinov, National University of UzbekistanFollow
K. Bobokhujaev, National University of UzbekistanFollow

Abstract

Electron exchange between neutral and doubly ionized U-minus centers of tin in par-tially compensated solid solutions Pb_1-xSn_xS and Pb_1-xSn_xSe has been investigated using ^119mmSn(^119mSn) emission Mössbauer spectroscopy. The activation energy of the process for Pb_1-xSn_xS solid solutions is 0.11 ± 0.02 eV and is comparable to the depth of energy levels of tin in the PbS band gap, while the activation energy of this process for Pb_1-xSn_xSe solid solutions is comparable to the activation energy of donor U-minus centers of tin in PbSe being 0.05 ± 0.01 eV. The exchange has been performed by the simultaneous transfer of two electrons with the use of the valence band states.

First Page

73

Last Page

77

References

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Recommended Citation

Zaynabiddinov, S. and Bobokhujaev, K. (2018) "Electron exchange between impurity centers of tin in PbS and PbSe," Bulletin of National University of Uzbekistan: Mathematics and Natural Sciences: Vol. 1: Iss. 2, Article 5.
DOI: https://doi.org/10.56017/2181-1318.1015