{"title":"Electron exchange between impurity centers of tin in PbS and PbSe","authors":"S. Zaynabiddinov, K. Bobokhujaev","doi":"10.56017/2181-1318.1015","DOIUrl":null,"url":null,"abstract":"Electron exchange between neutral and doubly ionized U -minus centers of tin in par-tially compensated solid solutions Pb1−xSnxS and Pb1−xSnxSe has been investigated using 119mmSn(119mSn) emission Mössbauer spectroscopy. The activation energy of the process for Pb1−xSnxS 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 Pb1−xSnxSe 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.","PeriodicalId":127023,"journal":{"name":"Bulletin of National University of Uzbekistan: Mathematics and Natural Sciences","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2018-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Bulletin of National University of Uzbekistan: Mathematics and Natural Sciences","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.56017/2181-1318.1015","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
Electron exchange between neutral and doubly ionized U -minus centers of tin in par-tially compensated solid solutions Pb1−xSnxS and Pb1−xSnxSe has been investigated using 119mmSn(119mSn) emission Mössbauer spectroscopy. The activation energy of the process for Pb1−xSnxS 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 Pb1−xSnxSe 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.
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