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Title: Electron exchange between tin impurity U{sup –} centers in PbS{sub z}Se{sub 1–z} alloys

Abstract

Using emission {sup 119mm}Sn({sup 119m}Sn) and {sup 119}Sb({sup 119m}Sn) Mössbauer spectroscopy, it is shown that impurity tin atoms in PbS{sub z}Se{sub 1–z} alloys substitute lead atoms and are two-electron donors with negative correlation energy (U{sup –} centers). It is found that the energy levels related to impurity tin atoms are in the lower half of the band gap at z ≥ 0.5 against the background of allowed valence-band states at z ≤ 0.4. The electron exchange between neutral and doubly ionized tin U{sup –} centers in partially compensated Pb{sub 0.99}Sn{sub 0.005}Na{sub 0.005}S{sub z}Se{sub 1–z} alloys is studied. The activation energy of this process decreases from 0.111(5) eV for a composition with z = 1 to 0.049(5) eV for compositions with c ≤ 0. For all z, the exchange is implemented via the simultaneous transfer of two electrons using delocalized valence-band states.

Authors:
 [1];  [2]; ; ;  [1]
  1. Alexander Herzen State Pedagogical University of Russia (Russian Federation)
  2. Russian Academy of Sciences, Ioffe Physical–Technical Institute (Russian Federation)
Publication Date:
OSTI Identifier:
22649748
Resource Type:
Journal Article
Resource Relation:
Journal Name: Semiconductors; Journal Volume: 50; Journal Issue: 7; Other Information: Copyright (c) 2016 Pleiades Publishing, Ltd.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 36 MATERIALS SCIENCE; ACTIVATION ENERGY; ANTIMONY 119; BINDING ENERGY; CONCENTRATION RATIO; ELECTRON CORRELATION; ELECTRON EXCHANGE; ELECTRONS; ENERGY GAP; ENERGY LEVELS; LEAD SELENIDES; LEAD SULFIDES; MOESSBAUER EFFECT; TIN; TIN 119; U CENTERS; VALENCE

Citation Formats

Marchenko, A. V., Terukov, E. I., Seregin, P. P., E-mail: ppseregin@mail.ru, Rasnjuk, A. N., and Kiselev, V. S. Electron exchange between tin impurity U{sup –} centers in PbS{sub z}Se{sub 1–z} alloys. United States: N. p., 2016. Web. doi:10.1134/S1063782616070149.
Marchenko, A. V., Terukov, E. I., Seregin, P. P., E-mail: ppseregin@mail.ru, Rasnjuk, A. N., & Kiselev, V. S. Electron exchange between tin impurity U{sup –} centers in PbS{sub z}Se{sub 1–z} alloys. United States. doi:10.1134/S1063782616070149.
Marchenko, A. V., Terukov, E. I., Seregin, P. P., E-mail: ppseregin@mail.ru, Rasnjuk, A. N., and Kiselev, V. S. Fri . "Electron exchange between tin impurity U{sup –} centers in PbS{sub z}Se{sub 1–z} alloys". United States. doi:10.1134/S1063782616070149.
@article{osti_22649748,
title = {Electron exchange between tin impurity U{sup –} centers in PbS{sub z}Se{sub 1–z} alloys},
author = {Marchenko, A. V. and Terukov, E. I. and Seregin, P. P., E-mail: ppseregin@mail.ru and Rasnjuk, A. N. and Kiselev, V. S.},
abstractNote = {Using emission {sup 119mm}Sn({sup 119m}Sn) and {sup 119}Sb({sup 119m}Sn) Mössbauer spectroscopy, it is shown that impurity tin atoms in PbS{sub z}Se{sub 1–z} alloys substitute lead atoms and are two-electron donors with negative correlation energy (U{sup –} centers). It is found that the energy levels related to impurity tin atoms are in the lower half of the band gap at z ≥ 0.5 against the background of allowed valence-band states at z ≤ 0.4. The electron exchange between neutral and doubly ionized tin U{sup –} centers in partially compensated Pb{sub 0.99}Sn{sub 0.005}Na{sub 0.005}S{sub z}Se{sub 1–z} alloys is studied. The activation energy of this process decreases from 0.111(5) eV for a composition with z = 1 to 0.049(5) eV for compositions with c ≤ 0. For all z, the exchange is implemented via the simultaneous transfer of two electrons using delocalized valence-band states.},
doi = {10.1134/S1063782616070149},
journal = {Semiconductors},
number = 7,
volume = 50,
place = {United States},
year = {Fri Jul 15 00:00:00 EDT 2016},
month = {Fri Jul 15 00:00:00 EDT 2016}
}