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Title: Electron exchange between neutral and ionized impurity iron centers in vitreous arsenic selenide

Abstract

Impurity iron atoms in vitreous arsenic-selenide As{sub 2}Se{sub 3} films modified by iron form one-electron donor centers with an ionization energy of 0.24 (3) eV (the energy is counted from the conduction-band bottom). The Fermi level is shifted with an increase in the iron concentration from the mid-gap to the donorlevel position of iron due to the filling of one-electron states of the acceptor type lying below the Fermi level. At an iron concentration of ≥3 at %, the electron-exchange process is observed between neutral and ionized iron centers resulting in a change both in the electron density and in the tensor of the electric-field gradient at iron-atom nuclei with increasing temperature above 350 K.

Authors:
 [1];  [2];  [3]; ;  [1]
  1. Herzen State Pedagogical University of Russia (Russian Federation)
  2. Russian Academy of Sciences, Ioffe Physical–Technical Institute (Russian Federation)
  3. St.-Petersburg Mining University (Russian Federation)
Publication Date:
OSTI Identifier:
22649594
Resource Type:
Journal Article
Resource Relation:
Journal Name: Semiconductors; Journal Volume: 51; Journal Issue: 4; Other Information: Copyright (c) 2017 Pleiades Publishing, Ltd.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ARSENIC SELENIDES; ATOMS; BINDING ENERGY; CONCENTRATION RATIO; ELECTRIC FIELDS; ELECTRON DENSITY; ELECTRON EXCHANGE; ELECTRONIC STRUCTURE; ELECTRONS; FERMI LEVEL; IONIZATION; IRON; THIN FILMS; VALENCE

Citation Formats

Marchenko, A. V., Terukov, E. I., Egorova, A. Yu., Kiselev, V. S., and Seregin, P. P., E-mail: ppseregin@mail.ru. Electron exchange between neutral and ionized impurity iron centers in vitreous arsenic selenide. United States: N. p., 2017. Web. doi:10.1134/S1063782617040133.
Marchenko, A. V., Terukov, E. I., Egorova, A. Yu., Kiselev, V. S., & Seregin, P. P., E-mail: ppseregin@mail.ru. Electron exchange between neutral and ionized impurity iron centers in vitreous arsenic selenide. United States. doi:10.1134/S1063782617040133.
Marchenko, A. V., Terukov, E. I., Egorova, A. Yu., Kiselev, V. S., and Seregin, P. P., E-mail: ppseregin@mail.ru. Sat . "Electron exchange between neutral and ionized impurity iron centers in vitreous arsenic selenide". United States. doi:10.1134/S1063782617040133.
@article{osti_22649594,
title = {Electron exchange between neutral and ionized impurity iron centers in vitreous arsenic selenide},
author = {Marchenko, A. V. and Terukov, E. I. and Egorova, A. Yu. and Kiselev, V. S. and Seregin, P. P., E-mail: ppseregin@mail.ru},
abstractNote = {Impurity iron atoms in vitreous arsenic-selenide As{sub 2}Se{sub 3} films modified by iron form one-electron donor centers with an ionization energy of 0.24 (3) eV (the energy is counted from the conduction-band bottom). The Fermi level is shifted with an increase in the iron concentration from the mid-gap to the donorlevel position of iron due to the filling of one-electron states of the acceptor type lying below the Fermi level. At an iron concentration of ≥3 at %, the electron-exchange process is observed between neutral and ionized iron centers resulting in a change both in the electron density and in the tensor of the electric-field gradient at iron-atom nuclei with increasing temperature above 350 K.},
doi = {10.1134/S1063782617040133},
journal = {Semiconductors},
number = 4,
volume = 51,
place = {United States},
year = {Sat Apr 15 00:00:00 EDT 2017},
month = {Sat Apr 15 00:00:00 EDT 2017}
}