Specific Features of Photoconductivity of Tl1-xIn1-xSnxSe2 Monocrystals at Low Temperatures

Authors

  • O.V. Novosad Lesya Ukrainka Eastern European National University
  • G.L. Myronchuk Lesya Ukrainka Eastern European National University
  • S.P. Danylchuk Lesya Ukrainka Eastern European National University
  • O.V. Zamurueva Lesya Ukrainka Eastern European National University
  • L.V. Piskach Lesya Ukrainka Eastern European National University
  • I.V. Kityk Czestochowa University of Technology; Lesya Ukrainka Eastern European National University
  • M.V. Piasecki J. Dlugosz University; Lesya Ukrainka Eastern European National University
  • O.V. Tsisar Lesya Ukrainka Eastern European National University

DOI:

https://doi.org/10.15330/pcss.20.1.55

Keywords:

single crystals, defects, photoconductivity, thermally stimulated conductivity

Abstract

The photoconductivity spectra in the temperature range T≈36-200 K and the spectra of thermostimulated currents in the temperature range T≈70-300 K of Tl1-xIn1-xSnxSe2 single crystals obtained by directional crystallization of Bridgman-Stockbarger have been studied. The induced photoconductivity and long-term photoconductivity relaxation processes have been found. To interpret the found results, a model of two-center recombination has been suggested. It is illustrated that the role of the r-centers of slow recombination are formed by Tl vacancies. On the basis of the studies of the spectra of thermally stimulated currents, the thermal energy of electrons activation with t-levels of adhesion has been determined.

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Published

2019-04-01

How to Cite

Novosad, O., Myronchuk, G., Danylchuk, S., Zamurueva, O., Piskach, L., Kityk, I., … Tsisar, O. (2019). Specific Features of Photoconductivity of Tl1-xIn1-xSnxSe2 Monocrystals at Low Temperatures. Physics and Chemistry of Solid State, 20(1), 50–55. https://doi.org/10.15330/pcss.20.1.55

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Section

Review