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Specific Features of Photoluminescence and Nanosecond Relaxation of Photocurrent in CuIn5S8 Crystals upon Strong Optical Excitation

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Abstract

Intense luminescence and nanosecond relaxation of photocurrent upon strong optical excitation have been observed in CuIn5S8 crystals grown by slow melt cooling at a constant temperature gradient. Three emission bands with energies of 1.52, 1.48, and 1.465 eV are distinguished in the photoluminescence spectra. The crystal photoactivation in the range of 300–600 K is explained by an increase in the hole mobility in the valence band with an increase in temperature.

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Funding

This study was supported by the Foundation for Science Development under the President of the Azerbaijan Republic (grant no. EİF/MQM/Elm-Tehsil-1-2016-1(26)-71/01/1).

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Authors and Affiliations

  1. Baku State Univeristy, AZ1148, Baku, Azerbaijan

    A. G. Guseinov, V. M. Salmanov, R. M. Mamedov & A. Z. Magomedov

  2. Azerbaijan University of Architecture and Construction, AZ1100, Baku, Azerbaijan

    A. I. Bairamova

Authors
  1. A. G. Guseinov
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  2. V. M. Salmanov
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  3. R. M. Mamedov
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  4. A. Z. Magomedov
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  5. A. I. Bairamova
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Correspondence to A. G. Guseinov.

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Translated by A. Sin’kov

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Guseinov, A.G., Salmanov, V.M., Mamedov, R.M. et al. Specific Features of Photoluminescence and Nanosecond Relaxation of Photocurrent in CuIn5S8 Crystals upon Strong Optical Excitation. Opt. Spectrosc. 128, 1978–1982 (2020). https://doi.org/10.1134/S0030400X20120905

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  • DOI: https://doi.org/10.1134/S0030400X20120905

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