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Optical properties of PbS thin films

  • Surfaces, Interfaces, and Thin Films
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Abstract

The complex dielectric function of PbS thin films is studied by spectroscopic ellipsometry in the spectral range from 0.74 to 6.45 eV at a temperature of 293 K. The critical energies are determined to be E 1 = 3.53 eV and E 2 = 4.57 eV. For both energy regions, the best fit is attained at the critical point 2D (m = 0). In addition, the Raman spectra and the optical-absorption spectra of PbS thin films are studied. From the dependence of the quantity (αhν)2 on the photon energy hν, the band gap is established at E g = 0.37 eV.

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Authors and Affiliations

  1. National Academy of Azerbaijan, Nakhichevan Branch, Nakhichevan, AZ-7000, Azerbaijan

    O. R. Akhmedov & M. G. Guseinaliyev

  2. Abdullaev Institute of Physics, National Academy of Sciences of Azerbaijan, Baku, AZ-1143, Azerbaijan

    N. A. Abdullaev, N. M. Abdullaev, S. S. Babaev & N. A. Kasumov

Authors
  1. O. R. Akhmedov
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  2. M. G. Guseinaliyev
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  3. N. A. Abdullaev
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  4. N. M. Abdullaev
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  5. S. S. Babaev
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  6. N. A. Kasumov
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Correspondence to O. R. Akhmedov.

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Original Russian Text © O.R. Akhmedov, M.G. Guseinaliyev, N.A. Abdullaev, N.M. Abdullaev, S.S. Babaev, N.A. Kasumov, 2016, published in Fizika i Tekhnika Poluprovodnikov, 2016, Vol. 50, No. 1, pp. 51–54.

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Akhmedov, O.R., Guseinaliyev, M.G., Abdullaev, N.A. et al. Optical properties of PbS thin films. Semiconductors 50, 50–53 (2016). https://doi.org/10.1134/S1063782616010036

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  • DOI: https://doi.org/10.1134/S1063782616010036

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