Optical properties of PbS thin films
- Authors: Akhmedov O.R.1, Guseinaliyev M.G.1, Abdullaev N.A.2, Abdullaev N.M.2, Babaev S.S.2, Kasumov N.A.2
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Affiliations:
- National Academy of Azerbaijan, Nakhichevan Branch
- Abdullaev Institute of Physics
- Issue: Vol 50, No 1 (2016)
- Pages: 50-53
- Section: Surfaces, Interfaces, and Thin Films
- URL: https://journals.rcsi.science/1063-7826/article/view/196682
- DOI: https://doi.org/10.1134/S1063782616010036
- ID: 196682
Cite item
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 E1 = 3.53 eV and E2 = 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 Eg = 0.37 eV.
About the authors
O. R. Akhmedov
National Academy of Azerbaijan, Nakhichevan Branch
Author for correspondence.
Email: orucahmedov@mail.ru
Azerbaijan, Nakhichevan, AZ-7000
M. G. Guseinaliyev
National Academy of Azerbaijan, Nakhichevan Branch
Email: orucahmedov@mail.ru
Azerbaijan, Nakhichevan, AZ-7000
N. A. Abdullaev
Abdullaev Institute of Physics
Email: orucahmedov@mail.ru
Azerbaijan, Baku, AZ-1143
N. M. Abdullaev
Abdullaev Institute of Physics
Email: orucahmedov@mail.ru
Azerbaijan, Baku, AZ-1143
S. S. Babaev
Abdullaev Institute of Physics
Email: orucahmedov@mail.ru
Azerbaijan, Baku, AZ-1143
N. A. Kasumov
Abdullaev Institute of Physics
Email: orucahmedov@mail.ru
Azerbaijan, Baku, AZ-1143