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Advances in Condensed Matter Physics
Volume 2017, Article ID 5787821, 5 pages
https://doi.org/10.1155/2017/5787821
Research Article

Resonance Raman Scattering in TlGaSe2 Crystals

1Department of Telecommunication, Technical University of Moldova, Chișinău, Moldova
2Laboratory of Materials for Photovoltaics and Photonics, Institute of Applied Physics, Academy of Sciences of Moldova, Chișinău, Moldova

Correspondence should be addressed to N. N. Syrbu; moc.oohay@nnubris

Received 28 February 2017; Accepted 13 June 2017; Published 20 August 2017

Academic Editor: Gary Wysin

Copyright © 2017 N. N. Syrbu et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The resonance Raman scattering for geometries and at temperature 10 K and infrared reflection spectra in and polarizations at 300 K were investigated. The number of () and () symmetry vibrational modes observed experimentally and calculated theoretically agree better in this case than when TlGa2Se4 crystals belong to symmetry group. The emission of resonance Raman scattering and excitonic levels luminescence spectra overlap. The lines in resonance Raman spectra were identified as a combination of optical phonons in Brillouin zone center.