Abstract
We have studied Raman spectra of single- and polycrystalline Pb1 − x Sn x Te (0 ≤ x ≤ 1) films on different substrates in relation to the intensity of the laser action. The composition of oxide phases on the surface of lead-tin telluride films has been described, and their modification as a result of photostimulated oxidation of the surface during measurements of spectra has been analyzed. We have shown that, for films with a small mole fraction of tin telluride (x ≤ 0.26), irrespective of the crystalline state, predominant oxidation of tellurium with the formation of the compound TeO2 takes place during the laser action. In films with a high content of tin, at a laser-action intensity higher than 1000 μW, tellurium dioxide TeO2 on the surface is replaced with tin dioxide SnO2.
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Original Russian Text © S.P. Zimin, E.S. Gorlachev, N.V. Gladysheva, V.V. Naumov, V.F. Gremenok, H.G. Seidi, 2013, published in Optika i Spektroskopiya, 2013, Vol. 115, No. 5, pp. 767–773.
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Zimin, S.P., Gorlachev, E.S., Gladysheva, N.V. et al. Dynamics of oxide phases on the surface of single- and polycrystalline Pb1 − x Sn x Te films upon their investigation by the raman light scattering method. Opt. Spectrosc. 115, 679–684 (2013). https://doi.org/10.1134/S0030400X1311026X
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DOI: https://doi.org/10.1134/S0030400X1311026X