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Plasma resonance in IR spectra of reflection of solid solutions PbTe 1−x Br x (c)

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Abstract

The concentration of free electrons, Fermi level, and specific electric conductivity on the basis of the studied coefficient of IR reflection in the region of plasma resonance of solid solutions PbTe1 − x Br x is determined. It is found that the concentration of electrons grows upon an increase in bromine concentration; however, it is much less than the concentration of the introduced foreign atoms. At x > 0.03, the Fermi level is in the band gap close to the bottom of the conductivity zone at a distance of 0.77 kT, which results in degradation of the semiconductor and constancy of electron concentration and specific electrical conductivity upon a further increase in the dissolved bromine concentration.

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Authors and Affiliations

  1. Voronezh State University, Voronezh, Russia

    M. K. Sharov

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  1. M. K. Sharov
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Original Russian Text © M.K. Sharov, 2009, published in Neorganicheskie Materialy, 2009, Vol. 45, No. 8, pp. 1021–1024.

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Sharov, M.K. Plasma resonance in IR spectra of reflection of solid solutions PbTe 1−x Br x (c). Inorg Mater 45, 949–952 (2009). https://doi.org/10.1134/S002016850908024X

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  • DOI: https://doi.org/10.1134/S002016850908024X

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