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Effect of Sulfur Vacancies on the Thermoelectric Properties of Galena

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Bulletin of the Russian Academy of Sciences: Physics Aims and scope

Abstract

Dependences of Seebeck coefficient S, resistivity ρ, and thermal conductivity κ of narrow-gap PbS1 –y (0 ≤ y ≤ 10−3) semiconductor crystals are studied at a temperature of Т = 305 K. It is found via EPR and the Hall approach that the number of sulfur vacancies and vacancy clusters grows along with nonstoichiometry parameter y of PbS1 − y samples. Analysis of dependences S(y), ρ(y), and κ(y) shows that the sulfur vacancies and vacancy clusters form resonance levels in the conduction band of the PbS1 − y crystals that affect their thermoelectric figure of merit.

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Authors and Affiliations

  1. Kazan State Power Engineering University, 420034, Kazan, Russia

    V. A. Golenishchev-Kutuzov, A. M. Sinicin, R. R. Zainullin & V. A. Ulanov

Authors
  1. V. A. Golenishchev-Kutuzov
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  2. A. M. Sinicin
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  3. R. R. Zainullin
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  4. V. A. Ulanov
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Corresponding author

Correspondence to V. A. Ulanov.

Additional information

Translated by L. Mosina

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Golenishchev-Kutuzov, V.A., Sinicin, A.M., Zainullin, R.R. et al. Effect of Sulfur Vacancies on the Thermoelectric Properties of Galena. Bull. Russ. Acad. Sci. Phys. 83, 665–667 (2019). https://doi.org/10.3103/S1062873819060170

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  • DOI: https://doi.org/10.3103/S1062873819060170

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