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Influence of Grain Structure Features on the Thermoelectric Properties of Compounds Based on Bismuth Telluride

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An analysis of the specific mechanisms of the influence of the state of the grain structure on the thermoelectric properties (electrical resistivity and total thermal conductivity) of the compound Bi1.9Gd0.1Te3 is presented. The following mechanisms are considered: 1) formation of Te surface vacancies at grain boundaries, which act as donor centers; 2) change in the elemental composition of grains on high-temperature evaporation of Te on heat treatment of the material aimed at obtaining samples with a controlled average grain size.

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The work was supported by the Ministry of Education and Science of the Russian Federation, project No. 0625-2020-0015.

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Authors and Affiliations

  1. Shukhov Belgorod State Technological University, Belgorod, Russia

    O. N. Ivanov, A. E. Vasil’ev & E. P. Dan’shina

  2. Belgorod State National Research University, Belgorod, Russia

    M. N. Yapryntsev

Authors
  1. O. N. Ivanov
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  2. M. N. Yapryntsev
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  3. A. E. Vasil’ev
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  4. E. P. Dan’shina
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Correspondence to O. N. Ivanov.

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Translated from Steklo i Keramika, No. 1, pp. 3 – 11, January, 2022.

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Ivanov, O.N., Yapryntsev, M.N., Vasil’ev, A.E. et al. Influence of Grain Structure Features on the Thermoelectric Properties of Compounds Based on Bismuth Telluride. Glass Ceram 79, 3–8 (2022). https://doi.org/10.1007/s10717-022-00443-y

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  • DOI: https://doi.org/10.1007/s10717-022-00443-y

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