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Effect of constant-energy surface anisotropy on the thermoelectric figure-of-merit of the n-Bi2 (Te,Se,S)3 solid solutions

  • Semiconductors and Insulators
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Abstract

A study is reported of the thermoelectric and galvanomagnetic properties of n-Bi2Te3−x−y SexSey solid solutions for 0.12⩽x⩽0.36 and 0.12⩽y⩽0.21 within the 80–300 K temperature region. The thermoelectric figure-of-merit Z has been found to correlate with the parameters of the many-valley energy-band model including anisotropic carrier scattering. It is shown that a decrease in the constant-energy surface anisotropy and scattering anisotropy results in a growth of Z for optimum carrier concentrations in the solid solution.

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Authors and Affiliations

  1. A. F. Ioffe Physicotechnical Institute, Russian Academy of Sciences, 194021, St. Petersburg, Russia

    V. A. Kutasov, L. N. Luk’yanova & P. P. Konstantinov

Authors
  1. V. A. Kutasov
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  2. L. N. Luk’yanova
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  3. P. P. Konstantinov
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Fiz. Tverd. Tela (St. Petersburg) 41, 187–192 (February 1999)

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Kutasov, V.A., Luk’yanova, L.N. & Konstantinov, P.P. Effect of constant-energy surface anisotropy on the thermoelectric figure-of-merit of the n-Bi2 (Te,Se,S)3 solid solutions. Phys. Solid State 41, 164–169 (1999). https://doi.org/10.1134/1.1130749

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