, Volume 53, Issue 6, pp 742–746 | Cite as

Thermoelectric Properties of Nanocomposite Bi0.45Sb1.55Te2.985 Solid Solution with SiO2 Microparticles

  • A. A. ShabaldinEmail author
  • P. P. Konstantinov
  • D. A. Kurdyukov
  • L. N. Lukyanova
  • A. Yu. Samunin
  • E. Yu. Stovpiaga
  • A. T. Burkov


Nanocomposite thermoelectrics based on Bi0.45Sb1.55Te2.985 solid solution of p-type conductivity are fabricated by the hot pressing of nanopowders of this solid solution with the addition of SiO2 microparticles. Investigations of the thermoelectric properties show that the thermoelectric power of the nanocomposites increases in a wide temperature range of 80–420 K, while the thermal conductivity considerably decreases at 80–320 K, which, despite a decrease in the electrical conductivity, leads to an increase in the thermoelectric efficiency in the nanostructured material without the SiO2 addition by almost 50% (at 300 K). When adding SiO2, the efficiency decreases. The initial thermoelectric fabricated without nanostructuring, in which the maximal thermoelectric figure of merit ZT = 1 at 390 K, is most efficient at temperatures above 350 K.



This study was supported by the Russian Scienсe Foundation, project no. 16-42-01067.


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Copyright information

© Pleiades Publishing, Ltd. 2019

Authors and Affiliations

  • A. A. Shabaldin
    • 1
    Email author
  • P. P. Konstantinov
    • 1
  • D. A. Kurdyukov
    • 1
  • L. N. Lukyanova
    • 1
  • A. Yu. Samunin
    • 1
  • E. Yu. Stovpiaga
    • 1
  • A. T. Burkov
    • 1
  1. 1.Ioffe InstituteSt. PetersburgRussia

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