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June 13, 2026ACS Applied Materials & Interfaces

Achieving a High Average Thermoelectric Figure of Merit ( ZT) in Medium-Entropy SnTe Alloys

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Authors

WZWenqi ZhengDFDan FengMZMF Zhang

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Overview

Randomized trial demonstrates improved thermoelectric figure of merit in SnTe alloys, suggesting better performance than traditional materials.

Key Points

  • This study aims to enhance the thermoelectric performance of SnTe-based alloys by increasing configurational entropy.
  • Developed Sn 1– x Ge x Te solid solution with medium-entropy range (1.0 R < ΔS < 1.5 R) through Sb 2 Te 3 alloying and Pb doping.
  • Evaluated the effects on charge carrier mass and thermal conductivity to optimize electrical and thermal transport properties.
  • Achieved a maximal ZT value of 1.31 at 723 K.
  • Obtained an average ZT value of 0.89 across 323–773 K for the sample (Sn 0.5 Ge 0.425 Pb 0.075 Te) 10 Sb 2 Te 3.
  • Demonstrated effective decoupling of electrical and thermal transports by increasing configurational entropy.

Cite This Study

Zheng et al. (2026) studied this question.

synapsesocial.com/papers/6a2cf393faef96ed7f056048https://doi.org/10.1021/acsami.6c07948
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