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Ag2Se as a tougher alternative to n-type Bi2Te3 thermoelectrics

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  • Min Liu

    (Tongji Univ.)

  • Xinyue Zhang

    (Tongji Univ.)

  • Shuxian Zhang

    (Tongji Univ.)

  • Yanzhong Pei

    (Tongji Univ.)

Abstract

For half a century, only Bi2Te3-based thermoelectrics have been commercialized for near room temperature applications including both power generation and refrigeration. Because of the strong layered structure, Bi2Te3 in particular for n-type conduction has to be texturized to utilize its high in-plane thermoelectric performance, leaving a substantial challenge in toughness. This work presents the fabrication and performance evaluation of thermoelectric modules based on n-type Ag2Se paring with commercial p-Bi2Te3. Ag2Se mechanically allows an order of magnitude larger fracture strain and thermoelectrically secures the module efficiency quite competitive to that of commercial one for both refrigeration and power generation within ± 50 K of room temperature, enabling a demonstration of a significantly tougher alternative to n-type Bi2Te3 for practical applications.

Suggested Citation

  • Min Liu & Xinyue Zhang & Shuxian Zhang & Yanzhong Pei, 2024. "Ag2Se as a tougher alternative to n-type Bi2Te3 thermoelectrics," Nature Communications, Nature, vol. 15(1), pages 1-6, December.
    • Handle: RePEc:nat:natcom:v:15:y:2024:i:1:d:10.1038_s41467-024-50898-6
    DOI: 10.1038/s41467-024-50898-6
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    References listed on IDEAS

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