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September 5, 2025Advanced Functional Materials

Realizing High Thermoelectric Performance in GeTe‐Based Alloys Without Lead Addition

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Authors

SLShixuan LiuWWWu WangLXLin Xie

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Overview

This study demonstrates improved thermoelectric performance in GeTe alloys without lead addition, suggesting new pathways for sustainable energy.

Key Points

  • An ultrahigh peak figure of merit ZT max of approximately 2.7 at 800 K was achieved without lead addition, showing promise for green energy.
  • The incorporation of Mg and the alloying of Sb2Te3/Bi2Te3 into GeTe lead to significant enhancement in phonon scattering and power factor.
  • A 2 × 2 π-type segmented thermoelectric module constructed from lead-free GeTe materials achieved a conversion efficiency of about 10.5%.
  • This solution allows balancing of electrical and thermal transport in thermoelectric devices, supporting the move toward sustainable energy technologies.

Cite This Study

Liu et al. (2025) studied this question.

synapsesocial.com/papers/68bb42272b87ece8dc958e27https://doi.org/10.1002/adfm.202510362
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