High Conversion Efficiency in Intrinsic High Power-Density Mg₂Sn-GeTe Thermoelectric Generator.

ABSTRACT: Thermoelectric generators (TEGs) offer a sustainable solution for thermal energy harvesting, where maximizing energy output necessitates achieving both high power density and high conversion efficiency. However, TEGs with intrinsically high power density by employing high power factor materials often face efficiency limitations due to their usually high thermal conductivity. Here, intrinsically high power density TEGs based on Mg₂Sn-GeTe for the first time is presented, simultaneously delivering a remarkable conversion efficiency of 9% under a temperature gradient of 418 K, thereby setting a new benchmark in the field. This exceptional performance is attributed to the significant balance between the moderating carrier and phonon transport in Mg₂Sn, enabled by a stepwi

SUBMITTER: Wu X 

PROVIDER: S-EPMC12561404 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature