Ultrahigh thermoelectricity obtained in classical BiSbTe alloy processed under super-gravity.

ABSTRACT: Thermoelectric materials allow direct conversion between heat and electricity and may be useful for power generation or solid-state refrigeration. However, improving thermoelectric performance is challenging because of the strong coupling between the electrical and thermal transport properties. We demonstrate a new super-gravity-field re-melting fabrication technology that synergistically optimizes the thermoelectric performance. Using a super-gravity field, the brittle (Bi,Sb)₂Te₃ alloy undergoes unusual plastic deformation and forms mounts of microstructure defects, which is rarely observed in common fabrication process. As a result, the microstructure reconstruction and carrier concentration optimization were simultaneously realized, resulting in an ultra-low latti

SUBMITTER: Zhou M 

PROVIDER: S-EPMC12357899 | biostudies-literature | 2025 Aug

REPOSITORIES: biostudies-literature