Revealing the Defect-Dominated Electron Scattering in Mg₃Sb₂-Based Thermoelectric Materials.

ABSTRACT: The thermoelectric parameters are essentially governed by electron and phonon transport. Since the carrier scattering mechanism plays a decisive role in electron transport, it is of great significance for the electrical properties of thermoelectric materials. As a typical example, the defect-dominated carrier scattering mechanism can significantly impact the room-temperature electron mobility of n-type Mg₃Sb₂-based materials. However, the origin of such a defect scattering mechanism is still controversial. Herein, the existence of the Mg vacancies and Mg interstitials has been identified by synchrotron powder X-ray diffraction. The relationship among the point defects, chemical compositions, and synthesis conditions in Mg₃Sb₂-based materials has

SUBMITTER: Jia J 

PROVIDER: S-EPMC9620639 | biostudies-literature | 2022

REPOSITORIES: biostudies-literature