Structural Characterization and Thermoelectric Properties of Br-Doped AgSn_m[Sb_0.8Bi_0.2]Te_2+m Systems.

ABSTRACT: Herein, we report the synthesis, structural and microstructural characterization, and thermoelectric properties of AgSn_m[Sb_0.8Bi_0.2]Te_2+m and Br-doped telluride systems. These compounds were prepared by solid-state reaction at high temperature. Powder X-ray diffraction data reveal that these samples exhibit crystal structures related to the NaCl-type lattice. The microstructures and morphologies are investigated by scanning electron microscopy, energy-dispersive X-ray spectroscopy (EDS), and high-resolution transmission electron microscopy (HRTEM). Positive values of the Seebeck coefficient (S) indicate that the transport properties are dominated by holes. The S of undoped AgSn_m[Sb_0.8Bi_0.2]Te<

SUBMITTER: Delgado D 

PROVIDER: S-EPMC10419848 | biostudies-literature | 2023 Jul

REPOSITORIES: biostudies-literature