Enhancing the Thermoelectric Performance of n-Type PbTe via Mn Doping.

ABSTRACT: Significant strides have been made in enhancing the thermoelectric properties of p-type PbTe alloys, whereas the thermoelectric performance of n-type alloys lags behind that of p-type alloys, primarily owing to the difficulty of improving their Seebeck coefficient via band convergence. In this work, Mn was introduced into the n-type Pb_0.985Sb_0.015Te alloy, and Mn doping increases the absolute value of the Seebeck coefficient significantly by increasing the effective mass and reducing carrier concentration, resulting in a higher power factor of 20.8 μW/K²cm being achieved for 0.5% Mn-doped sample at 573 K. Additionally, the decrease in electronic thermal conductivity, combined with the reduction in lattice thermal conductivity caused by the strengthened poin

SUBMITTER: Chen T 

PROVIDER: S-EPMC11901316 | biostudies-literature | 2025 Feb

REPOSITORIES: biostudies-literature