|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Alloys and Compounds for Thermoelectric and Solar Cell Applications VI
||High Thermoelectric Figure-of-merit in n-type Ga-incorporated PbTe
||Hsin-jay Wu, Yi-huei Du
|On-Site Speaker (Planned)
Lead-telluride and its alloys have been the most well-established mid-temperature thermoelectric materials for decades. Recent efforts have greatly concentrated upon the improvement of zTs for the n-type PbTe. Herein, the Ga-substituted GaxPb1-xTe (x=0~0.3) show n-type semiconducting with the enhanced power factor, while the reduced thermal conductivity can be further realized as the Ga-doped samples remain single-phase. As a result, incorporating the minor amount of Ga in PbTe boost the zTs larger than zT>1.4 (Ga0.06Pb0.94Te) at 673K, which is found to correlate strongly with the solubility range of single-phase PbTe. Meanwhile, the isothermal section of Pb-Te-Ga at 673K is determined experimentally by thermally-equilibrated alloys, with an emphasis upon the homogeneity range of PbTe.
||Planned: Supplemental Proceedings volume