|About this Abstract
||2021 TMS Annual Meeting & Exhibition
||Alloys and Compounds for Thermoelectric and Solar Cell Applications IX
||Effect of Zn and Cr Co-doping on the Thermoelectric Properties of Colusite Cu26V2M6S32 (M=Ge,Sn)
||Paulina Kaminska, Cédric Bourgès, Piotr Śpiewak, Takao Mori
|On-Site Speaker (Planned)
Colusite-based materials have attracted significant attention in the field of thermoelectric materials because of their earth-abundant elements and high thermoelectric performance. In this work, we present the enhancement of thermoelectric properties in colusite Cu26V2M6S32 (M=Ge,Sn) by Zn and Cr co-doping effect. The process of synthesis a pure, single phase colusites has been optimized and confirmed by X-ray diffraction. Measurements of the electrical, thermal and magnetic properties of examined compounds have been conducted in order to investigate its thermoelectric properties. Zn doping is responsible for stabilizing the structure and providing electron doping, while Cr affects the magnetic properties of material. We obtained a great improvement of the power factor value for doped colusites, compared to undoped one. For better understanding of the electronic properties, the density functional theory (DFT) calculations were employed.