|About this Abstract
||2020 TMS Annual Meeting & Exhibition
||Alloys and Compounds for Thermoelectric and Solar Cell Applications VIII
||D-6: Phase Diagram of Bi-Cu-Te and Thermoelectric Properties of Cu Doped Bi2Te3 Alloys
||Wan-Ting Yen, Hsin-Jay Wu
|On-Site Speaker (Planned)
Thermoelectric material (TE) could convert waste heat directly into electricity, and therefore it could pave the way toward the environmental sustainability. The layered-structure Bi2Te3, which crystallize in a rhombohedral symmetry, show anisotropic transport properties, and are the most well-established room-temperature TE materials. Herein we aim to tune the thermal/electrical transport properties of the Bi2Te3-based alloys, by incorporating minor amount of Cu, to form a series of Cu-doped Bi2Te3 alloys. The homogeneity regime, phase stability and microstructural evolution are elaborated by establishing the 523K isothermal section of ternary Bi-Te-Cu, using the thermally-equilibrated or solidified alloys. In addition, the TE properties of selective Cu-doped Bi2Te3 alloys that grown by the Bridgman method suggest that the small deviations in the starting compositions could lead to the huge the difference in the resultant TE performance.
||Planned: Supplemental Proceedings volume