|About this Abstract
||2021 TMS Annual Meeting & Exhibition
||Alloys and Compounds for Thermoelectric and Solar Cell Applications IX
||Enhanced Thermoelectric Figure-of-Merit in Nanostructured n-type Bi2Te3 via Phase Diagram Engineering
||Hsin-Ching Huang, Wan-Ting Yen, Hsin-Jay Wu
|On-Site Speaker (Planned)
Bismuth tellurides have been one of the most well-established thermoelectric (TE) coolers since the 1960s. Nevertheless, the research interest for this layered-structure material has not been faded away, given that there are still breakthroughs in its conversion efficiency being reported. Herein, an emerging thermodynamic approach by using an equilibrium phase diagram is being adopted to probe the high-zT zone for the n-type Ag-Bi2Te3. In particular, the best-performing Ag-Bi2Te3 reveals an Ag-rich inclusion along the grain boundaries, which further embedding with the dense nano-precipitation inside the grain. Nanostructured Ag-Bi2Te3 bulks, therefore, result in extraordinary power factor and reduced lattice thermal conductivity.
||Nanotechnology, Sustainability, Energy Conversion and Storage