About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Alloys and Compounds for Thermoelectric and Solar Cell Applications XIV
|
| Presentation Title |
B-14: Toward Eco-Friendly Thermoelectrics: Sn-Doped β-Zn<sub>4</sub>Sb<sub>3</sub> with Controlled Growth and Phase Stability |
| Author(s) |
Chou-Shun Lu, Hsin-Jay Wu |
| On-Site Speaker (Planned) |
Chou-Shun Lu |
| Abstract Scope |
With growing concerns about climate change and AI-driven energy demands, thermoelectric (TE) materials offer a promising solution by converting waste heat into electricity. Current TE materials like Bi<sub>2</sub>Te<sub>3</sub> and PbTe rely on rare, toxic elements, underscoring the need for safer, more abundant alternatives. β-Zn<sub>4</sub>Sb<sub>3</sub> is an environmentally friendly thermoelectric material. Its intrinsically high zT originates from the extraordinarily low thermal conductivity, which results from a complex crystal structure and diverse Zn defect sites. In this study, we optimize thermoelectric transport properties through the synergy between Sn doping and the Bridgman crystal growth technique. Meanwhile, the solid solubility of Sn in Zn<sub>4</sub>Sb<sub>3</sub> and the Zn<sub>4</sub>Sb<sub>3</sub>–ZnSnSb<sub>2</sub> two-phase region were identified via a 623 K Sn–Zn–Sb phase diagram. These findings provide valuable insights for the compositional design and crystal growth optimization of Zn<sub>4</sub>Sb<sub>3</sub>-based thermoelectric materials. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Energy Conversion and Storage, Sustainability, Other |