| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Alloys and Compounds for Thermoelectric and Solar Cell Applications XI
|
| Presentation Title |
C-1: Compositional Modification Improves the Thermoelectric Performance of AgSbTe2 |
| Author(s) |
Bo-Chia Chen, Hsin-Jay Wu |
| On-Site Speaker (Planned) |
Bo-Chia Chen |
| Abstract Scope |
In the mid-temperature range, AgSbTe2 is a potential thermoelectric compound. Their thermal and electrical properties can be efficiently optimized by even slightly altering the ratio of each element. The figure-of-merit zT is only one at 623 K due to the power factor (S2ρ) negatively impacting the high electrical resistivity (ρ). The stoichiometric ratios for the pure AgSbTe2 are tweaked in this study, resulting in a more significant Seebeck coefficient (S) and better electrical conductivity. The figure-of-merit zT rose to 1.4 with the low thermal conductivity (κ) combined. Second, following correct doping, the κ and κL are further lowered, but the power factor remains intact. Our AgSbTe2-based alloys surpass most AgSbTe2-based materials, with a peak zT of 1.7 at 623 K and an average zTave of 1.15 between 300 and 623 K. |
| Proceedings Inclusion? |
Planned: |