| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Alloys and Compounds for Thermoelectric and Solar Cell Applications XI
|
| Presentation Title |
C-2: Eliciting Promising p-type Bi2Te3 with Sizeable Thermoelectric Performances |
| Author(s) |
Hung-Wei Chen, Hsin-Jay Wu |
| On-Site Speaker (Planned) |
Hung-Wei Chen |
| Abstract Scope |
Due to the urgent demands for small device cooling and heat recovery applications, Thermoelectric (TE) materials have drawn significant interest in recent decades. Among various TE materials, Bismuth telluride (Bi2Te3) based alloys are the most potential candidate for near room-temperature applications, which have also been commercialized recently. In this study, we seek to enhance the TE performance of p-type Bi2Te3 materials by (i) modulating doping concentration in single-phase Bi2Te3 and (ii) inducing the liquid-like dopants into highly doped Bi2Te3. Our result demonstrates that a remarkable zT value can be presented in lightly-doped Bi2Te3 while a notable average zT (zTavg) can be observed in heavily-doped Bi2Te3. Hence, the zT value is improved by 30% (zT~ 1.6) compared to the previous p-type Bi2Te3, and an enhanced average zT (zTavg~ 1.2) is reported in the temperature range of 323 K to 493 K, representing the immense potential for future TE devices. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Energy Conversion and Storage, |