| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Alloys and Compounds for Thermoelectric and Solar Cell Applications XI
|
| Presentation Title |
Modulating Doping Concentration via Thermodynamic Approach for High-Performance p-type Bi2Te3 Thermoelectrics |
| Author(s) |
Hung-Wei Chen, Hsin-Jay Wu |
| On-Site Speaker (Planned) |
Hung-Wei Chen |
| Abstract Scope |
Thermoelectric (TE) materials have attracted significant interest in recent decades due to their outstanding capability in waste-heat recovery and spot cooling. Among various TE materials, Bismuth telluride (Bi2Te3) based alloys are the most promising candidate for near room-temperature applications. Herein, the TE performance of p-type Bi2Te3-based materials is enhanced using two different procedures: (i) introducing dilute doping in the single-phase Bi2Te3, and (ii) incorporating the liquid-like dopants into heavily-doped Bi2Te3. Our p-type Bi2Te3 crystals perform enhanced electrical conductivity as well as boosted thermal power (S). Compared to the state-of-the-art p-type Bi2Te3, the peak zT value at 300 K for our lightly-doped p-type Bi2Te3 is 130% higher while an enhanced average zT (zTavg~ 1.2) is reported in the temperature range of 323 K to 493 K for the heavily-doped Bi2Te3. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Energy Conversion and Storage, |