About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Alloys and Compounds for Thermoelectric and Solar Cell Applications XIV
|
| Presentation Title |
Development of Se-Doped Bi2Te3 Film by Pulsed Electrodeposition |
| Author(s) |
Cheng-Yen Yang, Albert T. Wu |
| On-Site Speaker (Planned) |
Cheng-Yen Yang |
| Abstract Scope |
Bismuth telluride (Bi2Te3) is among the most widely used thermoelectric materials near room temperature due to its excellent thermoelectric performance. In this study, Bi2Te3-xSex thick films were prepared by pulsed electrodeposition using a nitric acid electrolyte. Pulsed electrodeposition enables precise control of the film composition and thickness, and produces films with a (110) preferred orientation that benefits thermoelectric performance. Selenium (Se) was doped into the films to further improve their thermoelectric properties, and post-deposition annealing was applied to enhance crystallinity and carrier transport. To simulate practical thermoelectric cooling modules, a thermal interface material (TIM) with low thermal resistance, low electrical resistance, and high solderability was used to replace the traditional copper electrode and improve cooling efficiency. The results demonstrate that the combination of compositional tuning, microstructure optimization, and module design shows great potential for room-temperature thermoelectric cooling applications. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Characterization, Surface Modification and Coatings, Electronic Materials |