Thermoelectric properties of P-type Sb2Te3 thick film processed by a screen-printing technique and a subsequent annealing process
| Autor: | Jin Sang Kim, Byung Jin Cho, Sun Jin Kim, Gyung Soo Kim, Ju Hyung We |
|---|---|
| Rok vydání: | 2014 |
| Předmět: |
Electron mobility
Fabrication Materials science business.industry Annealing (metallurgy) Mechanical Engineering Metals and Alloys chemistry.chemical_element chemistry.chemical_compound Surface coating chemistry Mechanics of Materials Telluride Thermoelectric effect Screen printing Materials Chemistry Optoelectronics business Tellurium |
| Zdroj: | Journal of Alloys and Compounds. 582:177-180 |
| ISSN: | 0925-8388 |
| Popis: | We herein report the thermoelectric properties of Sb 2 Te 3 thick film fabricated by a screen-printing technique and a subsequent annealing process. Each step of the screen-printing fabrication process of Sb 2 Te 3 thick film is described in detail. It was found that the subsequent annealing process must be carefully designed to achieve good thermoelectric properties of the screen-printed film. The results show that the annealing of the screen-printed Sb 2 Te 3 thick film together with tellurium powder in the same process chamber significantly improves the carrier mobility by increasing the average scattering time of the carrier in the film, resulting in a large improvement of the power factor. By optimizing the annealing process, we achieved a maximum thermoelectric figure-of-merit, ZT, of 0.32 at room temperature, which is slightly higher than that of bulk Sb 2 Te 3 . Because screen-printing is a simple and low-cost process and given that it is easy to scale up to large sizes, this result will be useful for the realization of large, film-type thermoelectric devices. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect