Bottom-Up Metal/Oxide/Bi<sub>2</sub>Te<sub>3</sub> Heterostructures for Enhanced Thermoelectric Properties
In this paper, metals’ (Cu, Ag, Au)/Al<sub>2</sub>O<sub>3</sub>/Bi<sub>2</sub>Te<sub>3</sub> heterostructures have been fabricated to synergistically optimize their carrier concentration and mobility, thereby enhancing their thermoelectric power factor...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2020-12-01
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| Series: | Proceedings |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2504-3900/56/1/14 |
| Summary: | In this paper, metals’ (Cu, Ag, Au)/Al<sub>2</sub>O<sub>3</sub>/Bi<sub>2</sub>Te<sub>3</sub> heterostructures have been fabricated to synergistically optimize their carrier concentration and mobility, thereby enhancing their thermoelectric power factor. Metal can be alloyed with Bi<sub>2</sub>Te<sub>3</sub> to reduce the electron concentration. The introduction of the oxide layer further reduces the electron concentration and leads to an increase in mobility. By adjusting the metal and oxide layer, it is possible to realize the simultaneous optimization of electric conductivity and the Seebeck coefficient. This work will enable the optimal and novel design of heterstructures for thermoelectric materials with further improved performance. |
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| ISSN: | 2504-3900 |