Thermoelectric properties of semiconductor-metal composites produced by particle blending

Y. Liu, D. Cadavid, M. Ibanez Sabate, S. Ortega, S. Márti Sánchez, O. Dobrozhan, M. Kovalenko, J. Arbiol, A. Cabot, Applied Physics Letters 4 (2016).

Download
No fulltext has been uploaded. References only!

Journal Article | Published | English
Author
; ; ; ; ; ; ; ;
Abstract
In the quest for more efficient thermoelectric material able to convert thermal to electrical energy and vice versa, composites that combine a semiconductor host having a large Seebeck coefficient with metal nanodomains that provide phonon scattering and free charge carriers are particularly appealing. Here, we present our experimental results on the thermal and electrical transport properties of PbS-metal composites produced by a versatile particle blending procedure, and where the metal work function allows injecting electrons to the intrinsic PbS host. We compare the thermoelectric performance of composites with microcrystalline or nanocrystalline structures. The electrical conductivity of the microcrystalline host can be increased several orders of magnitude with the metal inclusion, while relatively high Seebeck coefficient can be simultaneously conserved. On the other hand, in nanostructured materials, the host crystallites are not able to sustain a band bending at its interface with the metal, becoming flooded with electrons. This translates into even higher electrical conductivities than the microcrystalline material, but at the expense of lower Seebeck coefficient values.
Publishing Year
Date Published
2016-08-29
Journal Title
Applied Physics Letters
Volume
4
IST-REx-ID

Cite this

Liu Y, Cadavid D, Ibanez Sabate M, et al. Thermoelectric properties of semiconductor-metal composites produced by particle blending. Applied Physics Letters. 2016;4. doi:https://doi.org/10.1063/1.4961679
Liu, Y., Cadavid, D., Ibanez Sabate, M., Ortega, S., Márti Sánchez, S., Dobrozhan, O., … Cabot, A. (2016). Thermoelectric properties of semiconductor-metal composites produced by particle blending. Applied Physics Letters, 4. https://doi.org/10.1063/1.4961679
Liu, Yu, Doris Cadavid, Maria Ibanez Sabate, Silvia Ortega, Sara Márti Sánchez, Oleksander Dobrozhan, Maksym Kovalenko, Jordi Arbiol, and Andreu Cabot. “Thermoelectric Properties of Semiconductor-Metal Composites Produced by Particle Blending.” Applied Physics Letters 4 (2016). https://doi.org/10.1063/1.4961679.
Y. Liu et al., “Thermoelectric properties of semiconductor-metal composites produced by particle blending,” Applied Physics Letters, vol. 4, 2016.
Liu Y, Cadavid D, Ibanez Sabate M, Ortega S, Márti Sánchez S, Dobrozhan O, Kovalenko M, Arbiol J, Cabot A. 2016. Thermoelectric properties of semiconductor-metal composites produced by particle blending. Applied Physics Letters. 4.
Liu, Yu, et al. “Thermoelectric Properties of Semiconductor-Metal Composites Produced by Particle Blending.” Applied Physics Letters, vol. 4, American Institute of Physics, 2016, doi:https://doi.org/10.1063/1.4961679.

Export

Marked Publications

Open Data IST Research Explorer

Search this title in

Google Scholar