Band structure engineering through orbital interaction for enhanced thermoelectric power factor
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Ceder_Band structure.pdf
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Author(s)
Zhu, Hong
Sun, Wenhao
Armiento, Rickard R.
Lazic, Predrag
Ceder, Gerbrand
Date Issued
February 2014
Journal
Applied Physics Letters
Publisher
American Institute of Physics
Citation
Zhu, Hong, Wenhao Sun, Rickard Armiento, Predrag Lazic, and Gerbrand Ceder. “Band Structure Engineering through Orbital Interaction for Enhanced Thermoelectric Power Factor.” Appl. Phys. Lett. 104, no. 8 (February 24, 2014): 082107. © 2014 AIP Publishing LLC.
Version
Final published version
Abstract
Band structure engineering for specific electronic or optical properties is essential for the further development of many important technologies including thermoelectrics, optoelectronics, and microelectronics. In this work, we report orbital interaction as a powerful tool to finetune the band structure and the transport properties of charge carriers in bulk crystalline semiconductors. The proposed mechanism of orbital interaction on band structure is demonstrated for IV-VI thermoelectric semiconductors. For IV-VI materials, we find that the convergence of multiple carrier pockets not only displays a strong correlation with the s-p and spin-orbit coupling but also coincides with the enhancement of power factor. Our results suggest a useful path to engineer the band structure and an enticing solid-solution design principle to enhance thermoelectric performance.
MIT Department
Massachusetts Institute of Technology. Department of Materials Science and Engineering
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1063/1.4866861
