Published May 1, 2016
| Published
Journal Article
Open
Dislocation strain as the mechanism of phonon scattering at grain boundaries
Chicago
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Abstract
Thermal conductivities of polycrystalline thermoelectric materials are satisfactorily calculated by replacing the commonly used Casimir model (freqeuncy-independent) with grain boundary dislocation strain model (frequency-dependent) of Klemens. It is demonstrated that the grain boundaries are better described as a collection of dislocations rather than perfectly scattering interfaces.
Additional Information
© 2016 The Royal Society of Chemistry. Received 14 Dec 2015, Accepted 22 Feb 2016, First published online 26 Feb 2016. The authors would like to acknowledge funding from the Solid-State Solar-Thermal Energy Conversion Center (S3TEC), an Energy Frontier Research Center funded by the U.S. Department of Energy, Office of Science, Basic Energy Sciences under Award # DE-SC0001299. H.-S. Kim gratefully acknowledge financial support from Samsung Advanced Institute of Technology (SAIT). The authors would like to acknowledge useful discussions with Dr. Zachary Gibbs.Attached Files
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Additional details
- Eprint ID
- 67495
- Resolver ID
- CaltechAUTHORS:20160531-105536060
- Department of Energy (DOE)
- DE-SC0001299
- Samsung Advanced Institute of Technology (SAIT)
- Created
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2016-05-31Created from EPrint's datestamp field
- Updated
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2021-11-11Created from EPrint's last_modified field