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Title: Giant Pressure-Induced Enhancement of Seebeck Coefficient and Thermoelectric Efficiency in SnTe

Abstract

The thermoelectric properties of polycrystalline SnTe have been measured up to 4.5 GPa at 330 K. SnTe shows an enormous enhancement in Seebeck coefficient, greater than 200 % after 3 GPa, which correlates to a known pressure-induced structural phase transition that is observed through simultaneous in situ X-ray diffraction measurement. We also measured electrical resistance and relative changes to the thermal conductivity, enabling the determination of relative changes in the dimensionless figure of merit (ZT), which increases dramatically after 3 GPa, reaching 350 % of the lowest pressure ZT value. Our results demonstrate a fundamental relationship between structure and thermoelectric behaviours and suggest that pressure is an effective tool to control them.

Authors:
 [1];  [1]; ORCiD logo [2];  [2];  [1]; ORCiD logo [3]
  1. Univ. of Nevada, Las Vegas, NV (United States). High Pressure Science and Engineering Center (HiPSEC), Dept. of Physics and Astronomy
  2. Carnegie Inst. of Washington, Argonne, IL (United States). Geophysical Lab.
  3. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Publication Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA); USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1408846
Alternate Identifier(s):
OSTI ID: 1405544
Report Number(s):
LA-UR-17-28893
Journal ID: ISSN 1439-4235; TRN: US1702956
Grant/Contract Number:  
AC52-06NA25396; NA0001982; NA0001974; AC02-06CH11357; FG02-99ER45775
Resource Type:
Accepted Manuscript
Journal Name:
ChemPhysChem
Additional Journal Information:
Journal Volume: 18; Journal Issue: 23; Journal ID: ISSN 1439-4235
Publisher:
ChemPubSoc Europe
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; pressure, Seebeck Coefficient

Citation Formats

Baker, Jason, Kumar, Ravhi, Park, Changyong, Kenney-Benson, Curtis, Cornelius, Andrew, and Velisavljevic, Nenad. Giant Pressure-Induced Enhancement of Seebeck Coefficient and Thermoelectric Efficiency in SnTe. United States: N. p., 2017. Web. doi:10.1002/cphc.201700994.
Baker, Jason, Kumar, Ravhi, Park, Changyong, Kenney-Benson, Curtis, Cornelius, Andrew, & Velisavljevic, Nenad. Giant Pressure-Induced Enhancement of Seebeck Coefficient and Thermoelectric Efficiency in SnTe. United States. doi:10.1002/cphc.201700994.
Baker, Jason, Kumar, Ravhi, Park, Changyong, Kenney-Benson, Curtis, Cornelius, Andrew, and Velisavljevic, Nenad. Mon . "Giant Pressure-Induced Enhancement of Seebeck Coefficient and Thermoelectric Efficiency in SnTe". United States. doi:10.1002/cphc.201700994. https://www.osti.gov/servlets/purl/1408846.
@article{osti_1408846,
title = {Giant Pressure-Induced Enhancement of Seebeck Coefficient and Thermoelectric Efficiency in SnTe},
author = {Baker, Jason and Kumar, Ravhi and Park, Changyong and Kenney-Benson, Curtis and Cornelius, Andrew and Velisavljevic, Nenad},
abstractNote = {The thermoelectric properties of polycrystalline SnTe have been measured up to 4.5 GPa at 330 K. SnTe shows an enormous enhancement in Seebeck coefficient, greater than 200 % after 3 GPa, which correlates to a known pressure-induced structural phase transition that is observed through simultaneous in situ X-ray diffraction measurement. We also measured electrical resistance and relative changes to the thermal conductivity, enabling the determination of relative changes in the dimensionless figure of merit (ZT), which increases dramatically after 3 GPa, reaching 350 % of the lowest pressure ZT value. Our results demonstrate a fundamental relationship between structure and thermoelectric behaviours and suggest that pressure is an effective tool to control them.},
doi = {10.1002/cphc.201700994},
journal = {ChemPhysChem},
number = 23,
volume = 18,
place = {United States},
year = {2017},
month = {10}
}

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