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Title: The Thermoelectric Properties and Solubility Limit of CuFeS 2(1-x)Se 2x

Abstract

CuFeS 2 is an earth-abundant material with a potential for use in thermoelectric power generation. It is an n-type semiconductor with a small band gap, a large thermopower, and a low electrical resistivity. Previous studies have focused on the electrical properties and doping the material, to some success. In this study, we investigate the effects of selenium substitution on the sulfur site in an attempt to lower thermal conductivity while maintaining good electrical properties. Here, our results shows that selenium substitution is an effective method of improving zT through a large increase in power factor, and works well for reducing thermal conductivity at room temperature, but is not as effective in this regard at higher temperatures.

Authors:
;
Publication Date:
Research Org.:
Energy Frontier Research Centers (EFRC) (United States). Revolutionary Materials for Solid State Energy Conversion (RMSSEC)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1370349
DOE Contract Number:  
SC0001054
Resource Type:
Journal Article
Journal Name:
Journal of Electronic Materials
Additional Journal Information:
Journal Volume: 45; Journal Issue: 3; Related Information: RMSSEC partners with Michigan State University (lead); University of California, Los Angeles; University of Michigan; Northwestern University; Oak Ridge National Laboratory; Ohio State University; Wayne State University; Journal ID: ISSN 0361-5235
Publisher:
Springer
Country of Publication:
United States
Language:
English
Subject:
Thermoelectrics; earth-abundant; chalcopyrite; copper-based

Citation Formats

Carr, Winston D., and Morelli, Donald T. The Thermoelectric Properties and Solubility Limit of CuFeS2(1-x)Se2x. United States: N. p., 2015. Web. doi:10.1007/s11664-015-4029-5.
Carr, Winston D., & Morelli, Donald T. The Thermoelectric Properties and Solubility Limit of CuFeS2(1-x)Se2x. United States. doi:10.1007/s11664-015-4029-5.
Carr, Winston D., and Morelli, Donald T. Wed . "The Thermoelectric Properties and Solubility Limit of CuFeS2(1-x)Se2x". United States. doi:10.1007/s11664-015-4029-5.
@article{osti_1370349,
title = {The Thermoelectric Properties and Solubility Limit of CuFeS2(1-x)Se2x},
author = {Carr, Winston D. and Morelli, Donald T.},
abstractNote = {CuFeS2 is an earth-abundant material with a potential for use in thermoelectric power generation. It is an n-type semiconductor with a small band gap, a large thermopower, and a low electrical resistivity. Previous studies have focused on the electrical properties and doping the material, to some success. In this study, we investigate the effects of selenium substitution on the sulfur site in an attempt to lower thermal conductivity while maintaining good electrical properties. Here, our results shows that selenium substitution is an effective method of improving zT through a large increase in power factor, and works well for reducing thermal conductivity at room temperature, but is not as effective in this regard at higher temperatures.},
doi = {10.1007/s11664-015-4029-5},
journal = {Journal of Electronic Materials},
issn = {0361-5235},
number = 3,
volume = 45,
place = {United States},
year = {2015},
month = {9}
}

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