Enhanced thermoelectric properties of AgSbTe2 obtained by controlling heterophases with Ce doping

Abstract We report the enhanced thermoelectric properties of Ce-doped AgSbTe2 (AgSb1−xCexTe2) compounds. As the Ce contents increased, the proportion of heterophase Ag2Te in the AgSbTe2 gradually decreased, along with the size of the crystals. The electrical resistivity and Seebeck coefficient were...

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Autores principales:	Jae Ki Lee, Min-Wook Oh, Byungki Ryu, Ji Eun Lee, Bong-Seo Kim, Bok-Ki Min, Sung-Jae Joo, Hee-Woong Lee, Su-Dong Park
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/cbc70153314e41f8a746ac35c10a35a3
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spelling	oai:doaj.org-article:cbc70153314e41f8a746ac35c10a35a32021-12-02T15:04:53ZEnhanced thermoelectric properties of AgSbTe2 obtained by controlling heterophases with Ce doping10.1038/s41598-017-04885-12045-2322https://doaj.org/article/cbc70153314e41f8a746ac35c10a35a32017-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-04885-1https://doaj.org/toc/2045-2322Abstract We report the enhanced thermoelectric properties of Ce-doped AgSbTe2 (AgSb1−xCexTe2) compounds. As the Ce contents increased, the proportion of heterophase Ag2Te in the AgSbTe2 gradually decreased, along with the size of the crystals. The electrical resistivity and Seebeck coefficient were dramatically affected by Ce doping and the lattice thermal conductivity was reduced. The presence of nanostructured Ag2Te heterophases resulted in a greatly enhanced dimensionless figure of merit, ZT of 1.5 at 673 K. These findings highlight the importance of the heterophase and doping control, which determines both electrical and thermal properties.Jae Ki LeeMin-Wook OhByungki RyuJi Eun LeeBong-Seo KimBok-Ki MinSung-Jae JooHee-Woong LeeSu-Dong ParkNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-8 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Jae Ki Lee Min-Wook Oh Byungki Ryu Ji Eun Lee Bong-Seo Kim Bok-Ki Min Sung-Jae Joo Hee-Woong Lee Su-Dong Park Enhanced thermoelectric properties of AgSbTe2 obtained by controlling heterophases with Ce doping
description	Abstract We report the enhanced thermoelectric properties of Ce-doped AgSbTe2 (AgSb1−xCexTe2) compounds. As the Ce contents increased, the proportion of heterophase Ag2Te in the AgSbTe2 gradually decreased, along with the size of the crystals. The electrical resistivity and Seebeck coefficient were dramatically affected by Ce doping and the lattice thermal conductivity was reduced. The presence of nanostructured Ag2Te heterophases resulted in a greatly enhanced dimensionless figure of merit, ZT of 1.5 at 673 K. These findings highlight the importance of the heterophase and doping control, which determines both electrical and thermal properties.
format	article
author	Jae Ki Lee Min-Wook Oh Byungki Ryu Ji Eun Lee Bong-Seo Kim Bok-Ki Min Sung-Jae Joo Hee-Woong Lee Su-Dong Park
author_facet	Jae Ki Lee Min-Wook Oh Byungki Ryu Ji Eun Lee Bong-Seo Kim Bok-Ki Min Sung-Jae Joo Hee-Woong Lee Su-Dong Park
author_sort	Jae Ki Lee
title	Enhanced thermoelectric properties of AgSbTe2 obtained by controlling heterophases with Ce doping
title_short	Enhanced thermoelectric properties of AgSbTe2 obtained by controlling heterophases with Ce doping
title_full	Enhanced thermoelectric properties of AgSbTe2 obtained by controlling heterophases with Ce doping
title_fullStr	Enhanced thermoelectric properties of AgSbTe2 obtained by controlling heterophases with Ce doping
title_full_unstemmed	Enhanced thermoelectric properties of AgSbTe2 obtained by controlling heterophases with Ce doping
title_sort	enhanced thermoelectric properties of agsbte2 obtained by controlling heterophases with ce doping
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/cbc70153314e41f8a746ac35c10a35a3
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_version_	1718389043643809792

Enhanced thermoelectric properties of AgSbTe2 obtained by controlling heterophases with Ce doping

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