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Thermoelectric properties of p-type polycrystalline SnSe doped with Ag

Chen, Cheng-Lung and Wang, Heng and Chen, Yang-Yuan and Day, Tristan and Snyder, G. Jeffrey (2014) Thermoelectric properties of p-type polycrystalline SnSe doped with Ag. Journal of Materials Chemistry A, 2 (29). pp. 11171-11176. ISSN 2050-7488. http://resolver.caltech.edu/CaltechAUTHORS:20140818-084929841

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Abstract

Many IV–VI semiconductors tend to be good thermoelectric materials, these include all Pb chalcogenides as well as Pb-free SnTe: all of which crystallize in a NaCl cubic structure. Another group of IV–VI compounds form layered orthorhombic structures. SnSe is one of these compounds, whose transport properties as a polycrystalline thermoelectric material have rarely been studied. Here we present our study of p-type polycrystalline SnSe doped with Ag, prepared by melting and hot pressing. SnSe has anisotropic properties with hysteresis observed in resistivity between 300 and 650 K regardless of doping. Ag is not an ideal dopant but is able to increase the carrier density significantly, as a result a peak zT of 0.6 was observed at 750 K. Transport properties of doped SnSe can be explained with a single parabolic band model, which suggests promising potential for this compound together with its challenges.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1039/c4ta01643bDOIArticle
http://pubs.rsc.org/en/Content/ArticleLanding/2014/TA/c4ta01643bPublisherArticle
http://www.rsc.org/suppdata/ta/c4/c4ta01643b/c4ta01643b1.pdfRelated ItemSupplementary Info
ORCID:
AuthorORCID
Snyder, G. Jeffrey0000-0003-1414-8682
Additional Information:© 2014 The Royal Society of Chemistry. Received 04 Apr 2014, Accepted 02 May 2014. First published online 02 May 2014. H. W., T. D. and G. J. S. thank the Bosch-BERN and AFOSR-MURI programs for funding.
Funders:
Funding AgencyGrant Number
Air Force Office of Scientific Research (AFOSR)UNSPECIFIED
Record Number:CaltechAUTHORS:20140818-084929841
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20140818-084929841
Official Citation:Thermoelectric properties of p-type polycrystalline SnSe doped with Ag Cheng-Lung Chen, Heng Wang, Yang-Yuan Chen, Tristan Day and G. Jeffrey Snyder J. Mater. Chem. A, 2014, 2, 11171-11176 DOI: 10.1039/C4TA01643B
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:48639
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:19 Aug 2014 22:11
Last Modified:18 Nov 2016 17:18

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