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Thermoelectric properties of indium doped PbTe_(1-y)Se_y alloys

Bali, Ashoka and Wang, Heng and Snyder, G. Jeffrey and Mallik, Ramesh Chandra (2014) Thermoelectric properties of indium doped PbTe_(1-y)Se_y alloys. Journal of Applied Physics, 116 (3). Art. No. 033707. ISSN 0021-8979. http://resolver.caltech.edu/CaltechAUTHORS:20140911-094504048

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Abstract

Lead telluride and its alloys are well known for their thermoelectric applications. Here, a systematic study of PbTe_(1-y)Se_y alloys doped with indium has been done. The powder X-Ray diffraction combined with Rietveld analysis confirmed the polycrystalline single phase nature of the samples, while microstructural analysis with scanning electron microscope results showed densification of samples and presence of micrometer sized particles. The temperature dependent transport properties showed that in these alloys, indium neither pinned the Fermi level as it does in PbTe, nor acted as a resonant dopant as in SnTe. At high temperatures, bipolar effect was observed which restricted the zT to 0.66 at 800 K for the sample with 30% Se content.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1063/1.4890320DOIArticle
http://scitation.aip.org/content/aip/journal/jap/116/3/10.1063/1.4890320PublisherArticle
ORCID:
AuthorORCID
Snyder, G. Jeffrey0000-0003-1414-8682
Alternate Title:Thermoelectric properties of indium doped PbTe1-ySey alloys
Additional Information:© 2014 AIP Publishing LLC. Received 31 May 2014; accepted 3 July 2014; published online 18 July 2014. One of the authors (AB) would like to acknowledge Indo-US Science and Technology Forum (IUSSTF) and American Physical Society (APS) for the grant received under the “APS-IUSSTF Physics Student Visitation Program.”
Funders:
Funding AgencyGrant Number
Indo-US Science and Technology Forum (IUSSTF)UNSPECIFIED
American Physical SocietyUNSPECIFIED
Record Number:CaltechAUTHORS:20140911-094504048
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20140911-094504048
Official Citation:Thermoelectric properties of indium doped PbTe1-ySey alloys Ashoka Bali, Heng Wang, G. Jeffrey Snyder and Ramesh Chandra Mallik J. Appl. Phys. 116, 033707 (2014); http://dx.doi.org/10.1063/1.4890320
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:49583
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:11 Sep 2014 21:59
Last Modified:18 Nov 2016 17:19

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