Thermoelectric properties of indium doped PbTe_(1-y)Se_y alloys
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.
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."Attached Files
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Additional details
- Alternative title
- Thermoelectric properties of indium doped PbTe1-ySey alloys
- Eprint ID
- 49583
- Resolver ID
- CaltechAUTHORS:20140911-094504048
- Indo-US Science and Technology Forum (IUSSTF)
- American Physical Society
- Created
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2014-09-11Created from EPrint's datestamp field
- Updated
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2021-11-10Created from EPrint's last_modified field