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Development of nanostructures in thermoelectric Pb-Te-Sb alloys

Ikeda, T. and Ravi, C. and Collins, L. A. and Haile, S. M. and Snyder, G. J. (2006) Development of nanostructures in thermoelectric Pb-Te-Sb alloys. In: XXV International Conference on Thermoelectrics, Proceedings. IEEE , Piscataway, NJ, pp. 172-175. ISBN 1-4244-0811-3.

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In analogy to recent demonstrations of enhanced thermoelectric properties in superlattice materials, composite structures with nanoscale features promise dramatic improvements in the figure of merit of thermoelectric materials. Fabrication of nanostructured thermoelectric materials via bulk synthesis is an attractive route for commercial applications. Nanometer scale lamellae of PbTe and Sb_2 Te_3 form when quenched eutectic PbTe-Sb_2Te_3 melt is subsequently annealed. The lamellar spacing depends on the temperature and time of the anneal. The mechanism for the development of the nanostructures can be characterized by examining the fraction of material transformed as a function of anneal time. Preliminary analysis of the shape factor exponent reveals that the evolution of the nanostructured lamellae is likened to the thickening of very large plates. The coarsening of the lamellar spacing is also examined as a function of time.

Item Type:Book Section
Related URLs:
URLURL TypeDescription DOIArticle
Ikeda, T.0000-0001-7076-6958
Haile, S. M.0000-0002-5293-6252
Snyder, G. J.0000-0003-1414-8682
Additional Information:© 2006 IEEE. Issue Date: 6-10 Aug. 2006. Date of Current Version March 19, 2007. This work was supported by the Office of Naval Research. LC was supported by the SURF program at Caltech.
Funding AgencyGrant Number
Office of Naval Research (ONR)UNSPECIFIED
Caltech Summer Undergraduate Research Fellowship (SURF)UNSPECIFIED
Subject Keywords:Thermoelectric, Lamellar spacing, Fraction transformed, Coarsening
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INSPEC Accession Nunber:9473851
Record Number:CaltechAUTHORS:20110630-112442325
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Official Citation:Ikeda, T.; Ravi, V.; Collins, L.A.; Haile, S.M.; Snyder, G.J.; , "Development of Nanostructures in Thermoelectric Pb-Te-Sb Alloys," Thermoelectrics, 2006. ICT '06. 25th International Conference on , vol., no., pp.172-175, 6-10 Aug. 2006 doi: 10.1109/ICT.2006.331326 URL:
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:24275
Deposited By: Ruth Sustaita
Deposited On:30 Jun 2011 18:56
Last Modified:09 Nov 2021 16:22

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