Anomalous electronic transport in dual-nanostructured lead telluride

J. Q. He, J. R. Sootsman, L. Q. Xu, S. N. Girard, J. C. Zheng, Mercouri G Kanatzidis, V. P. Dravid

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Abstract

The Pb- and Sb- dual nanostructured PbTe system exhibits anomalous electronic transport behavior wherein the carrier mobility first increases and then decreases with increase in temperature. By combining in situ transmission electron microscopy observations and theoretical calculations based on energy filtering of charge carriers, we propose a plausible mechanism of charge transport based on interphase potential that is mediated by interdiffusion between coexisting Pb and Sb precipitates. These findings promise new strategies to enhance thermoelectric figure of merit via dual and multinanostructuring of miscible precipitates.

Original languageEnglish
Pages (from-to)8786-8789
Number of pages4
JournalJournal of the American Chemical Society
Volume133
Issue number23
DOIs
Publication statusPublished - Jun 15 2011

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ASJC Scopus subject areas

  • Chemistry(all)
  • Catalysis
  • Biochemistry
  • Colloid and Surface Chemistry

Cite this

He, J. Q., Sootsman, J. R., Xu, L. Q., Girard, S. N., Zheng, J. C., Kanatzidis, M. G., & Dravid, V. P. (2011). Anomalous electronic transport in dual-nanostructured lead telluride. Journal of the American Chemical Society, 133(23), 8786-8789. https://doi.org/10.1021/ja2006498