Transport behavior and thermal conductivity reduction in the composite system PbTe-Pb-Sb

Joseph Sootsman*, Huijun Kong, Ctirad Uher, Adam Downey, Jonathan James D'Angelo, Chun I. Wu, Timothy Hogan, Thierry Caillat, Mercouri Kanatzidis

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review

8 Scopus citations

Abstract

We report the synthesis of nanostructured composite PbTe with excess Pb and Sb metal inclusions. Scanning and transmission electron microscopy reveal these inclusions in both the nano- and macroscales. The electrical conductivity and Seebeck coefficient dependence on temperature show unusual trends which depend on the inclusion Pb/Sb ratio. Several ratios showed marked enhancements in power factor at 700 K. The thermal conductivity of these composites is reported.

Original languageEnglish (US)
Pages (from-to)327-332
Number of pages6
JournalMaterials Research Society Symposium Proceedings
Volume1044
StatePublished - Oct 9 2008
EventThermoelectric Power Generation - Boston, MA, United States
Duration: Nov 26 2007Nov 29 2007

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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