Thermoelectric properties of nanostructured (Pb1·mSn mTe)1-x (PbS)x with Pb and Sb precipitates.

Steven N. Girard, Joseph R. Sootsman, Chia Her Lin, John Androulakis, Mercouri G. Kanatzidis

Research output: Contribution to journalConference articlepeer-review


We report the physical characterization and thermoelectric properties of (Pb0.95Sn0.05Te)0.92(PbS)0.08 containing excess Pb and Sb prepared using the matrix encapsulation technique. Samples of (Pb0.95Sn0.05Te)0.92(PbS) 0.08: Pb 0.5 - 4 at. % rapidly quenched from the melt show microscale Pb inclusions that increase the thermal conductivity while slightly increasing the power factor, compared to (Pb0.95Sn0.05Te) 0.92(PbS)0.08. Samples of (Pb0.95Sn 0.05Te)0.92(PbS)0.08:Pb 0.5%, Sb 2% prepared using the same technique show microscale Sb and Pb inclusions that upon heating cause rapid PbS and Sb segregation from the Pb Te matrix. This behavior significantly alters the microstructure and degrades the transport properties of the material.

Original languageEnglish
Pages (from-to)101-106
Number of pages6
JournalMaterials Research Society Symposium Proceedings
Publication statusPublished - 2008
Externally publishedYes
EventThermoelectric Power Generation - Boston, MA, United States
Duration: 2007 Nov 262007 Nov 29

ASJC Scopus subject areas

  • General Materials Science
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering


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