Thermoelectric properties of the nanostructured NaPb18-xSn xMTe20 (M=Sb, Bi) materials

Aurelie Gueguen, Pierre Ferdinand Poudeu Poudeu, Robert Pcionek, Huijun Kong, Ctirad Uher, Mercouri G. Kanatzidis

Research output: Contribution to journalConference article

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Abstract

The thermoelectric properties of materials with compositions NaPb 18-xSnxMTe20 (M=Sb, Bi, x=0, 3, 5, 9, 13, 16 and 18) were investigated in the temperature range 300-670K. All compositions exhibited p-type behavior over the measured temperature range. Electronic properties and transport were tuned through the manipulation of the Pb/Sn ratio. Increasing the Sn fraction results in an increase in electrical conductivity and a decrease in thermopower. The compositions NaPb13Sn 5SbTe20 and NaPb9Sn9SbTe 20 show a lattice thermal conductivity of ̃1 W/m/K at room temperature.

Original languageEnglish
Pages (from-to)349-354
Number of pages6
JournalMaterials Research Society Symposium Proceedings
Volume1044
Publication statusPublished - Oct 9 2008
EventThermoelectric Power Generation - Boston, MA, United States
Duration: Nov 26 2007Nov 29 2007

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ASJC Scopus subject areas

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

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