Thermoelectric properties of p-type Ag1-x(Pb1-ySny)mSb1-zTem+2

Kyunghan Ahn, Huijun Kong, Ctirad Uher, Mercouri G Kanatzidis

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3 Citations (Scopus)

Abstract

The thermoelectric properties of Ag1-x (Pb1 -y Sn y ) m Sb1 -z Te m+2 (4≤m≤16, -0.1≤x≤0.3, 1/3≤y≤2/3, 0.2≤z≤0.4; Lead Antimony Silver Tellurium Tin, LASTT-m) compositions were investigated in the temperature range of 300 to ~670K. All samples crystallize in the average NaCl-type structure without any noticeable second phase and exhibit very narrow bandgaps of 0.9Pb5Sn5Sb0.8Te12 mainly due to the very low lattice thermal conductivity of ~0.4W/(mK) around 660K. Also, samples with charge-balanced stoichiometries, Ag(Pb1 -y Sn y ) m SbTe m+2, were studied and found to exhibit a lower power factor and higher lattice thermal conductivity than the Ag1 -x (Pb1 -y Sn y ) m Sb1 -z Te m+2 compositions.

Original languageEnglish
JournalJournal of Solid State Chemistry
DOIs
Publication statusAccepted/In press - Dec 22 2015

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Keywords

  • Chalcogenides
  • Thermoelectricity

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Inorganic Chemistry
  • Physical and Theoretical Chemistry
  • Ceramics and Composites
  • Electronic, Optical and Magnetic Materials
  • Materials Chemistry

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