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Keywords:

  • thermoelectrics;
  • lead chalcogenides;
  • PbSe;
  • PbTe
Thumbnail image of graphical abstract

PbSe was expected to have a smaller bandgap and higher thermalconductivity than PbTe. Instead, these values are about the same at high temperature leading to comparable thermoelectric figure of merit, with zT> 1 achieved in heavily doped p-type PbSe.