Thermoelectric properties of heavily doped n-type SrTiO 3 bulk materials

Yanjie Cui, James R. Salvador, Jihui Yang, Hsin Wang, Gisele Amow, Holger Kleinke

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34 Scopus citations

Abstract

Three Ta-doped strontium titanates were prepared as potential candidates for n-type thermoelectric oxides. The purity of the polycrystalline samples of SrTi 1-x Ta x O 3 (x = 0.05 to 0.14) were characterized by means of powder x-ray diffraction and electron probe micro analysis (EPMA). We present the results of Seebeck coefficient, electrical conductivity, and thermal conductivity measurements performed at high temperatures.

Original languageEnglish
Pages (from-to)1002-1007
Number of pages6
JournalJournal of Electronic Materials
Volume38
Issue number7
DOIs
StatePublished - Jul 2009

Funding

Financial support from Defence Research and Development Canada is greatly appreciated. The work is furthermore supported by the GM and by DOE under corporate agreement DE-FC26-04NT42278, and by the Waste Heat Recovery Program via corporate agreement DE-FC26-04NT42278 at Oak Ridge National Laboratory managed by UT-Battelle LLC, for the Department of Energy under contract DE-AC05000OR22725. Elemental analysis was provided by Richard Waldo.

Keywords

  • Electron probe micro analysis
  • Oxides
  • Thermoelectric materials
  • Transport properties

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