Comparison of Thermoelectric Transport Measurement Techniques Using n-type PbSe

Heng Wang*, Mikhail I. Fedorov, Aleksander A. Shabaldin, Piotr P. Konstantinov, G. Jeffrey Snyder

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

We compare high-temperature thermoelectric transport measurements at two different institutes using different setups. The material studied is n-type PbSe doped with Cl. The measurements at the Ioffe Institute used a steady-state design which allowed all three properties to be measured simultaneously from bar-shaped samples. Those at Caltech have used Van der Pauw geometry for resistivity, an oscillation method for the Seebeck coefficient, and a laser flash technique for thermal conductivity. The results for each individual property show differences around 10% in some cases, while the evaluation of overall zT for the three samples with different doping levels is mostly below 10%. The steady-state method at the Ioffe Institute was able to measure thermal conductivity at high temperature as accurately as the laser flash method. In general, great caution is needed for any setup in order to accurately measure high-temperature transport properties and hence zT.

Original languageEnglish (US)
Pages (from-to)1967-1971
Number of pages5
JournalJournal of Electronic Materials
Volume44
Issue number6
DOIs
StatePublished - Jun 1 2015

Keywords

  • heat capacity
  • Seebeck coefficient
  • thermal conductivity
  • Thermoelectrics

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering
  • Materials Chemistry

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