Reevaluation of PbTe1-xIx as high performance n-type thermoelectric material

Aaron D. Lalonde, Yanzhong Pei, G. Jeffrey Snyder

Research output: Contribution to journalArticlepeer-review

315 Scopus citations

Abstract

Thermoelectric transport properties of n-type PbTe1-xI x with carrier concentrations ranging from 5.8 × 10 18-1.4 × 1020 cm-3 are reinvestigated from room temperature to 800 K. The electronic transport properties, resistivity and Seebeck coefficient in this study are effectively consistent with prior reports, however the thermal conductivity has been found to be historically overestimated. The reassessment of the thermal transport properties, in combination with careful control of the carrier density by iodine doping, reveals a significantly larger figure of merit, zT ∼ 1.4, than often previously reported for n-type PbTe. The results and analysis of the data from this study lead to a redetermination of zT for this historical thermoelectric material and provide a renewed interest in n-type PbTe based materials.

Original languageEnglish (US)
Pages (from-to)2090-2096
Number of pages7
JournalEnergy and Environmental Science
Volume4
Issue number6
DOIs
StatePublished - Jun 2011

ASJC Scopus subject areas

  • Environmental Chemistry
  • Renewable Energy, Sustainability and the Environment
  • Nuclear Energy and Engineering
  • Pollution

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