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Issue 6, 2011
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Reevaluation of PbTe1−xIx as high performance n-type thermoelectric material

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Abstract

Thermoelectric transport properties of n-type PbTe1−xIx with carrier concentrations ranging from 5.8 × 1018–1.4 × 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.

Graphical abstract: Reevaluation of PbTe1−xIx as high performance n-type thermoelectric material

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Publication details

The article was received on 18 Mar 2011, accepted on 26 Apr 2011 and first published on 19 May 2011


Article type: Paper
DOI: 10.1039/C1EE01314A
Citation: Energy Environ. Sci., 2011,4, 2090-2096
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    Reevaluation of PbTe1−xIx as high performance n-type thermoelectric material

    A. D. LaLonde, Y. Pei and G. J. Snyder, Energy Environ. Sci., 2011, 4, 2090
    DOI: 10.1039/C1EE01314A

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