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Novel Lead Telluride Based Thermoelectric Materials

Published online by Cambridge University Press:  14 March 2011

Chun-I Wu ,
Steven N. Girard ,
Joe Sootsman ,
Edward Timm ,
Eldon D. Case ,
Mercouri G. Kanatzidis ,
Harold Schock ,
Duck Young Chung  and
Timothy P. Hogan
Chun-I Wu
Affiliation:
Electrical and Computer Engineering Department, Michigan State University, East Lansing, MI 48824, U.S.A.
Steven N. Girard
Affiliation:
Chemistry Department, Northwestern University, USA
Joe Sootsman
Affiliation:
Chemistry Department, Northwestern University, USA
Edward Timm
Affiliation:
Mechanical Engineering Department, Michigan State University, East Lansing, MI 48824, U.S.A.
Eldon D. Case
Affiliation:
Chemical Engineering and Materials Science, Michigan State University, East Lansing, MI 48824, U.S.A.
Mercouri G. Kanatzidis
Affiliation:
Chemistry Department, Northwestern University, USA Materials Science Division, Argonne National Laboratory, USA
Harold Schock
Affiliation:
Mechanical Engineering Department, Michigan State University, East Lansing, MI 48824, U.S.A.
Duck Young Chung
Affiliation:
Materials Science Division, Argonne National Laboratory, USA
Timothy P. Hogan
Affiliation:
Electrical and Computer Engineering Department, Michigan State University, East Lansing, MI 48824, U.S.A. Chemical Engineering and Materials Science, Michigan State University, East Lansing, MI 48824, U.S.A.
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Abstract

PbTe-PbS materials are promising for thermoelectric power generation applications. For the composition of (Pb0.95Sn0.05Te)0.92(PbS)0.08 nanostructuring from nucleation and growth and spinodal decomposition has been reported along with thermal conductivity of approximately 1.1 W/m·K at 650 K [1]. Based on temperature-dependent measurements of electrical conductivity, thermopower, and thermal conductivity, the thermoelectric figure of merit, ZT, are ~1.5 at 650 K for cast ingots.

To develop larger quantities of material for device fabrication, advancement in the synthesis, processing and production of (Pb0.95Sn0.05Te)0.92(PbS)0.08 is necessary. Powder processing of samples is a well-known technique for increasing sample strength, and uniformity. In this presentation, we show sample fabrication and processing details of pulsed electric current sintering (PECS) processed (Pb0.95Sn0.05Te)0.92(PbS)0.08 materials and their thermoelectric properties along with the latest advancements in the preparation of these materials.

Keywords

thermoelectricsinteringpowder processing
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1314: Symposium LL – Thermoelectric Materials for Solid-State Power Generation and Refrigeration , 2011 , mrsf10-1314-ll10-09
Copyright
Copyright © Materials Research Society 2011

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References

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