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Thermoelectric Properties of the Semiconducting Antimonide-Telluride Mo3Sb5-xTe2+x

Published online by Cambridge University Press:  01 February 2011

Enkhtsetseg Dashjav  and
Holger Kleinke
Enkhtsetseg Dashjav
Affiliation:
Department of Chemistry, University of Waterloo, Waterloo, Ontario, Canada N2L 3G1 E-mail: kleinke@uwaterloo.ca
Holger Kleinke
Affiliation:
Department of Chemistry, University of Waterloo, Waterloo, Ontario, Canada N2L 3G1 E-mail: kleinke@uwaterloo.ca
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Abstract

Typically, useful thermoelectrics are small-gap semiconductors. Mo3Sb7 would be an interesting candidate, if it were not metallic. Electronic structure calculations reveal that metallic Mo3Sb7 can be made semiconducting by heavy doping, e.g., by replacing Sb in part with Te. We succeeded in the preparation of semiconducting Mo3Sb5-xTe2+x with enhanced thermoelectric properties. Furthermore, we incorporated small M atoms into the cubic Sb/Te cage in an attempt to create the rattling effect as found in the filled skutterudites that have attracted wide interest for their outstanding thermoelectric properties.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 730: Symposium V – Materials for Energy Storage, Generation, and Transport , 2002 , V5.7
Copyright
Copyright © Materials Research Society 2002

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