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Investigation of Cubic PbS/AgSbS2 System for Thermoelectric Applications

Published online by Cambridge University Press:  01 February 2011

Iliya Todorov ,
Duck-Young Chung  and
Mercouri Kanatzidis
Iliya Todorov
Affiliation:
[email protected], Argonne National Laboratory, Materials Science Division, 9700 S. Cass Ave., Argonne, IL, 60439, United States
Duck-Young Chung
Affiliation:
[email protected], Argonne National Laboratory, Materials Science Division, 9700 S. Cass Ave., Arg onne, IL, 60439, United States
Mercouri Kanatzidis
Affiliation:
[email protected], Northwestern University, Department of Chemistry, 2145 Sheridan Road, Evanston, IL, 60208, United States
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Abstract

Investigation of a family of bulk cubic compounds with general formula AgPbmMS2+m (M = Sb, Bi) is reported. These PbS-based cubic structured quaternary systems combine a set of desirable features for efficient ZT thermoelectric materials for solar thermal power generation. AgPbmMS2+m (M = Sb, Bi) possess an average NaCl structure (Fm-3m symmetry), high melting point (991 - 1095 °C for M = Sb; 865 - 1091 °C for M = Bi), relatively wide energy gap (0.7 > Eg (eV) > 0.39 for both Sb and Bi). The systematic variation of lattice parameters, energy gap and melting point is reported. Preliminary charge transport properties are reported along with variable temperature thermal conductivity data of selected members.

Keywords

thermoelectricitythermal conductivityelectrical properties
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1044: Symposium U – Thermoelectric Power Generation , 2007 , 1044-U03-16
Copyright
Copyright © Materials Research Society 2008

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