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Reduction of the Lattice Thermal Conductivity in Immiscible PbS-PbTe Systems

Published online by Cambridge University Press:  01 February 2011

Simon Johnsen ,
Steven N Girard ,
Ilyia Todorov ,
Duck Young Chung  and
Mercouri Kanatzidis
Simon Johnsen
Affiliation:
s-johnsen@northwestern.edu, Northwestern University, Department of Chemistry, Evanston, Illinois, United States
Steven N Girard
Affiliation:
s-girard@northwestern.edu, Northwestern University, Chemistry, 2145 Sheridan Rd., Evanston, Illinois, 60208-3113, United States
Ilyia Todorov
Affiliation:
istodorov@yahoo.com, Argonne National Lab, Argonne, United States
Duck Young Chung
Affiliation:
dychung@anl.gov, Argonne National Laboratory, Materials Science Division, Argonne, Illinois, United States
Mercouri Kanatzidis
Affiliation:
m-kanatzidis@northwestern.edu, Northwestern University, Department of Chemistry, Evanston, Illinois, United States
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Abstract

The synthesis and properties characterization of several PbS1-xTexx = 0-0.16 samples are presented. Notably it is shown how a local minimum occurs in the thermal diffusivity for the PbS1-xTex samples at x ≈ 0.03. The thermoelectric properties of doped PbS1-xTex with x = 0.03 are reported and the properties are compared to the pure PbS and PbTe end members. The electronic contribution to the total thermal conductivity is analyzed for PbS1-xTexx = 0.03 and it is shown how the lattice thermal conductivity is significantly lowered compared to single crystalline PbS.

Keywords

thermoelectricthermal conductivitysemiconducting
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1267: Symposium DD – Thermoelectric Materials 2010-Growth, Properties, Novel Characterization Methods and Applications , 2010 , 1267-DD06-03
Copyright
Copyright © Materials Research Society 2010

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