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Thermoelectric Generators Made with Novel Lead Telluride Based Materials

Published online by Cambridge University Press:  31 January 2011

Chun-I Wu
Affiliation:
wuchuni@msu.edu, Michigan State University, Electrical and Computer Engineering, East Lansing, Michigan, United States
Steven N Girard
Affiliation:
s-girard@northwestern.edu, Northwestern University, Chemistry, Evanston, Illinois, United States
Joseph Sootsman
Affiliation:
j-sootsman@northwestern.edu, Northwestern University, Chemistry, Evanston, Illinois, United States
Edward Timm
Affiliation:
timm@egr.msu.edu, Michigan State University, Mechanical Engineering, East Lansing, Michigan, United States
Jennifer Ni
Affiliation:
Michigan State University, Chemical Engineering and Materials Science, East Lansing, Michigan, United States
Robert Schmidt
Affiliation:
schmi402@msu.edu, Michigan State University, Chemical Engineering and Materials Science, East Lansing, Michigan, United States
Mercouri Kanatzidis
Affiliation:
m-kanatzidis@northwestern.edu, Northwestern University, Chemistry, Evanston, Illinois, United States
Harold Schock
Affiliation:
schock@msu.edu, Michigan State University, Mechanical Engineering, East Lansing, Michigan, United States
Eldon D. Case
Affiliation:
casee@egr.msu.edu, Michigan State University, Chemical Engineering and Materials Science, East Lansing, Michigan, United States
Duck Young Chung
Affiliation:
dychung@anl.gov, Argonne National Laboratory, Materials Science Division, Argonne, Illinois, United States
Timothy Hogan
Affiliation:
hogant@msu.edu, Michigan State University, Chemical Engineering and Materials Science, East Lansing, Michigan, United States
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Abstract

For the material (Pb0.95Sn0.05Te)1-x(PbS)x nanostructuring from nucleation and growth and spinodal decomposition were reported to enhance the thermoelectric figure of merit over bulk PbTe, producing ZT of 1.1 - 1.4 at 650 K for x = 0.08[1]. Thermoelectric modules made from (Pb0.95Sn0.05Te)1-x(PbS)x materials with various hot-side metal electrodes were fabricated and tested. Short circuit current was measured on unicouples of Pb0.95Sn0.05Te – PbS 8% (n-type) legs and Ag0.9Pb9Sn9Sb0.6Te20 (p-type) legs over 10 (A) for a hot side temperature of 870K, and a cold side of 300K. Hot pressed (Pb0.95Sn0.05Te)1-x(PbS)x materials were also investigated for module fabrication. Investigations of the electrical properties of hot-pressed (Pb0.95Sn0.05Te)1-x(PbS)x materials are presented along with the latest advancements in the fabrication and characteristics of modules based on the processing of these materials.

Type
Research Article
Copyright
Copyright © Materials Research Society 2010

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