Published July 1, 2010
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Journal Article
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Thermoelectric property studies on thallium-doped lead telluride prepared by ball milling and hot pressing
Abstract
Thallium doping into lead telluride has been demonstrated to increase the dimensionless thermoelectric figure-of-merit (ZT) by enhancing Seebeck coefficient due to the creation of resonant states close to Fermi level without affecting the thermal conductivity. However, the process is tedious, energy consuming, and small in quantities since it involves melting, slow cooling for crystal growth, long time annealing, post-crushing and hot pressing. Here we show that a similar ZT value about 1.3 at 400 °C is achieved on bulk samples with grain sizes of 3–7 μm by ball milling a mixture of elemental thallium, lead, and tellurium and then hot pressing the ball milled nanopowders.
Additional Information
© 2010 American Institute of Physics. Received 12 March 2010; accepted 15 May 2010; published online 12 July 2010. The work on sample preparation and characterizations is funded by the U.S. Department of Energy, Office of Science, and Office of Basic Energy Sciences under Award No. DEFG02- 08ER46516 (M.S.D., G.C., and Z.F.R.), and some of the transport measurements were performed at Caltech funded by BSST, California (G.J.S.).Attached Files
Published - Yu2010p10957J_Appl_Phys.pdf
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Yu2010p10957J_Appl_Phys.pdf
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Additional details
- Eprint ID
- 19398
- Resolver ID
- CaltechAUTHORS:20100811-141324269
- U.S. Department of Energy
- DE-FG02-08ER46516
- Office of Science, and Office of Basic Energy Sciences
- BSST, California
- Created
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2010-08-13Created from EPrint's datestamp field
- Updated
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2021-11-08Created from EPrint's last_modified field