Published July 9, 2012
| Published
Journal Article
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Ternary eutectic growth of nanostructured thermoelectric Ag-Pb-Te materials
Abstract
Nanostructured Ag-Pb-Te thermoelectric materials were fabricated by unidirectionally solidifying the ternary Ag-Pb-Te eutectic and near-eutectic alloys using the Bridgeman method. Specially, the Bridgman-grown eutectic alloy exhibited a partially aligned lamellar microstructure, which consisted of Ag_5Te_3 and Te phases, with additional 200-600 nm size particles of PbTe. The self-assembled interfaces altered the thermal and electronic transport properties in the bulk Ag-Pb-Te eutectic alloy. Presumably due to phonon scattering from the nanoscale microstructure, a low thermal conductivity (κ = 0.3 W/mK) was achieved of the eutectic alloy, leading to a zT peak of 0.41 at 400 K.
Additional Information
© 2012 American Institute of Physics. Received 16 May 2012; accepted 19 June 2012; published online 10 July 2012. The authors acknowledge the financial support of National Science Council of Taiwan (NSC 99-2221-E-007-093-MY3 and Grant 100-2917-I-007-001) and of the Air Force Office of Scientific Research (AFOSR MURI FA9550-10-1-0533) of USA.Attached Files
Published - Wu2012p19113Appl_Phys_Lett.pdf
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Wu2012p19113Appl_Phys_Lett.pdf
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Additional details
- Eprint ID
- 33081
- Resolver ID
- CaltechAUTHORS:20120810-105036584
- NSC 99-2221-E-007-093-MY3
- National Science Council (Taipei)
- 100-2917-I-007-001
- National Science Council (Taipei)
- FA9550-10-1-0533
- Air Force Office of Scientific Research (AFOSR)
- Created
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2012-08-10Created from EPrint's datestamp field
- Updated
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2021-11-09Created from EPrint's last_modified field