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Materials 2009, 2(3), 903-910; doi:10.3390/ma2030903

Porous Thermoelectric Materials

School of Physics, University of New South Wales, Sydney, NSW 2052, Australia
Received: 20 June 2009 / Revised: 25 July 2009 / Accepted: 28 July 2009 / Published: 5 August 2009
(This article belongs to the Special Issue Porous Materials)
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Thermoelectric materials are sometimes prepared using a sintering process in which the achievement of a high density is often one of the objectives. However, it has recently been shown that the introduction of a highly porous material is desirable in synthetic transverse thermoelements. Porosity may also be an advantage in conventional longitudinal thermoelectric modules in which a high thermal flux density creates problems, but heat transfer within the pores can degrade the thermoelectric figure of merit. The amount of this degradation is calculated and it is shown that it can be small enough to be acceptable in practical devices.
Keywords: thermoelectricity; porosity; bismuth telluride thermoelectricity; porosity; bismuth telluride
This is an open access article distributed under the Creative Commons Attribution License (CC BY) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Goldsmid, H.J. Porous Thermoelectric Materials. Materials 2009, 2, 903-910.

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