Journal
MEASUREMENT SCIENCE AND TECHNOLOGY
Volume 25, Issue 8, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/0957-0233/25/8/085009
Keywords
thermoelectric measurement; thermoelectric figure-of-merit; thermoelectric materials
Funding
- ThermoMag Project - European Commission in the 7th Framework Programme [NMP4-SL-2011-263207]
- European Space Agency
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This paper describes a measurement principle of determining thermoelectric properties based on obtaining current-voltage (I-V) curves under two different operating conditions: (1) constant temperature difference and (2) constant thermal input flux. In addition to thermoelectric figure-of-merit, other thermoelectric properties including the Seebeck coefficient, electrical resistivity and thermal conductivity can also be derived from I-V measurements. An advantage of this technique is its ability to detect the influence of the Thomson effect and to characterize the segmented thermoelectric structures due to the fact that a measurement can be taken under a large temperature difference in a closed circuit condition. Furthermore, it has a potential to achieve high measurement accuracy because the error due to the contact resistance is eliminated.
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