ISSN:
1013-9826
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
High dense Bi2Te3 nanowire arrays were fabricated in porous anodic alumina (PAA) byelectrochemical deposition. A macro-integration measurement was used to study the thermoelectricproperties of a superimposed layer of Bi2Te3/PAA structure. In this macro-integration system,meaningful amounts of heat will transport along Bi2Te3 nanowire arrays, and so the measurementerrors of micro-current and micro-temperature difference of individual nanowire can be eliminated.The influences of wire diameter, area fraction of wires and interface thermal resistance in thesandwich structure on the measurement accuracy of Seebeck coefficient and electrical conductivityof Bi2Te3/Al2O3 system were discussed. The experimental electrical conductivity is close to thetheoretically calculated value. Further improvement in eliminating the interface thermal resistancewould bring more reliable result in Seebeck coefficient measurement. The macro-integrationmeasurement is a practical method to evaluate the thermoelectric properties of thermoelectricnanowire arrays
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/55/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.352.239.pdf
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