Thermoelectric Properties of Undoped CoSb3

Abstract:

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CoSb3 compounds were prepared by the arc melting and their thermoelectric properties were investigated at 300K-600K. Annealing effects were examined and they were correlated to phase transformation and homogenization. Undoped CoSb3 showed p-type conduction and intrinsic semiconducting behavior at all temperatures examined. Thermoelectric properties were changed with constituent phases because α-CoSb2, β-CoSb and Sb are metallic or semimetallic phases while δ-CoSb3 is semiconducting phase. Thermoelectric properties were remarkably improved by annealing in vacuum and they were closely related to phase transitions. Single phase δ-CoSb3 was successfully obtained by annealing at 400°C for 24hrs.

Info:

Periodical:

Materials Science Forum (Volumes 449-452)

Edited by:

S.-G. Kang and T. Kobayashi

Pages:

917-920

DOI:

10.4028/www.scientific.net/MSF.449-452.917

Citation:

I. H. Kim et al., "Thermoelectric Properties of Undoped CoSb3", Materials Science Forum, Vols. 449-452, pp. 917-920, 2004

Online since:

March 2004

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Price:

$35.00

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