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HomeMaterials Science ForumMaterials Science Forum Vol. 847Band Structures and Transport Properties of...

Band Structures and Transport Properties of Half-Heusler Compounds NbMSb (M = Fe, Ru)

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Abstract:

The band structures and transport properties of Half-Heusler compounds NbFeSb and NbRuSb were studied using ab initio calculations and the Boltzmann transport equation with constant scattering time approximation (CSTA). Both compounds were identified as good p-type thermoelectric materials because of the combination of heavy and light bands in the valence band maximum (VBM). The Seebeck coefficients for NbRuSb were lower than that for NbFeSb; while the electrical conductivities for NbRuSb were little higher than that for NbFeSb. Consequently, the power factors in the p-type regimes for both compounds were similar at a given temperature. NbFeSb and NbRuSb could be efficient materials for thermoelectric generators based on the results in the present investigation.

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Periodical:

Materials Science Forum (Volume 847)

Pages:

171-176

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.847.171

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Online since:

March 2016

Authors:

Teng Fang, Shu Qi Zheng, Hong Chen, Peng Zhang

Keywords:

Half-Heusler Compounds, Thermoelectric, Transport Property

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© 2016 Trans Tech Publications Ltd. All Rights Reserved

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