Enhancement of the thermoelectric figure-of-merit in nanowire superlattices
Keyword(s):
ABSTRACTBased on the Kubo-Greenwood formula, the thermoelectric effects in periodically and quasiperiodically segmented nanowires are studied by means of a real-space renormalization plus convolution method, where the electrical and lattice thermal conductivities are respectively calculated by using the tight-binding and Born models; the latter includes central and non-central interactions between nearest-neighbor atoms. The results show a significant enhancement of the thermoelectric figure-of-merit (ZT) induced by the structural disorder and/or the reduction of nanowire cross-section area. In addition, we observe a maximum ZT in both the chemical-potential and temperature spaces.
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2017 ◽
Vol 31
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pp. 1750124
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pp. 1871-1880
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pp. 2050019
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pp. 2081-2086
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2007 ◽
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pp. 161-164
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2001 ◽
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pp. 837-843
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