Enhancement of thermoelectric figure of merit by using nonequilibrium state between electrons and phonons

Enhancement of thermoelectric figure of merit by using nonequilibrium state between electrons and phonons

We investigated the thermoelectric properties of a metal/semiconductor multilayer by using a simple parabolic band model and two-temperature model. The multilayer enables not only reducing thermal conductivity but also enhancing the power factor by using a nonequilibrium state between electrons and...

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Veröffentlicht in:Applied physics letters 2020-08, Vol.117 (8)
Hauptverfasser: Yabuuchi, Shin, Kurosaki, Yosuke, Fukatani, Naoto, Hayakawa, Jun
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Sprache:eng
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Applied physics
Electrons
Figure of merit
Heat conductivity
Heat transfer
Multilayers
Phonons
Power factor
Thermal conductivity
Thermoelectricity
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container_title Applied physics letters
container_volume 117
creator Yabuuchi, Shin
Kurosaki, Yosuke
Fukatani, Naoto
Hayakawa, Jun
description We investigated the thermoelectric properties of a metal/semiconductor multilayer by using a simple parabolic band model and two-temperature model. The multilayer enables not only reducing thermal conductivity but also enhancing the power factor by using a nonequilibrium state between electrons and phonons created by the interface. Our results revealed that combining a metal with low lattice thermal conductivity and a semiconductor with high lattice thermal conductivity can compensate for their weak points each other in the thermoelectric properties, resulting in the remarkable enhancement of the figure of merit.
doi_str_mv 10.1063/5.0003661
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source AIP Journals Complete; Alma/SFX Local Collection
subjects Applied physics
Electrons
Figure of merit
Heat conductivity
Heat transfer
Multilayers
Phonons
Power factor
Thermal conductivity
Thermoelectricity
title Enhancement of thermoelectric figure of merit by using nonequilibrium state between electrons and phonons
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