Thermoelectric performance of functionalized Sc2C MXenes

S. Kumar; Udo Schwingenschlögl

doi:10.1103/PhysRevB.94.035405

Thermoelectric performance of functionalized Sc2C MXenes

S. Kumar, Udo Schwingenschlögl

Research output: Contribution to journal › Article › peer-review

127 Scopus citations

Abstract

Functionalization of the MXene Sc2C, which has the rare property to realize semiconducting states for various functionalizations including O, F, and OH, is studied with respect to the electronic and thermal behavior. The lowest lattice thermal conductivity is obtained for OH functionalization and an additional 30% decrease can be achieved by confining the phonon mean free path to 100 nm. Despite a relatively low Seebeck coefficient, Sc2C(OH)2 is a candidate for intermediate-temperature thermoelectric applications due to compensation by a high electrical conductivity and very low lattice thermal conductivity.

Original language	English (US)
Journal	Physical Review B
Volume	94
Issue number	3
DOIs	https://doi.org/10.1103/PhysRevB.94.035405
State	Published - Jul 5 2016

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: The research reported in this publication was supported
by funding from King Abdullah University of Science and
Technology (KAUST).

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https://repository.kaust.edu.sa/bitstream/10754/617079/1/PhysRevB.94.035405.pdf

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title = "Thermoelectric performance of functionalized Sc2C MXenes",

abstract = "Functionalization of the MXene Sc2C, which has the rare property to realize semiconducting states for various functionalizations including O, F, and OH, is studied with respect to the electronic and thermal behavior. The lowest lattice thermal conductivity is obtained for OH functionalization and an additional 30% decrease can be achieved by confining the phonon mean free path to 100 nm. Despite a relatively low Seebeck coefficient, Sc2C(OH)2 is a candidate for intermediate-temperature thermoelectric applications due to compensation by a high electrical conductivity and very low lattice thermal conductivity.",

author = "S. Kumar and Udo Schwingenschl{\"o}gl",

note = "KAUST Repository Item: Exported on 2020-10-01 Acknowledgements: The research reported in this publication was supported by funding from King Abdullah University of Science and Technology (KAUST).",

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AU - Schwingenschlögl, Udo

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N2 - Functionalization of the MXene Sc2C, which has the rare property to realize semiconducting states for various functionalizations including O, F, and OH, is studied with respect to the electronic and thermal behavior. The lowest lattice thermal conductivity is obtained for OH functionalization and an additional 30% decrease can be achieved by confining the phonon mean free path to 100 nm. Despite a relatively low Seebeck coefficient, Sc2C(OH)2 is a candidate for intermediate-temperature thermoelectric applications due to compensation by a high electrical conductivity and very low lattice thermal conductivity.

AB - Functionalization of the MXene Sc2C, which has the rare property to realize semiconducting states for various functionalizations including O, F, and OH, is studied with respect to the electronic and thermal behavior. The lowest lattice thermal conductivity is obtained for OH functionalization and an additional 30% decrease can be achieved by confining the phonon mean free path to 100 nm. Despite a relatively low Seebeck coefficient, Sc2C(OH)2 is a candidate for intermediate-temperature thermoelectric applications due to compensation by a high electrical conductivity and very low lattice thermal conductivity.

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ER -

Thermoelectric performance of functionalized Sc2C MXenes

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