Anisotropic Thermal Conductivity of Crystalline Layered SnSe2

The degree of thermal anisotropy affects critically key device-relevant properties of layered two-dimensional materials. Here, we systematically study the in-plane and cross-plane thermal conductivity of crystalline SnSe2 films of varying thickness (16-190 nm) and uncover a thickness-independent the...

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Autores: Xiao, Peng, Chávez-Angel, Emigdio, Chaitoglou, Stefanos, Sledzinska, Marianna, Dimoulas, Athanasios, Sotomayor Torres, C. M., Schat, Alexandros El
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2021
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/264111
Acceso en línea:http://hdl.handle.net/10261/264111
Access Level:acceso abierto
Palabra clave:Phonon transport
Mean free path
SnSe2
Thermal conductivity anisotropy
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spelling Anisotropic Thermal Conductivity of Crystalline Layered SnSe2Xiao, PengChávez-Angel, Emigdio Chaitoglou, StefanosSledzinska, MariannaDimoulas, AthanasiosSotomayor Torres, C. M. Schat, Alexandros ElPhonon transportMean free pathSnSe2Thermal conductivity anisotropyThe degree of thermal anisotropy affects critically key device-relevant properties of layered two-dimensional materials. Here, we systematically study the in-plane and cross-plane thermal conductivity of crystalline SnSe2 films of varying thickness (16-190 nm) and uncover a thickness-independent thermal conductivity anisotropy ratio of about ∼8.4. Experimental data obtained using Raman thermometry and frequency domain thermoreflectance showed that the in-plane and cross-plane thermal conductivities monotonically decrease by a factor of 2.5 with decreasing film thickness compared to the bulk values. Moreover, we find that the temperature-dependence of the in-plane component gradually decreases as the film becomes thinner, and in the range from 300 to 473 K it drops by more than a factor of 2. Using the mean free path reconstruction method, we found that phonons with MFP ranging from ∼1 to 53 and from 1 to 30 nm contribute to 50% of the total in-plane and cross-plane thermal conductivity, respectively.This work has been supported by the Severo Ochoa program, the Spanish Research Agency (AEI, Grant SEV-2017-0706), and the CERCA Programme/Generalitat de Catalunya. The authors acknowledge support from Spanish MICINN Project SIP (Grant PGC2018-101743-B-I00) and the EU Project NANOPOLY (Grant GA 289061). S.C. and A.D. acknowledge financial support from the Flag-Era JTC 2017 Project MELODICA. P.X. acknowledges support by a Ph.D. fellowship from the EU Marie Skłodowska-Curie COFUND PREBIST (Grant Agreement 754558).American Chemical SocietyGeneralitat de CatalunyaMinisterio de Ciencia, Innovación y Universidades (España)Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]2022202220212022info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionhttp://hdl.handle.net/10261/264111reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PGC2018-101743-B-I00http://doi.org/10.1021/acs.nanolett.1c03018Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/2641112026-05-22T06:33:51Z
dc.title.none.fl_str_mv Anisotropic Thermal Conductivity of Crystalline Layered SnSe2
title Anisotropic Thermal Conductivity of Crystalline Layered SnSe2
spellingShingle Anisotropic Thermal Conductivity of Crystalline Layered SnSe2
Xiao, Peng
Phonon transport
Mean free path
SnSe2
Thermal conductivity anisotropy
title_short Anisotropic Thermal Conductivity of Crystalline Layered SnSe2
title_full Anisotropic Thermal Conductivity of Crystalline Layered SnSe2
title_fullStr Anisotropic Thermal Conductivity of Crystalline Layered SnSe2
title_full_unstemmed Anisotropic Thermal Conductivity of Crystalline Layered SnSe2
title_sort Anisotropic Thermal Conductivity of Crystalline Layered SnSe2
dc.creator.none.fl_str_mv Xiao, Peng
Chávez-Angel, Emigdio
Chaitoglou, Stefanos
Sledzinska, Marianna
Dimoulas, Athanasios
Sotomayor Torres, C. M.
Schat, Alexandros El
author Xiao, Peng
author_facet Xiao, Peng
Chávez-Angel, Emigdio
Chaitoglou, Stefanos
Sledzinska, Marianna
Dimoulas, Athanasios
Sotomayor Torres, C. M.
Schat, Alexandros El
author_role author
author2 Chávez-Angel, Emigdio
Chaitoglou, Stefanos
Sledzinska, Marianna
Dimoulas, Athanasios
Sotomayor Torres, C. M.
Schat, Alexandros El
author2_role author
author
author
author
author
author
dc.contributor.none.fl_str_mv Generalitat de Catalunya
Ministerio de Ciencia, Innovación y Universidades (España)
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Phonon transport
Mean free path
SnSe2
Thermal conductivity anisotropy
topic Phonon transport
Mean free path
SnSe2
Thermal conductivity anisotropy
description The degree of thermal anisotropy affects critically key device-relevant properties of layered two-dimensional materials. Here, we systematically study the in-plane and cross-plane thermal conductivity of crystalline SnSe2 films of varying thickness (16-190 nm) and uncover a thickness-independent thermal conductivity anisotropy ratio of about ∼8.4. Experimental data obtained using Raman thermometry and frequency domain thermoreflectance showed that the in-plane and cross-plane thermal conductivities monotonically decrease by a factor of 2.5 with decreasing film thickness compared to the bulk values. Moreover, we find that the temperature-dependence of the in-plane component gradually decreases as the film becomes thinner, and in the range from 300 to 473 K it drops by more than a factor of 2. Using the mean free path reconstruction method, we found that phonons with MFP ranging from ∼1 to 53 and from 1 to 30 nm contribute to 50% of the total in-plane and cross-plane thermal conductivity, respectively.
publishDate 2021
dc.date.none.fl_str_mv 2021
2022
2022
2022
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Publisher's version
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/264111
url http://hdl.handle.net/10261/264111
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv #PLACEHOLDER_PARENT_METADATA_VALUE#
info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PGC2018-101743-B-I00
http://doi.org/10.1021/acs.nanolett.1c03018
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv American Chemical Society
publisher.none.fl_str_mv American Chemical Society
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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