Record low thermal conductivity of polycrystalline MoS2 films

We report a record low thermal conductivity in polycrystalline MoS obtained for ultrathin films with varying grain sizes and orientations. By optimizing the sulfurization parameters of nanometer-thick Mo layers, five MoS films containing a combination of horizontally and vertically oriented grains,...

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Autores: Sledzinska, Marianna|||0000-0001-8592-1121, Quey, Romain|||0000-0002-1593-8179, Mortazavi, Bohayra|||0000-0003-3031-5057, Graczykowski, Bartlomiej|||0000-0003-4787-8622, Placidi, M., Saleta Reig, David|||0000-0003-3189-2331, Navarro Urrios, Daniel|||0000-0001-9055-1583, Alzina, Francesc|||0000-0002-7082-0624, Colombo, Luciano|||0000-0001-5335-4652, Roche, Stephan|||0000-0003-0323-4665, Sotomayor Torres, Clivia M.|||0000-0001-9986-2716
Formato: artículo
Fecha de publicación:2017
País:España
Recursos:Universitat Autònoma de Barcelona
Repositorio:Dipòsit Digital de Documents de la UAB
Idioma:inglés
OAI Identifier:oai:ddd.uab.cat:211654
Acesso em linha:https://ddd.uab.cat/record/211654
https://dx.doi.org/urn:doi:10.1021/acsami.7b08811
Access Level:acceso abierto
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spelling Record low thermal conductivity of polycrystalline MoS2 filmstuning the thermal conductivity by grain orientationSledzinska, Marianna|||0000-0001-8592-1121Quey, Romain|||0000-0002-1593-8179Mortazavi, Bohayra|||0000-0003-3031-5057Graczykowski, Bartlomiej|||0000-0003-4787-8622Placidi, M.Saleta Reig, David|||0000-0003-3189-2331Navarro Urrios, Daniel|||0000-0001-9055-1583Alzina, Francesc|||0000-0002-7082-0624Colombo, Luciano|||0000-0001-5335-4652Roche, Stephan|||0000-0003-0323-4665Sotomayor Torres, Clivia M.|||0000-0001-9986-2716We report a record low thermal conductivity in polycrystalline MoS obtained for ultrathin films with varying grain sizes and orientations. By optimizing the sulfurization parameters of nanometer-thick Mo layers, five MoS films containing a combination of horizontally and vertically oriented grains, with respect to the bulk (001) monocrystal, were grown. From transmission electron microscopy, the average grain size, typically below 10 nm, and proportion of differently oriented grains were extracted. The thermal conductivity of the suspended samples was extracted from a Raman laser-power-dependent study, and the lowest value of thermal conductivity of 0.27 W m K, which reaches a similar value as that of Teflon, is obtained in a polycrystalline sample formed by a combination of horizontally and vertically oriented grains in similar proportion. Analysis by means of molecular dynamics and finite element method simulations confirm that such a grain arrangement leads to lower grain boundary conductance. We discuss the possible use of these thermal insulating films in the context of electronics and thermoelectricity. 22017-01-0120172017-01-01Articlehttp://purl.org/coar/resource_type/c_6501SMURhttp://purl.org/coar/version/c_71e4c1898caa6e32info:eu-repo/semantics/articleapplication/pdfhttps://ddd.uab.cat/record/211654https://dx.doi.org/urn:doi:10.1021/acsami.7b08811reponame:Dipòsit Digital de Documents de la UABinstname:Universitat Autònoma de BarcelonaInglésengEuropean Commission https://doi.org/10.13039/501100000780 604668European Commission https://doi.org/10.13039/501100000780 615132Ministerio de Economía y Competitividad https://doi.org/10.13039/501100003329 FIS2015-70862-PMinisterio de Economía y Competitividad https://doi.org/10.13039/501100003329 SEV-2013-0295European Commission https://doi.org/10.13039/501100000780 696656Ministerio de Economía y Competitividad https://doi.org/10.13039/501100003329 FIS2015-67767-PMinisterio de Economía y Competitividad https://doi.org/10.13039/501100003329 RYC-2014-15392open accesshttp://purl.org/coar/access_right/c_abf2Aquest material està protegit per drets d'autor i/o drets afins. Podeu utilitzar aquest material en funció del que permet la legislació de drets d'autor i drets afins d'aplicació al vostre cas. Per a d'altres usos heu d'obtenir permís del(s) titular(s) de drets.https://rightsstatements.org/vocab/InC/1.0/info:eu-repo/semantics/openAccessoai:ddd.uab.cat:2116542026-06-06T12:50:31Z
dc.title.none.fl_str_mv Record low thermal conductivity of polycrystalline MoS2 films
tuning the thermal conductivity by grain orientation
title Record low thermal conductivity of polycrystalline MoS2 films
spellingShingle Record low thermal conductivity of polycrystalline MoS2 films
Sledzinska, Marianna|||0000-0001-8592-1121
title_short Record low thermal conductivity of polycrystalline MoS2 films
title_full Record low thermal conductivity of polycrystalline MoS2 films
title_fullStr Record low thermal conductivity of polycrystalline MoS2 films
title_full_unstemmed Record low thermal conductivity of polycrystalline MoS2 films
title_sort Record low thermal conductivity of polycrystalline MoS2 films
dc.creator.none.fl_str_mv Sledzinska, Marianna|||0000-0001-8592-1121
Quey, Romain|||0000-0002-1593-8179
Mortazavi, Bohayra|||0000-0003-3031-5057
Graczykowski, Bartlomiej|||0000-0003-4787-8622
Placidi, M.
Saleta Reig, David|||0000-0003-3189-2331
Navarro Urrios, Daniel|||0000-0001-9055-1583
Alzina, Francesc|||0000-0002-7082-0624
Colombo, Luciano|||0000-0001-5335-4652
Roche, Stephan|||0000-0003-0323-4665
Sotomayor Torres, Clivia M.|||0000-0001-9986-2716
author Sledzinska, Marianna|||0000-0001-8592-1121
author_facet Sledzinska, Marianna|||0000-0001-8592-1121
Quey, Romain|||0000-0002-1593-8179
Mortazavi, Bohayra|||0000-0003-3031-5057
Graczykowski, Bartlomiej|||0000-0003-4787-8622
Placidi, M.
Saleta Reig, David|||0000-0003-3189-2331
Navarro Urrios, Daniel|||0000-0001-9055-1583
Alzina, Francesc|||0000-0002-7082-0624
Colombo, Luciano|||0000-0001-5335-4652
Roche, Stephan|||0000-0003-0323-4665
Sotomayor Torres, Clivia M.|||0000-0001-9986-2716
author_role author
author2 Quey, Romain|||0000-0002-1593-8179
Mortazavi, Bohayra|||0000-0003-3031-5057
Graczykowski, Bartlomiej|||0000-0003-4787-8622
Placidi, M.
Saleta Reig, David|||0000-0003-3189-2331
Navarro Urrios, Daniel|||0000-0001-9055-1583
Alzina, Francesc|||0000-0002-7082-0624
Colombo, Luciano|||0000-0001-5335-4652
Roche, Stephan|||0000-0003-0323-4665
Sotomayor Torres, Clivia M.|||0000-0001-9986-2716
author2_role author
author
author
author
author
author
author
author
author
author
description We report a record low thermal conductivity in polycrystalline MoS obtained for ultrathin films with varying grain sizes and orientations. By optimizing the sulfurization parameters of nanometer-thick Mo layers, five MoS films containing a combination of horizontally and vertically oriented grains, with respect to the bulk (001) monocrystal, were grown. From transmission electron microscopy, the average grain size, typically below 10 nm, and proportion of differently oriented grains were extracted. The thermal conductivity of the suspended samples was extracted from a Raman laser-power-dependent study, and the lowest value of thermal conductivity of 0.27 W m K, which reaches a similar value as that of Teflon, is obtained in a polycrystalline sample formed by a combination of horizontally and vertically oriented grains in similar proportion. Analysis by means of molecular dynamics and finite element method simulations confirm that such a grain arrangement leads to lower grain boundary conductance. We discuss the possible use of these thermal insulating films in the context of electronics and thermoelectricity.
publishDate 2017
dc.date.none.fl_str_mv 2
2017-01-01
2017
2017-01-01
dc.type.none.fl_str_mv Article
http://purl.org/coar/resource_type/c_6501
SMUR
http://purl.org/coar/version/c_71e4c1898caa6e32
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://ddd.uab.cat/record/211654
https://dx.doi.org/urn:doi:10.1021/acsami.7b08811
url https://ddd.uab.cat/record/211654
https://dx.doi.org/urn:doi:10.1021/acsami.7b08811
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.relation.none.fl_str_mv European Commission https://doi.org/10.13039/501100000780 604668
European Commission https://doi.org/10.13039/501100000780 615132
Ministerio de Economía y Competitividad https://doi.org/10.13039/501100003329 FIS2015-70862-P
Ministerio de Economía y Competitividad https://doi.org/10.13039/501100003329 SEV-2013-0295
European Commission https://doi.org/10.13039/501100000780 696656
Ministerio de Economía y Competitividad https://doi.org/10.13039/501100003329 FIS2015-67767-P
Ministerio de Economía y Competitividad https://doi.org/10.13039/501100003329 RYC-2014-15392
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
https://rightsstatements.org/vocab/InC/1.0/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
https://rightsstatements.org/vocab/InC/1.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:Dipòsit Digital de Documents de la UAB
instname:Universitat Autònoma de Barcelona
instname_str Universitat Autònoma de Barcelona
reponame_str Dipòsit Digital de Documents de la UAB
collection Dipòsit Digital de Documents de la UAB
repository.name.fl_str_mv
repository.mail.fl_str_mv
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