Effect of crystallinity and thickness on thermal transport in layered PtSe2
We present a comparative investigation of the influence of crystallinity and film thickness on the acoustic and thermal properties of layered PtSe films of varying thickness (1-40 layers) using frequency-domain thermo-reflectance, low-frequency Raman, and pump-probe coherent phonon spectroscopy. We...
| Autores: | , , , , , , , , , , , , , |
|---|---|
| Tipo de recurso: | artículo |
| Fecha de publicación: | 2022 |
| País: | España |
| Institución: | Universitat Autònoma de Barcelona |
| Repositorio: | Dipòsit Digital de Documents de la UAB |
| Idioma: | inglés |
| OAI Identifier: | oai:ddd.uab.cat:266323 |
| Acceso en línea: | https://ddd.uab.cat/record/266323 https://dx.doi.org/urn:doi:10.1038/s41699-022-00311-x |
| Access Level: | acceso abierto |
| Palabra clave: | Cristallinity Cross planes Film-thickness Frequency domains Low-frequency Raman Pump probe Raman probe Thermal transport Thermoreflectance Varying thickness |
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Effect of crystallinity and thickness on thermal transport in layered PtSe2Sachat, Alexandros el|||0000-0003-3798-9724Xiao, Peng|||0000-0002-4711-2566Donadio, Davide|||0000-0002-2150-4182Bonell, Frédéric|||0000-0001-7296-0404Sledzinska, Marianna|||0000-0001-8592-1121Marty, Alain|||0000-0001-5709-6945Vergnaud, Céline|||0000-0003-2728-4149Boukari, HervéJamet, Matthieu|||0000-0002-8247-4677Arregui Bravo, Guillermo|||0000-0002-6458-5277Chen, ZekunAlzina, Francesc|||0000-0002-7082-0624Sotomayor Torres, Clivia M.|||0000-0001-9986-2716Chávez Ángel, Emigdio|||0000-0002-9783-0806CristallinityCross planesFilm-thicknessFrequency domainsLow-frequency RamanPump probeRaman probeThermal transportThermoreflectanceVarying thicknessWe present a comparative investigation of the influence of crystallinity and film thickness on the acoustic and thermal properties of layered PtSe films of varying thickness (1-40 layers) using frequency-domain thermo-reflectance, low-frequency Raman, and pump-probe coherent phonon spectroscopy. We find ballistic cross-plane heat transport up to ~30 layers PtSe and a 35% reduction in the cross-plane thermal conductivity of polycrystalline films with thickness larger than 20 layers compared to the crystalline films of the same thickness. First-principles calculations further reveal a high degree of thermal conductivity anisotropy and a remarkable large contribution of the optical phonons to the thermal conductivity in bulk (~20%) and thin PtSe films (~30%). Moreover, we show strong interlayer interactions in PtSe, short acoustic phonon lifetimes in the range of picoseconds, an out-of-plane elastic constant of 31.8 GPa, and a layer-dependent group velocity ranging from 1340 ms in bilayer to 1873 ms in eight layers of PtSe. The potential of tuning the lattice thermal conductivity of layered materials with the level of crystallinity and the real-time observation of coherent phonon dynamics open a new playground for research in 2D thermoelectric devices and provides guidelines for thermal management in 2D electronics. 22022-01-0120222022-01-01Articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttps://ddd.uab.cat/record/266323https://dx.doi.org/urn:doi:10.1038/s41699-022-00311-xreponame:Dipòsit Digital de Documents de la UABinstname:Universitat Autònoma de BarcelonaInglésengEuropean Commission https://doi.org/10.13039/501100000780 754558European Commission https://doi.org/10.13039/501100000780 289061Agencia Estatal de Investigación https://doi.org/10.13039/501100011033 SEV-2017-0706Agencia Estatal de Investigación https://doi.org/10.13039/501100011033 PGC2018-101743-B-I00open accesshttp://purl.org/coar/access_right/c_abf2Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.https://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessoai:ddd.uab.cat:2663232026-06-06T12:50:31Z |
| dc.title.none.fl_str_mv |
Effect of crystallinity and thickness on thermal transport in layered PtSe2 |
| title |
Effect of crystallinity and thickness on thermal transport in layered PtSe2 |
| spellingShingle |
Effect of crystallinity and thickness on thermal transport in layered PtSe2 Sachat, Alexandros el|||0000-0003-3798-9724 Cristallinity Cross planes Film-thickness Frequency domains Low-frequency Raman Pump probe Raman probe Thermal transport Thermoreflectance Varying thickness |
| title_short |
Effect of crystallinity and thickness on thermal transport in layered PtSe2 |
| title_full |
Effect of crystallinity and thickness on thermal transport in layered PtSe2 |
| title_fullStr |
Effect of crystallinity and thickness on thermal transport in layered PtSe2 |
| title_full_unstemmed |
Effect of crystallinity and thickness on thermal transport in layered PtSe2 |
| title_sort |
Effect of crystallinity and thickness on thermal transport in layered PtSe2 |
| dc.creator.none.fl_str_mv |
Sachat, Alexandros el|||0000-0003-3798-9724 Xiao, Peng|||0000-0002-4711-2566 Donadio, Davide|||0000-0002-2150-4182 Bonell, Frédéric|||0000-0001-7296-0404 Sledzinska, Marianna|||0000-0001-8592-1121 Marty, Alain|||0000-0001-5709-6945 Vergnaud, Céline|||0000-0003-2728-4149 Boukari, Hervé Jamet, Matthieu|||0000-0002-8247-4677 Arregui Bravo, Guillermo|||0000-0002-6458-5277 Chen, Zekun Alzina, Francesc|||0000-0002-7082-0624 Sotomayor Torres, Clivia M.|||0000-0001-9986-2716 Chávez Ángel, Emigdio|||0000-0002-9783-0806 |
| author |
Sachat, Alexandros el|||0000-0003-3798-9724 |
| author_facet |
Sachat, Alexandros el|||0000-0003-3798-9724 Xiao, Peng|||0000-0002-4711-2566 Donadio, Davide|||0000-0002-2150-4182 Bonell, Frédéric|||0000-0001-7296-0404 Sledzinska, Marianna|||0000-0001-8592-1121 Marty, Alain|||0000-0001-5709-6945 Vergnaud, Céline|||0000-0003-2728-4149 Boukari, Hervé Jamet, Matthieu|||0000-0002-8247-4677 Arregui Bravo, Guillermo|||0000-0002-6458-5277 Chen, Zekun Alzina, Francesc|||0000-0002-7082-0624 Sotomayor Torres, Clivia M.|||0000-0001-9986-2716 Chávez Ángel, Emigdio|||0000-0002-9783-0806 |
| author_role |
author |
| author2 |
Xiao, Peng|||0000-0002-4711-2566 Donadio, Davide|||0000-0002-2150-4182 Bonell, Frédéric|||0000-0001-7296-0404 Sledzinska, Marianna|||0000-0001-8592-1121 Marty, Alain|||0000-0001-5709-6945 Vergnaud, Céline|||0000-0003-2728-4149 Boukari, Hervé Jamet, Matthieu|||0000-0002-8247-4677 Arregui Bravo, Guillermo|||0000-0002-6458-5277 Chen, Zekun Alzina, Francesc|||0000-0002-7082-0624 Sotomayor Torres, Clivia M.|||0000-0001-9986-2716 Chávez Ángel, Emigdio|||0000-0002-9783-0806 |
| author2_role |
author author author author author author author author author author author author author |
| dc.subject.none.fl_str_mv |
Cristallinity Cross planes Film-thickness Frequency domains Low-frequency Raman Pump probe Raman probe Thermal transport Thermoreflectance Varying thickness |
| topic |
Cristallinity Cross planes Film-thickness Frequency domains Low-frequency Raman Pump probe Raman probe Thermal transport Thermoreflectance Varying thickness |
| description |
We present a comparative investigation of the influence of crystallinity and film thickness on the acoustic and thermal properties of layered PtSe films of varying thickness (1-40 layers) using frequency-domain thermo-reflectance, low-frequency Raman, and pump-probe coherent phonon spectroscopy. We find ballistic cross-plane heat transport up to ~30 layers PtSe and a 35% reduction in the cross-plane thermal conductivity of polycrystalline films with thickness larger than 20 layers compared to the crystalline films of the same thickness. First-principles calculations further reveal a high degree of thermal conductivity anisotropy and a remarkable large contribution of the optical phonons to the thermal conductivity in bulk (~20%) and thin PtSe films (~30%). Moreover, we show strong interlayer interactions in PtSe, short acoustic phonon lifetimes in the range of picoseconds, an out-of-plane elastic constant of 31.8 GPa, and a layer-dependent group velocity ranging from 1340 ms in bilayer to 1873 ms in eight layers of PtSe. The potential of tuning the lattice thermal conductivity of layered materials with the level of crystallinity and the real-time observation of coherent phonon dynamics open a new playground for research in 2D thermoelectric devices and provides guidelines for thermal management in 2D electronics. |
| publishDate |
2022 |
| dc.date.none.fl_str_mv |
2 2022-01-01 2022 2022-01-01 |
| dc.type.none.fl_str_mv |
Article http://purl.org/coar/resource_type/c_6501 VoR http://purl.org/coar/version/c_970fb48d4fbd8a85 |
| dc.type.openaire.fl_str_mv |
info:eu-repo/semantics/article |
| format |
article |
| dc.identifier.none.fl_str_mv |
https://ddd.uab.cat/record/266323 https://dx.doi.org/urn:doi:10.1038/s41699-022-00311-x |
| url |
https://ddd.uab.cat/record/266323 https://dx.doi.org/urn:doi:10.1038/s41699-022-00311-x |
| 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 754558 European Commission https://doi.org/10.13039/501100000780 289061 Agencia Estatal de Investigación https://doi.org/10.13039/501100011033 SEV-2017-0706 Agencia Estatal de Investigación https://doi.org/10.13039/501100011033 PGC2018-101743-B-I00 |
| dc.rights.none.fl_str_mv |
open access http://purl.org/coar/access_right/c_abf2 https://creativecommons.org/licenses/by/4.0/ |
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info:eu-repo/semantics/openAccess |
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open access http://purl.org/coar/access_right/c_abf2 https://creativecommons.org/licenses/by/4.0/ |
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openAccess |
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application/pdf |
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