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Photothermal effects and heat conduction in nanogranular silicon films

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dc.contributor.authorKurbanova, B. A.
dc.contributor.authorUtegulov, Z. N.
dc.contributor.authorMussabek, G. K.
dc.contributor.authorTimoshenko, V. Y.
dc.contributor.authorLysenko, V.
dc.contributor.authorТимошенко, Виктор Юрьевич
dc.date.accessioned2024-11-29T20:21:28Z
dc.date.available2024-11-29T20:21:28Z
dc.date.issued2021
dc.description.abstract© 2021 by the authors. Licensee MDPI, Basel, Switzerland.We present results on the photothermal (PT) and heat conductive properties of nanogranu-lar silicon (Si) films synthesized by evaporation of colloidal droplets (drop-casting) of 100 ± 50 nm-sized crystalline Si nanoparticles (NP) deposited on glass substrates. Simulations of the absorbed light intensity and photo-induced temperature distribution across the Si NP films were carried out by using the Finite difference time domain (FDTD) and finite element mesh (FEM) modeling and the obtained data were compared with the local temperatures measured by micro-Raman spectroscopy and then was used for determining the heat conductivities k in the films of various thicknesses. The cubic-to-hexagonal phase transition in Si NP films caused by laser-induced heating was found to be heavily influenced by the film thickness and heat-conductive properties of glass substrate, on which the films were deposited. The k values in drop-casted Si nanogranular films were found to be in the range of lowest k of other types of nanostructurely voided Si films due to enhanced phonon scattering across inherently voided topology, weak NP-NP and NP-substrate interface bonding within nanogranular Si films.
dc.identifier.citationPhotothermal effects and heat conduction in nanogranular silicon films / Kurbanova, B.A. [et al.] // Nanomaterials. - 2021. - 11. - № 9. - 10.3390/nano11092379
dc.identifier.doi10.3390/nano11092379
dc.identifier.urihttps://www.doi.org/10.3390/nano11092379
dc.identifier.urihttps://www.scopus.com/record/display.uri?eid=2-s2.0-85114723855&origin=resultslist
dc.identifier.urihttp://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000701450400001
dc.identifier.urihttps://openrepository.mephi.ru/handle/123456789/24687
dc.relation.ispartofNanomaterials
dc.titlePhotothermal effects and heat conduction in nanogranular silicon films
dc.typeArticle
dspace.entity.typePublication
oaire.citation.issue9
oaire.citation.volume11
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