Surface enhanced resonant Raman scattering in hybrid MoSe2@Au nanostructures

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dc.citation.firstpage29411
dc.citation.issueNumber22
dc.citation.journalTitleOptics Express
dc.citation.lastpage29423
dc.citation.volumeNumber26
dc.contributor.authorAbid, Inès
dc.contributor.authorChen, Weibing
dc.contributor.authorYuan, Jiangtan
dc.contributor.authorNajmaei, Sina
dc.contributor.authorPeñafiel, Emil C.
dc.contributor.authorPéchou, Renaud
dc.contributor.authorLarge, Nicolas
dc.contributor.authorLou, Jun
dc.contributor.authorMlayah, Adnen
dc.date.accessioned2018-12-20T18:56:37Z
dc.date.available2018-12-20T18:56:37Z
dc.date.issued2018
dc.description.abstractWe report on the surface enhanced resonant Raman scattering (SERRS) in hybrid MoSe2@Au plasmonic-excitonic nanostructures, focusing on the situation where the localized surface plasmon resonance of Au nanodisks is finely tuned to the exciton absorption of monolayer MoSe2. Using a resonant excitation, we investigate the SERRS in MoSe2@Au and the resonant Raman scattering (RRS) in a MoSe2@SiO2 reference. Both optical responses are compared to the non-resonant Raman scattering signal, thus providing an estimate of the relative contributions from the localized surface plasmons and the confined excitons to the Raman scattering enhancement. We determine a SERRS/RRS enhancement factor exceeding one order of magnitude. Furthermore, using numerical simulations, we explore the optical near-field properties of the hybrid MoSe2@Au nanostructure and investigate the SERRS efficiency dependence on the nanodisk surface morphology and on the excitation wavelength. We demonstrate that a photothermal effect, due to the resonant plasmonic pumping of electron-hole pairs into the MoSe2 layer, and the surface roughness of the metallic nanostructures are the main limiting factors of the SERRS efficiency.
dc.identifier.citationAbid, Inès, Chen, Weibing, Yuan, Jiangtan, et al.. "Surface enhanced resonant Raman scattering in hybrid MoSe2@Au nanostructures." <i>Optics Express,</i> 26, no. 22 (2018) Optical Society of America: 29411-29423. https://doi.org/10.1364/OE.26.029411.
dc.identifier.digitaloe-26-22-29411
dc.identifier.doihttps://doi.org/10.1364/OE.26.029411
dc.identifier.urihttps://hdl.handle.net/1911/104925
dc.language.isoeng
dc.publisherOptical Society of America
dc.rightsAn OSA-formatted open access journal article PDF may be governed by the OSA Open Access Publishing Agreement signed by the author and any applicable copyright laws. Authors and readers may use, reuse, and build upon the article, or use it for text or data mining without asking prior permission from the publisher or the Author(s), as long as the purpose is non-commercial and appropriate attribution is maintained.
dc.rights.urihttps://www.osapublishing.org/library/license_v1.cfm#VOR-OA
dc.titleSurface enhanced resonant Raman scattering in hybrid MoSe2@Au nanostructures
dc.typeJournal article
dc.type.dcmiText
dc.type.publicationpublisher version
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