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Relevance of Rabi splitting effect for tunable enhancement of Raman scattering in self-assembled silver - Fullerene nanocomposite films
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SYSNO ASEP 0558933 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Relevance of Rabi splitting effect for tunable enhancement of Raman scattering in self-assembled silver - Fullerene nanocomposite films Author(s) Lavrentiev, Vasyl (UJF-V) RID, ORCID, SAI
Pokorný, Jan (FZU-D) RID, ORCID
Chvostová, Dagmar (FZU-D) RID, SAI, ORCID
Klementová, Mariana (FZU-D) RID, ORCID
Lavrentieva, Inna (UJF-V) ORCID
Vacík, Jiří (UJF-V) RID, ORCID, SAI
Dejneka, Alexandr (FZU-D) RID, ORCIDNumber of authors 7 Source Title Carbon. - : Elsevier - ISSN 0008-6223
Roč. 196, AUG (2022), s. 988-1000Number of pages 13 s. Publication form Print - P Language eng - English Country GB - United Kingdom Keywords Fullerene molecules ; silver nanoparticles ; Self-assembly ; Raman scattering enhancement ; Plasmonic interactions OECD category Coating and films Subject RIV - cooperation Institute of Physics - Solid Matter Physics ; Magnetism R&D Projects EF16_019/0000760 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) GA22-17346S GA ČR - Czech Science Foundation (CSF) Research Infrastructure CANAM II - 90056 - Ústav jaderné fyziky AV ČR, v. v. i.
CzechNanoLab - 90110 - Vysoké učení technické v BrněMethod of publishing Limited access Institutional support FZU-D - RVO:68378271 ; UJF-V - RVO:61389005 UT WOS 000816149500004 EID SCOPUS 85132423818 DOI 10.1016/j.carbon.2022.06.002 Annotation We report on detection of plasmon-enhanced Raman scattering (PERS) in self-assembled AgxC60 nanocomposite films and on evolution of this effect with increase of the Ag concentration, x, in the interval of 2 < x < 25. Optical absorption spectra show that origin of the PERS effect is closely related with dipolar plasmonic mode generated by uniform 3D-ensemble of Ag nanoparticles, which arise in the C-60-based matrix during the film deposition. Careful analysis of the absorption spectra designates features of strong coupling between dipolar plasmon mode and the C-60 low-energy exciton suggesting energy exchange between the arisen high- and low-energy polaritonic states. Evaluation of dispersion spectra of the polaritons revealed anti-crossing effect as a sign of the strong plasmon-exciton coupling with Rabi splitting energy of about 300 meV. In frames of the recently-reported quantum-electrodynamics model, the detected PERS effect was ascribed to abundant population of the low- energy polaritonic states caused by asymmetric transitions between the low- and high-energy polaritons. The obtained PERS-spectra display sensitivity of the C-60 vibrational modes to the x-driven plasmonic field strength, which demonstrates some reduction at higher x due to charge transfer through C-60 molecular junctions. The evident tunability of PERS suggests an emerging potential of the self-assembled AgxC60 films for their application in molecular electronics and molecular photochemistry. Workplace Nuclear Physics Institute Contact Markéta Sommerová, sommerova@ujf.cas.cz, Tel.: 266 173 228 Year of Publishing 2023 Electronic address https://doi.org/10.1016/j.carbon.2022.06.002
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