Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
Optical Response of CVD-Grown ML-WS2 Flakes on an Ultra-Dense Au NP Plasmonic Array. / Ferrera, M. ; Ramò, L. ; Convertino, D. и др.
в: Chemosensors, Том 10, № 3, 120, 01.03.2022.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Optical Response of CVD-Grown ML-WS2 Flakes on an Ultra-Dense Au NP Plasmonic Array
AU - Ferrera, M.
AU - Ramò, L.
AU - Convertino, D.
AU - Orlandini, G.
AU - Pace, S.
AU - Milekhin, Ilya
AU - Magnozzi, M.
AU - Rahaman, Mahfujur
AU - Zahn, Dietrich R.T.
AU - Coletti, C.
AU - Canepa, Maurizio
AU - Bisio, F.
N1 - Funding: The research leading to these results has received funding from Compagnia di San Paolo (project STRATOS) and Ministero dell’Istruzione, dell’Università e della Ricerca: PRIN 2017 grant number 2017KFY7XF and Dipartimenti di Eccellenza 2018–2022. We acknowledge support from DAAD (German Academic Exchange Service) Research Grants—Short-Term Grants, 2021 (57552336). This research has also received funding from the European Union’s Horizon 2020 research and innovation program under grant agreement no. 881603-GrapheneCore3. This research was also funded by Deutsche Forschungsgemeinschaft (DFG) grant numbers ZA 146/43-1, ZA 146/44-1 and FL 670/8-1.
PY - 2022/3/1
Y1 - 2022/3/1
N2 - The combination of metallic nanostructures with two-dimensional transition metal dichalcogenides is an efficient way to make the optical properties of the latter more appealing for opto-electronic applications. In this work, we investigate the optical properties of monolayer WS2 flakes grown by chemical vapour deposition and transferred onto a densely-packed array of plasmonic Au nanoparticles (NPs). The optical response was measured as a function of the thickness of a dielectric spacer intercalated between the two materials and of the system temperature, in the 75–350 K range. We show that a weak interaction is established between WS2 and Au NPs, leading to temperature-and spacer-thickness-dependent coupling between the localized surface plasmon resonance of Au NPs and the WS2 exciton. We suggest that the closely-packed morphology of the plasmonic array promotes a high confinement of the electromagnetic field in regions inaccessible by the WS2 deposited on top. This allows the achievement of direct contact between WS2 and Au while preserving a strong connotation of the properties of the two materials also in the hybrid system.
AB - The combination of metallic nanostructures with two-dimensional transition metal dichalcogenides is an efficient way to make the optical properties of the latter more appealing for opto-electronic applications. In this work, we investigate the optical properties of monolayer WS2 flakes grown by chemical vapour deposition and transferred onto a densely-packed array of plasmonic Au nanoparticles (NPs). The optical response was measured as a function of the thickness of a dielectric spacer intercalated between the two materials and of the system temperature, in the 75–350 K range. We show that a weak interaction is established between WS2 and Au NPs, leading to temperature-and spacer-thickness-dependent coupling between the localized surface plasmon resonance of Au NPs and the WS2 exciton. We suggest that the closely-packed morphology of the plasmonic array promotes a high confinement of the electromagnetic field in regions inaccessible by the WS2 deposited on top. This allows the achievement of direct contact between WS2 and Au while preserving a strong connotation of the properties of the two materials also in the hybrid system.
KW - 2D materials
KW - hybrid systems
KW - micro-optical spectroscopies
KW - plasmonics
UR - https://elibrary.ru/item.asp?id=48958044
UR - https://www.mendeley.com/catalogue/3cd2c452-c7ed-3333-8c04-34b1b5292a5e/
U2 - 10.3390/chemosensors10030120
DO - 10.3390/chemosensors10030120
M3 - Article
VL - 10
JO - Chemosensors
JF - Chemosensors
SN - 2227-9040
IS - 3
M1 - 120
ER -
ID: 43518488