Academic Journal
Optical Response of CVD-Grown ML-WS2 Flakes on an Ultra-Dense Au NP Plasmonic Array
| العنوان: | Optical Response of CVD-Grown ML-WS2 Flakes on an Ultra-Dense Au NP Plasmonic Array |
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| المؤلفون: | Ferrera, Marzia, Ramò, Lorenzo, Convertino, Domenica, Orlandini, Giorgio, Pace, Simona, Milekhin, Ilya, Magnozzi, Michele, Rahaman, Mahfujur, Zahn, Dietrich R. T., Coletti, Camilla, Canepa, Maurizio, Bisio, Francesco |
| المساهمون: | Ferrera, Marzia, Ramò, Lorenzo, Convertino, Domenica, Orlandini, Giorgio, Pace, Simona, Milekhin, Ilya, Magnozzi, Michele, Rahaman, Mahfujur, Zahn, Dietrich R. T., Coletti, Camilla, Canepa, Maurizio, Bisio, Francesco |
| بيانات النشر: | MDPI |
| سنة النشر: | 2022 |
| المجموعة: | Università degli Studi di Genova: CINECA IRIS |
| مصطلحات موضوعية: | 2D material, hybrid system, micro-optical spectroscopie, plasmonics |
| الوصف: | 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. |
| نوع الوثيقة: | article in journal/newspaper |
| وصف الملف: | ELETTRONICO |
| اللغة: | English |
| Relation: | info:eu-repo/semantics/altIdentifier/wos/WOS:000775660000001; volume:10; firstpage:120; lastpage:120; numberofpages:1; journal:CHEMOSENSORS; http://hdl.handle.net/11567/1077756; info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85127726246 |
| DOI: | 10.3390/chemosensors10030120 |
| الاتاحة: | http://hdl.handle.net/11567/1077756 https://doi.org/10.3390/chemosensors10030120 |
| Rights: | info:eu-repo/semantics/openAccess |
| رقم الانضمام: | edsbas.4AC4DBDD |
| قاعدة البيانات: | BASE |
| DOI: | 10.3390/chemosensors10030120 |
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