Silicon nanoantennas for tailoring the optical properties of MoS2 monolayers
Silicon-based dielectric nanoantennas provide an effective platform for engineering light–matter interactions in van der Waals semiconductors. Here, we demonstrate near-field coupling between monolayer MoS2 and silicon nanoantennas arranged in hexagonal lattices with tunable geometric parameters, leading to a threefold enhancement in photoluminescence and an excitation-wavelength-dependent emission that aligns with Mie-resonant modes. Raman spectroscopy reveals an up to eightfold enhancement in the vibrational modes of MoS2, while second-harmonic generation exhibits a 20 to 30-fold increase in efficiency, closely correlating with the presence of the underlying nanoantennas. Our experiments and simulations quantify the tunable benefits of the near-field interactions, taking into account thin-film interference and strain-induced effects. Our findings present dielectric nanoantennas as a promising platform for tailoring linear and nonlinear optical properties in 2D materials, with potential applications in nanophotonic devices and integrated photonics.
Authors
- Ioannis Paradisanos (ORCID: https://orcid.org/0000-0001-8310-710X)
- Bernhard Urbaszek (ORCID: https://orcid.org/0000-0003-0226-7983)
- Peter R. Wiecha (ORCID: https://orcid.org/0000-0002-4571-0116)
- Jean‐Marie Poumirol (ORCID: https://orcid.org/0000-0003-4211-4033)
- Guilhem Larrieu (ORCID: https://orcid.org/0000-0001-5157-2277)
- X. Marie (ORCID: https://orcid.org/0000-0002-7772-2517)
- Vincent Larrey (ORCID: https://orcid.org/0000-0002-1736-0104)
- Vincent Paillard (ORCID: https://orcid.org/0000-0002-9085-0396)
- Γ. Κιοσέογλου (ORCID: https://orcid.org/0000-0001-7276-4403)
- Aurélien Cuche (ORCID: https://orcid.org/0000-0002-1851-9578)
- Sotiris Psilodimitrakopoulos (ORCID: https://orcid.org/0000-0001-6617-0369)
- Jonas Müller (ORCID: https://orcid.org/0000-0002-8703-0872)
- Emmanuel I. Stratakis (ORCID: https://orcid.org/0000-0002-1908-8618)
- Danae Katrisioti (ORCID: https://orcid.org/0009-0000-9346-862X)
Institutions
- Centre National de la Recherche Scientifique (FR)
- Université Toulouse III - Paul Sabatier (FR)
- University of Crete (GR)
- Université Fédérale de Toulouse Midi-Pyrénées (FR)
- Institut Universitaire de France (FR)
- Institut National des Sciences Appliquées de Toulouse (FR)
- Commissariat à l'Énergie Atomique et aux Énergies Alternatives (FR)
- CEA Grenoble (FR)
- Technische Universität Darmstadt (DE)
- Foundation for Research and Technology Hellas (GR)
- Université Grenoble Alpes (FR)
Publication Details
- Journal
- Applied Physics Letters
- Published
- 2025-11-03
- DOI
- https://doi.org/10.1063/5.0284138
- Primary Topic
- Plasmonic and Surface Plasmon Research
- Type
- article
- Field-Weighted Citation Impact
- 0.00