Silicon nanoantennas for tailoring the optical properties of MoS2 monolayers
arXiv:2504.03264 · doi:10.1063/5.0284138
Abstract
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 three-fold enhancement in photoluminescence and an excitation-wavelength-dependent emission that aligns with Mie-resonant modes. Raman spectroscopy reveals an up to 8-fold 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.
arXiv comment22 pages, 6 figures
References in corpus (31)
- Anomalous Lattice Vibrations of Single and Few-Layer MoS2
- Observation of tightly bound trions in monolayer MoS2
- Bandgap Engineering of Strained Monolayer and Bilayer MoS2
- Excitons in atomically thin transition metal dichalcogenides
- Exciton physics and device application of two-dimensional transition metal dichalcogenide semiconductors
- Observation of Intense Second Harmonic Generation from MoS Atomic Crystals
- Electronic structures and theoretical modelling of two-dimensional group-VIB transition metal dichalcogenides
- Ultrafast Dynamics of Defect-Assisted Electron-Hole Recombination in Monolayer MoS2
- Band Gap Engineering with Ultralarge Biaxial Strains in Suspended Monolayer MoS2
- Strong-coupling of WSe2 in ultra-compact plasmonic nanocavities at room temperature
- Interference effect on Raman spectrum of graphene on SiO_2/Si
- Photonic-Crystal Exciton-Polaritons in Monolayer Semiconductors
- Silicon Mie Resonators for Highly Directional Light Emission from monolayer MoS2
- Experimental Verification of the Spectral Shift between Near- and Far-Field Peak Intensities of Plasmonic Nanoantennas
- Interlayer excitons in bilayer MoS2 with strong oscillator strength up to room temperature
- Enhanced light-matter interaction in an atomically thin semiconductor coupled with dielectric nano-antennas
- Prospects and challenges of quantum emitters in 2D materials
- Bright single photon emitters with enhanced quantum efficiency in a two-dimensional semiconductor coupled with dielectric nano-antennas
- Multipolar interference effects in nanophotonics
- Guide to optical spectroscopy of layered semiconductors
- Intense femtosecond photoexcitation of bulk and monolayer MoS2
- Mie-excitons: understanding strong coupling in dielectric nanoparticles
- Second harmonic generation control in twisted bilayers of transition metal dichalcogenides
- Dielectric nano-antennas for strain engineering in atomically thin two-dimensional semiconductors
- pyGDM -- new functionalities and major improvements to the python toolkit for nano-optics full-field simulations
- Enhanced Excitation and Emission from 2D Transition Metal Dichalcogenides with All-Dielectric Nanoantennas
- Excitonic beam steering in an active van der Waals metasurface
- Spatial Non-Uniformity in Exfoliated WS2 Single layers
- Unveiling the optical emission channels of monolayer semiconductors coupled to silicon nanoantennas
- Probing the optical near-field interaction of Mie nanoresonators with atomically thin semiconductors
- Directional silicon nano-antennas for quantum emitter control designed by evolutionary optimization