Silicon nanoantennas for tailoring the optical properties of MoS2 monolayers
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.
Keywords
Cite
@article{arxiv.2504.03264,
title = {Silicon nanoantennas for tailoring the optical properties of MoS2 monolayers},
author = {Danae Katrisioti and Peter R. Wiecha and Aurélien Cuche and Sotiris Psilodimitrakopoulos and Guilhem Larrieu and Jonas Müller and Vincent Larrey and Bernhard Urbaszek and Xavier Marie and Emmanuel Stratakis and George Kioseoglou and Vincent Paillard and Jean-Marie Poumirol and Ioannis Paradisanos},
journal= {arXiv preprint arXiv:2504.03264},
year = {2025}
}
Comments
22 pages, 6 figures