Manipulating the light-matter interactions in plasmonic nanocavities at 1 nm spatial resolution

Abstract

The light-matter interaction between plasmonic nanocavity and exciton at the sub-diffraction limit is a central research field in nanophotonics. Here, we demonstrated the vertical distribution of the light-matter interactions at ~1 nm spatial resolution by coupling A excitons of MoS2 and gap-mode plasmonic nanocavities. Moreover, we observed the significant photoluminescence (PL) enhancement factor reaching up to 2800 times, which is attributed to the Purcell effect and large local density of states in gap-mode plasmonic nanocavities. Meanwhile, the theoretical calculations are well reproduced and support the experimental results.

Flexible CsPbBr3 microwire photodetector with a performance enhanced by covering it with an Ag nanolayer

“…45–47 Metal structures have been employed to optimize the performance of optoelectronics and optical devices. 48–56 Among those, Ag is widely used to realize performance-enhanced photodetection for the work function of Ag is close to that of most perovskites. Thus, it is meaningful to carry out an investigation about performance-enhanced perovskite photodetectors in combination with Ag.…”

Review of Interface Modification Based on 2D Nanomaterials for Surface Plasmon Resonance Biosensors

“…In Figure 9d, by embedding the MoS 2 monolayer into the gap of the plasma nanocavity, the required device for manipulating the light−matter interaction was constructed. 167 The vertical distribution of the actual system coupling in the plasma nanocavity is studied. Due to the formation of a high luminescent system, a high PL enhancement factor of 2800 times is achieved in the structure.…”

“…(d) Schematic of the coupling between the A-excitons of monolayer MoS 2 and the plasmon in a gap-mode plasmonic nanocavity. Reprinted with permission from ref . Copyright 2022 Springer Nature.…”

“…A plasmon nanocavity can realize efficient light–matter interaction. In Figure d, by embedding the MoS 2 monolayer into the gap of the plasma nanocavity, the required device for manipulating the light–matter interaction was constructed . The vertical distribution of the actual system coupling in the plasma nanocavity is studied.…”

How to Obtain the Correct Rabi Splitting in a Subwavelength Interacting System

“…In our NCOM system, an alumina layer was used to separate the TMD and the metal film, and we found a minor change of the exciton energy measured in the NCOM compared with the surrounding TMD. This is consistent with previous works using TMD inserted in the NPOM configuration. − …”