Polarized Photoluminescence Enhancement of Monolayer MoS₂ Coupled with Plasmonic Salisbury‐Type Absorber

Abstract

The plasmon-mediated manipulation of light-matter interaction in 2D atomically transition-metal dichalcogenides (TMDs) critically depends on the design of plasmonic nanostructures to achieve the maximum optical field in TMDs. Here, a metal-isolator-metal Salisbury-type perfect absorber is fabricated to serve as a generator of the localized surface plasmons. The significant photoluminescence (PL) enhancement up to 60-fold is observed experimentally in the monolayer MoS 2 on the top of this gold plasmonic hybrid nanostructures. Furthermore, the PL linear polarization can approach ≈60% around the peak of exciton emission and is independent on the polarization of the excitation laser. This Salisbury-type plasmon-exciton hybrid system paves a new way to develop optoelectronic devices based on TMDs.

Design and analysis of K and Ku-band wide-angle polarization-insensitive dual-band perfect metamaterial absorber

“…Applying this material, an emerging absorption device, the metamaterial absorber, has been proposed and achieves almost perfect electromagnetic waves (EM) wave absorption [13]. Compared with traditional absorbers, such as the Salisbury absorber [14][15][16] and ferrite absorber [17][18][19], MMAs have the benefit of being lightweight, size small, and ultra-thin thickness.…”