Localized surface plasmon resonance in graphene nanomesh with Au nanostructures

TL;DR

This study investigates a hybrid graphene nanomesh with gold nanodisks to enhance light absorption via localized surface plasmon resonance, supported by experimental and simulation results, aiming to improve graphene-based photodetectors.

Contribution

It introduces a novel hybrid structure combining graphene nanomesh and gold nanodisks, demonstrating enhanced light absorption and wavelength selectivity for photodetector applications.

Findings

Enhanced absorption in the visible range due to gold nanodisks

Simulation confirms experimental absorption enhancement

Potential for high-efficiency, wavelength-selective photodetectors

Abstract

A hybrid structure of a graphene nanomesh with the gold nanodisks is studied to enhance the light absorption by localized surface plasmon resonance. From the reflection spectra of the visible range for graphene nanomesh samples without and with nanodisks, it is found that the absorption of graphene nanomesh structures is greatly enhanced in the presence of gold nanodisks around the resonance wavelength. Simulation results based on the finite-difference time-domain method support the experimental observations. This study demonstrates the potential of constructing graphene based photodetectors with a high light absorption efficiency and wavelength selectivity.