Enhanced visibility of graphene: effect of one-dimensional photonic crystal

TL;DR

This paper theoretically demonstrates that placing graphene on a one-dimensional photonic crystal significantly enhances its visibility, which can be tuned by incident angle and wavelength due to absorption and reflectance effects.

Contribution

It introduces a method to enhance and control graphene visibility using 1D photonic crystals, providing a tunable optical approach.

Findings

Graphene visibility is greatly enhanced on 1D photonic crystals.

Visibility can be tuned by incident angle and wavelength.

Enhanced reflectance and absorption are key factors.

Abstract

We investigate theoretically the light reflectance of a graphene layer prepared on the top of one-dimensional Si/SiO2 photonic crystal (1DPC). It is shown that the visibility of the graphene layers is enhanced greatly when 1DPC is added, and the visibility can be tuned by changing the incident angle and light wavelengths. This phenomenon is caused by the absorption of the graphene layer and the enhanced reflectance of the 1DPC.