Investigation of structural and optical properties of graphene derivatives as a route for optical sensing

Abstract

In the present research work, thick films of graphene oxide (GO) and reduced graphene oxide (rGO) were fabricated on glass substrate by using standard screen-printing technique. Silver paste was used to make contacts of thick films. Fabricated thick films of GO and rGO were characterized by scanning electron microscopy (SEM), elemental data analysis (EDS), and X-ray diffraction (XRD) to make sure the morphological, elemental and structural characteristics of the thick films. Optical characteristics of the fabricated thick films were carried out by UV Spectra, Raman spectroscopy and Fourier Transform Infrared Spectroscopy (FTIR). In addition, the optical studies were performed by homemade system to investigate the effect incident light intensity with different colour (Blue, Yellow, and Green) filters on GO and rGO sensing. XRD and EDS confirms the materials were GO and rGO. The findings revealed that reduced graphene oxide has a high light absorption capacity to consider as an optical sensor.