Optical and Electrical Properties of Glass/Graphene Oxide Thin Films

Abstract

The work studies the effect of Graphene oxide on the optical and electrical properties of glass prepared on glass substrates using sol–gel dip-coating technique. The deposited film was of about (60-100 ±5%) nm thickness. Optical and electrical properties of the films were studied under different graphene oxide concentrations of 2%, 4%, 6% and 8% wt. The results show that the optical band gap for glass-graphene oxide films decreased after adding the graphene oxide. Calculated optical constants, such as transmittance, extinction coefficient, have changed after adding graphene oxide. The structural morphology and composition of elements in the samples was demonstrated using SEM and EDX. The electrical properties of films include DC electrical conductivity increase in current as graphene oxide concentration increases was noticed.