Exploration of optical properties of novel and flexible CS-GO composites

Extraordinary features of bio-degradable Chitosan (CS) and 2-D nano-filler (Graphene Oxide: GO) has motivated us to study the optical properties of newly developed polymer composites: CS-GO. For the synthesized CS-GO composites via usual solution mixing technique, we have explored optical properties in terms of absorption spectra, optical band gaps (direct and indirect both), refractive index and Urbach energies. According to the outcomes, it has been noted that the amount of 2-D nano-filler has capability to reduce the band gap; while the refractive index and Urbach energy is increased significantly on increasing amount of GO.