Studies on carbon dots and carbon dots decorated graphene oxide for non linear optical applications

Abstract

The 21st century has seen dramatic advances in nanoscience and nanotechnology. Modern science is keen to develop high-performance nanomaterials that are suitable for a wide range of applications. Now, nanomaterials are in every field that can alter our daily life for the better. Many of these materials present unique and exciting optical properties that are highly suitable for various photonic applications. newlineInorganic nanomaterials are well studied and their uses have been limited in terms of toxicity, cost and potential environmental effects. Currently, we are looking for low-cost and biocompatible materials to replace the conventional ones with better performance. Green synthesis with mild reaction conditions and non-toxic precursors has been put forward in nanotechnology to promote environmental sustainability. In the recent decade, organic molecules-based nanomaterials have drawn intensive attention in their advantages and performance. Carbon Dots (CDs) are emerging nanomaterials from organic molecules with merits including excellent bio-compatibility for both in vitro and in vivo, resistance to photo-bleaching, outstanding colloidal stability, eco-friendly synthesis, and low cost. Available green synthesis of carbon dots aims at minimizing generated waste and employing sustainable processes. CDs have been successfully utilized in many photonic applications like bio-imaging, solar cells, photocatalysis, sensors, and light-emitting diodes. newlineThis thesis presents the linear and nonlinear characteristics of carbon dots and carbon dots decorated graphene oxide for potential applications in photonics.