ABSTRACT
Among fluorescent materials in nanoscale regime, nontoxic carbon quantum dots (CQDs) are explored extensively and widely studied for the past few years. CQDs prepared from board selection of inexpensive green carbonaceous precursors exhibits emission wavelengths ranging blue to red with high quantum yield. Moreover, excitation dependent emission, biocompatibility, aqueous solubility, and high photostability of CQDs activated more and more research to finely tune their properties. Due to these unique and fascinating qualities, CQDs could replace toxic organic dyes and quantum dots becoming promising materials for photovoltaics, photocatalysis, bioimaging, and chemical sensing applications. This chapter includes a brief description on certain remarkable properties of CQDs and their potential applications.
