Original Articles
G Sivasankari, E Sundharavadiv
Abstract
In recent existence, ZnO quantum dots (QD) have fascinated awareness as awfully hopeful candidates for optoelectronic, electronic, and biological applications. Low toxicity, low cost, and biocompatibility makes them excellent candidates for in vivo bio-imaging, gene/drug delivery and cancer detection. This QD have too promised momentous burst through an examine for sterile agents, and in exposure of imperative antigens and allergens because of their high isoeletric points. The ZnO Quantum dots were synthesized. The quantum dots are characterized by using UV-Visible spectroscopy, Fluorescence Spectrophotometer, X-ray diffraction studies, Transmission Electron Microscope and Electron dispersive spectroscopy are found to be having a particle in the range from 2 nm to 5 nm. This study shows that lowest grain size and highest band gap influences the optical properties by reducing the size. Due to excellent optical properties such as size tunable fluorescence and a narrow and symmetric emission profile a broad excitation range II-IV fluorescent Quantum dots have undergone intensive investigation as a new type of biolabling over a recent years and also proven to be superior to conventional dyes. The ease of processing and good photoluminescence property of ZnO quantum dots provides practical and economical approach signal-target imaging application.