SYNTHESIS AND CHARACTERIZATION OF CADMIUM SELENIDE QUANTUM DOTS NANOPARTICLES

Abstract

Semi-conductor nanocrystals, so called Quantum dots have been of great interest for both fundamental research and technical applications due to its novel physical and optical properties. Among the various materials used for fabrication, Cadmium Selenide (CdSe) nanoparticles have drawn much attention because of its potential application and variety of methods of its preparation. In this project we have synthesized CdSe NCs using colloidal chemistry which has used the Green Chemistry technique by considering Oleic acid and paraffin oil as the solvent in the solution and CdO and Se powder as precursors. The advantages of this method include the low–cost, environment friendly, fast and mass production of CdSe NCs with the desired quality. The synthesized CdSe nanoparticles were characterized by powder XRD, FTIR, UV- Visible, photoluminescence and Raman spectroscopy. The Raman spectra were in good agreement with XRD peaks confirming the formation of CdSe NCs. Also FTIR studies reveal the presence of capping agent Oleic acid on the CdSe NCs.