Synthesis and Applications of CdSe Nanoparticles

Polymer nanoparticle composite materials have attracted the interest of a number of researchers, due to their synergistic and hybrid properties derived from several components. Whether in solution or in bulk, these materials offer unique mechanical, electrical, optical and thermal properties. CdSe nanoparticles have been prepared at room temperature. Cadmium chloride 99 mM of 4 mL is added to 2.2g Poly vinyl alcohol. The volume of solution is made up to 50 mL by bi-distilled water and the solution is left for 24 hours at room temperature to swell. After that the solution is warmed up to 60 degrees C and stirred for 4 hours until viscous transparent solution is obtained. One milliliter of Sodium Hydrogen Selenide is dropped into the solution with gentle stirring. Solution is casted on flat glass plate dishes. After the solvent evaporation, a thin film containing CdSe nanoparticles are obtained. The film is washed with de-ionized water to remove other soluble salts before measurements.