Current synthetic techniques to high-quality quantum dots (QDs) involveorganometallic precursors that are hazardous and expensive and require they be rapidly injected into an extremely hot solvent to form the QDs. A new method for synthesizing high-quality CdSe QDs while circumventing these problems has been developed. Different cadmium salts were studied as Cd precursors alternative to dimethylcadmium. High-quality CdSe QDs were found possible with cadmium acetate as the Cd precursor. Changes in solvent temperature and reaction time had a systematic effect on QD particle sizes and the accompanying optical properties. These preliminary results point to a general method for producing high-quality QDs that is safer and much more versatile.
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