Patent ID: 7208133
Filing Date: 2007-04-24
Classification: B82Y,C01G,C01P,C09K,Y10S

Abstract:
1. A method of forming IV-VI nanoparticles comprising; introducing, in the presence of at least one surfactant, a first precursor selected from the group consisting of a molecular precursor of a Group IV element and a molecular precursor of a Group VI element into a reaction vessel that comprises at least an organic solvent to form a mixture; heating the mixture to a temperature of about 90° C. or above; adding, in the presence of said at least one surfactant, a second precursor which is different from the first precursor and is selected from the group consisting of a molecular precursor of a Group IV element and a molecular precursor of a Group VI element into the heated mixture; mixing the mixture to initiate nucleation of IV-VI nanocrystals; and controlling the temperature of the nanocrystals to provide substantially monodispersed IV-VI nanoparticles having a diameter of about 20 nm or less.