Patent ID: 8142890

Claim:
A method for synthesizing a dopant based core/shell single-crystalline, one dimensional CdS:Mn/ZnS nanowire comprising the steps of: selecting a reaction chamber; mixing cadmium acetate and thiourea in a 1:3 molar ratio with ethylenediamine solvent to form mixture I; adding the mixture of cadmium acetate, thiourea and ethylenediamine (mixture I) to the reaction chamber; adding a dopant source to the reaction chamber; closing the reaction chamber for a first time and placing the chamber in a preheated oven; allowing the reaction of cadmium acetate, thiourea, ethylenediamine (mixture I) and dopant to continue for approximately six hours to facilitate the solvothermal growth of cadmium sulfide nanorods and nanowires; removing the reaction chamber from the preheated oven after six hours and adding a mixed aqueous solution (mixture II) consisting of zinc acetate dehydrate, thiourea and water; closing the reaction chamber a second time and placing the chamber in a preheated oven; allowing the reaction of mixture I, dopant and mixture II to continue for approximately an additional 4 hours to facilitate the growth of a doped cadmium sulfide core with a zinc sulfide outer shell; removing the reaction chamber from the preheated oven for a second time and allowing the reactor to cool; and collecting a yellow precipitate that is washed, dried and analyzed to be a one-dimensional, doped cadmium sulfide/zinc sulfide (CdS:Mn/ZnS) core/shell nanowire wherein an overall diameter of the nanowire is less than or equal to 10 nanometers (nm) and an overall length to diameter ratio is up to approximately 150.