Sn doped ZnS nanowires for white light source material

1. A method of synthesizing tin (Sn)-doped Zinc Sulfide (ZnS) nanostructures for electroluminescent white light source, comprising;

coating a substrate, comprising a silicon oxide layer, with Sn by vacuuming depositing Sn as catalyst nanostructures on the substrate;

placing the substrate coated with Sn in a furnace;

introducing a carrier flow gas into the furnace;

adding a ZnS powder to the furnace;

growing ZnS nanostructures; and

dissolving Sn in the growing ZnS nanostructures;

wherein S vacancies are on a surface of the ZnS nanostructures, and

wherein the ZnS nanostructures are grown on the substrate having a temperature in a range of 750° C. to 850° C.;

wherein the ZnS nanostructures doped with Sn are grown on the substrate having a temperature of 780° C.;

wherein the carrier flow qas is a mixture of hydrogen and nitrogen qas is in a ratio of 1:4 that is introduced at flow rate of 30 Sccm; and

wherein a base pressure is during the Sn vacuum deposition is 1×10 −7 torr and a working pressure during the Sn vacuum deposition is 3×10 −6 torr.

2. The method of claim 1 , wherein the Sn self-doped ZnS nanostructures have broad emission in a range of 400 nm to 650 nm.

3. The method of claim 1 , wherein the deposited Sn is 2 nm or less.

4. The method of claim 1 , wherein blue, red, and green emissions of the ZnS nanostructures are controlled by growth conditions of Sn doped ZnS nanostructures.