Strategy to Synthesize Tunable Emissive ZnS QDs Enabled by Cobalt Doping

In recent years, tunable fluorescent emissive zinc sulfide quantum dots (ZnS QDs) have increased the usefulness and significance of the white light-emitting diode. Herein, we reported the synthesis of cobalt-doped ZnS QDs by co-precipitation method. Examinations using X-ray diffraction (XRD) technology supported the cubic crystalline structure. We provide a novel approach with improved photoluminescence resulting in a strong yellowish-orange emission due to cobalt (Co) doping. The synthesis method used in the current work gives the possibility of producing emission-tuned, low-cost, rare-earth free nanophosphors for creating high-performance light-emitting devices.