I always had a trouble. After the CuInS quantum dots were synthesized, the zinc precursor was thermally injected at a high temperature, so that the spectrum blue shifted by 70nm to form a ZnS-CuInS alloy. When I wanted to grow a really effective ZnS shell on this alloy layer, a contradiction appeared. If I want to continue to improve PLQY, I must continue alloying at high temperature (blue shift 10-20nm). If it is at low temperature, it will make PLQY basic no change. So how should I grow a real ZnS shell layer on the basis of ZnS-CuInS alloy quantum dots to ensure that PLQY rises and Cu ions do not diffuse to the outer layer.
the CuInS2/ZnS core/shell quantum dots (QDs) can prepared via simple and environmentally friendly solvothermal synthesis using as phosphors for white light-emitting diodes (WLEDs). The surface defect of the CuInS2 core QDs can passivate by the ZnS shell by forming CuInS2/ZnS core/shell QDs. By adjusting the Cu/In ratio and the nucleation temperature
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