Carboxyl-Free Synthesis of Red InP/ZnSe/ZnSeS/ZnS Quantum Dots with Narrow Full Width at Half Maximum

InP based quantum dots are a new type of fluorescent nanomaterials, which have a very promising potential to replace heavy metal contained quantum dots such as Cd-based ones due to their low toxicity and environmentally friendly properties. In this paper, ZnCl2 instead of zinc carboxylate was chosen as the zinc source, and low-cost and low-toxicity tris(dimethylamino)phosphine) (DMA)3P was used as the phosphorus source, red-emitting InP/ZnSe/ZnSeS/ZnS quantum dots with a narrow full width at half maximum (44 nm) and a photoluminescence quantum yield (PLQY) of 73% were synthesized using a one-pot method.