A novel chemical synthesis route to cadmium-free quantum dots
Colloidal semiconductor nanocrystals, or quantum dots, have attracted a great deal of attention from academia and industry owing to their unique optical and electronic properties. Typical dots are made of binary compounds that often contain cadmium, which is toxic and therefore hinders their use in consumer products. Recent advances in the synthesis of indium phosphide quantum dots render them a promising cadmium-free alternative. A critical parameter for their use in light-emitting devices is achieving a narrow fluorescence emission spectrum. Funded by the Marie Skłodowska-Curie Actions programme, the InPlane project is developing a novel chemical synthesis method of two-dimensional indium phosphide nanoplatelets. Focus will be placed on the recrystallisation of small indium phosphide nanocrystals and cation exchange.