Solvothermal synthesis of cesium lead halide nanocrystals with controllable dimensions: a stoichiometry defined growth mechanism

We presented here a solvothermal approach to synthesize CsPbX3 nanostructures with precisely controlled dimensions. By simply varying the amount of Cs precursor, three-dimensional nanocubes, two-dimensional nanoplatelets/nanoribbons and one-dimensional nanorods with high uniformity in morphology and size were successfully synthesized. A stoichiometry defined growth mechanism has been proposed to explain the growth mechanism. This work not only adds another effective tool in the synthesis toolbox, but also helps to understand the formation mechanism of CsPbX3 nanostructures.