Kinetic Control for Continuously Tunable Lattice Parameters, Size, and Composition during CsPbX (X = Cl, Br, I) Nanorod Synthesis.

The fast kinetics of all-inorganic CsPbX (X = Cl, Br, or I) nanocrystal growth entail that many synthetic strategies for structural control established in other semiconductor systems do not apply. Rather, products are often determined by thermodynamic factors, limiting the range of synthetic outcomes and functionality. In this study, we show how reaction kinetics are significantly slowed if nanocrystals are prepared using a dual injection strategy that moderates the crucial interaction between cesium and halide during nucleation and growth.