LIVAKAS N.

Halide exchange is a popular strategy to tune the properties of CsPbX3 nanocrystals after synthesis. However, while Cl ? Br and Br ? I exchanges proceed through the formation of stable mixed-halide nanocrystals, the Cl? I exchange is more elusive. Indeed, the large size difference between chloride and iodide ions causes a miscibility gap in the...

We report a colloidal synthesis of blue emissive, stable cube-shaped CsPbBr3 quantum dots (QDs) in the strong quantum confinement regime via dissolution-recrystallization starting from pre-syntesized (KxCs1-x)4PbBr6 nanocrystals which are then reacted with PbBr2. This is markedly different from the known case of Cs4PbBr6 nanocrystals that react...