Influence of Zn 2+ and S 2− on the formation of CsPbBr 3 nanocrystals in fluorophosphate glass

This work validated a two-step formation mechanism of CsPbBr₃ perovskite nanocrystals in glass, consisting of a phase separation and subsequent phase transition towards nanocrystal formation. Further adjustment of the kinetics of the two processes was achieved by the incorporation of Zn²⁺ and S^2-, leading to improved optical performance.