Dopant-driven 0D-to-3D phase transition in perovskite nanocrystals via interfacial ligand shuttling

Abstract

Here, we report a room-temperature, post-synthetic Mn²⁺ doping method for perovskite nanocrystals (NCs) in non-polar solvents using zero-dimensional (0D) Cs₄PbBr₆ as a scaffold. The Pb²⁺-poor structure enables Mn²⁺ incorporation, inducing phase transition to CsPb_1−xMn_x(Cl/Br)₃ with dual emission via oleylamine-mediated hydrogen-bond transfer.