Room temperature formation of organic–inorganic lead halide perovskites: design of nanostructured and highly reactive intermediates

We propose a room-temperature scheme of ligand-promoted formation of high-quality perovskite films through the judicious design of nanostructured PbI 2 ·(L) x intermediates, where L denotes the ligand. The mechanisms and features of the ideal ligand have been investigated through a combined experimental and theoretical study.