摘要： Solutions of methylammonium and formamidinium polyhalides (AX1+n, A = MA, FA, X = I, Br) in isopropanol are introduced as a novel versatile precursor for the fabrication of APbX3 hybrid perovskite thin films via oxidation of metallic Pb. The polyhalides solution with adjustable reactivity is distributed over metallic Pb layer followed by an iodine vapor post-processing to tune the morphology and composition of the film using only the elements inherently present in the perovskite. This method is easily reproducible in any materials science laboratory with an equipment commonly used for perovskite solar cells fabrication and resulted in 16.2% and 17.2% PCE of planar solar cells using MAPbI3 and MA0.25FA0.75PbI2.75Br0.25 perovskites as a proof-of-concept. Implementation of metallic lead thin films as a single Pb-containing precursor reduces a number of in-lab handling hazards compared to classical PbI2 powder and solutions, and provides a variety of scalable deposition options.