Comparing Lead Iodide and Lead Acetate Based Perovskite Absorber Layers by Aerosol-Assisted Chemical Vapor Deposition

Aerosol-assisted chemical vapor deposition at atmospheric conditions has been used to deposit optically active lead perovskite thin films. Lead iodide and lead acetate trihydrate precursors were used and the resulting films compared. X-ray powder diffraction measurements confirmed the room temperature stable tetragonal phase which converted to monohydrate or dihydrate phase of perovskite. The stability of the differently derived films were studied by X-ray photoelectron spectroscopy by a detailed probing of surface chemistry and composition of deposited materials before and after argon etching.