Investigation of microstructure and spectral luminescence properties of perovskite films CH3NH3PbI3

Abstract

Investigation of microstructure and spectral-luminescent properties perovskite films (CH3NH3PbI3) was shown in this work. Perovskite films were made by two-step method synthesis with using the porous films of TiO2. Microscopic measurements show that the penetration depth of CH3NH3PbI3 film is 275 nm in TiO2 films. Spectral-luminescent properties of CH3NH3PbI3 films were investigated. Luminescence spectra indicate that on the surface of TiO2 film formed CH3NH3PbI3 films. Using of 35 μl of CH3NH3I solution leads to more quality perovskite films with fewer defects. The anneling temperature affects on luminescence intensity CH3NH3PbI3 of films has been studied.