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This work was focused on synthesis and physicochemical analysis of composite films CH3NH3PbI3/ZnO. Zinc oxide is the possible analogue of titanium dioxide which demonstrates higher carrier motilities both for electron and holes. Thin films of zinc dioxide were obtained by spin-coating method using different colloidal solutions of ZnO nanoparticles (10-20 ± 3 nm diameter) in alcohols and mixed solvents. Characteristic diameter of particles strongly depends on temperature of the primary synthesis process. Dozens of nanometers thick ZnO films were produced.