Abstract

• In recent years, perovskite solar cells have attracted as a potentially inexpensive and high performing materials for photovoltaic systems. The effects of drying temperature on the structural properties of methyl ammonium lead iodide (CH3NH3PbI3) perovskite film, absorber layer in perovskite solar cell, was investigated in order to use on an electron transport layer (ETL) in perovskite solar cell. Perovskite film at different drying temperatures was prepared by two-steps spin coating method. Zinc stannate (Zn2SnO4) materials for electron collection layer was synthesized by chemical precipitation method. The optimum drying temperatures of CH3NH3PbI3 perovskite absorber layer were varied by changing the drying temperatures at room temperature, 60, 100, and 150 ºC respectively. The crystal structures of final products of each layer were characterized by X-ray diffraction (XRD) technique. The surface morphology of CH3NH3PbI3/Zn2SnO4/FTO films was observed by scanning electron microscope (SEM). The optimum drying temperature for perovskite absorber layer was found out to be 100 ºC for 30 min in air.