Perovskite solar cell based on passivator and preparation method thereof

The invention belongs to the field of perovskite solar cell preparation, and particularly relates to a perovskite solar cell based on a passivator and a preparation method of the perovskite solar cell. The perovskite solar cell based on the passivator comprises a passivation layer; a passivating agent in the passivation layer comprises an organic matter; the functional groups of the organic matter at least comprise phenyl and sulfydryl. The passivation layer of the perovskite solar cell can passivate defects on the surface and at the grain boundary of perovskite, and the transmission performance of charges is effectively improved; in addition, the contact between the perovskite and water vapor and oxygen can be isolated, the degradation of the perovskite is inhibited, the stability of the device is improved, and the photoelectric conversion efficiency of the solar cell is improved. The organic matter at least comprising phenyl and sulfydryl is used as the passivating agent, so that the defect density of the p