Trans-perovskite solar cell based on integrated passivation strategy and preparation method thereof

Abstract

The invention relates to the technical field of photovoltaic solar cells, in particular to a trans-perovskite solar cell based on an integrated passivation strategy and a preparation method thereof, and the structure of the solar cell sequentially comprises a conductive substrate layer, a hole transport layer, a perovskite active layer, an electron transport layer and a back electrode layer from bottom to top. The perovskite active layer contains passivator molecules, and the passivator molecules are selected from any one or more of dimethyl acetone phosphonate, methyl acetoacetate, dimethyl ethyl phosphoryl acetate, methyl diethyl phosphoryl acetate and trimethyl phosphate acetate. The passivation molecules are directly introduced into the perovskite precursor solution, and the passivation molecules are finally distributed on the upper surface, the bulk phase and the lower surface of the perovskite thin film by means of a top-down growth mechanism of the perovskite light absorption layer, so that integrated passivation is realized.

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