Preparation method for improving electrical performance of laminated perovskite photovoltaic cell

The invention relates to a preparation method for improving the electrical performance of a laminated perovskite photovoltaic cell, and belongs to the technical field of photovoltaic cell preparation. Comprising the following steps: S1, carrying out LED treatment on a silicon wafer to damage a silicon-hydrogen structure in the silicon wafer; s2, carrying out dark annealing treatment on the silicon wafer after the LED treatment so as to release hydrogen atoms; s3, carrying out ultraviolet radiation treatment on the silicon wafer subjected to the dark annealing treatment; and S4, carrying out heat treatment on the silicon wafer subjected to the ultraviolet radiation treatment so as to decompose perovskite in the silicon wafer. By performing dark annealing treatment and LED treatment on the silicon wafer and performing ultraviolet radiation treatment and heat treatment on the silicon wafer, the passivation effect of the silicon wafer can be improved, the open-circuit voltage is increased, and the series resistan