Perovskite cell preparation method

Abstract

The invention provides a perovskite cell preparation method. The preparation method comprises the following steps: S1, preparing a slow release agent for gradually releasing a defect passivating agent; S2, preparing a precursor solution, and adding a slow release agent in the preparation process; S3, preparing a perovskite thin film on the surface of the substrate by using the precursor solution; S4, preparing a hole transport-electron barrier layer and an electron transport-hole barrier layer on the surface of the perovskite thin film; and S5, preparing electrodes on the surfaces of the hole transport-electron blocking layer and the electron transport-hole blocking layer. A defect passivator is loaded in the porous or hollow metal nanospheres, an organic matter with a mesoporous structure, an organic-inorganic compound or a polymer, and the defect passivator is gradually released in the operation process of the perovskite solar cell, so that the action time of the defect passivator is prolonged, and the effect of prolonging the operation time of the perovskite solar cell device is achieved.

Description

technical field [0001] The invention relates to the field of batteries, in particular to a method for preparing a perovskite battery. Background technique [0002] The general structural formula of perovskite is ABX 3 , where A is a metal or organic cation, B is a metal cation, and X is a halogen element. At present, the field of perovskite solar cells is booming, and the photoelectric conversion efficiency can be comparable to that of silicon-based solar cells. Due to its solution preparation process and high defect tolerance, it has received more and more attention and has broad application prospects. At present, the structure of perovskite solar cells can be divided into planar and mesoporous structures. The planar structure is divided into positive and inverted structures. The positive structure mainly uses tin oxide and titanium dioxide as the charge transport layer, and the inverted structure mainly uses PEDOT:PSS, PTAA, nickel oxide, etc. are used as the charge tra...

AI Technical Summary

Problems solved by technology

Although the introduction of a defect passivator can reduce the defects in the perovskite solar cell film, however, the defect passivator is usually a sacrificial material, which will still degrade during the operation of the perovskite solar cell, thus losing the original defect passivation performance

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