Chemical method for synthesizing perovskite type CH3NH3PbBr3 film material through in-situ large area control based on lead monomer film

Abstract

The invention relates to a chemical method for synthesizing a perovskite type CH3NH3PbBr3 film material through in-situ large area control based on a lead monomer film. The lead monomer film is obtained on the surface of a substrate, the substrate material with the lead monomer film is horizontally soaked in an organic solution including bromination methylamine, and the CH3NH3PbBr3 film material can be obtained in situ through the constant-temperature reaction. According to the method, operation is simple, the spin coating process is not needed, the CH3NH3PbBr3 film can be obtained on a large area, and the problem of large-size device manufacturing is effectively solved. The obtained CH3NH3PbBr3 film is high in purity, even in film surface crystal, superior in crystallinity and low in energy consumption and manufacturing cost and has wide industrial application prospects.

Description

Technical field:

[0001] The invention belongs to the technical field of material chemistry, and in particular relates to an in-situ large-area controlled synthesis of perovskite-type CH on different substrates based on the surface of metal lead. 3 NH 3 PbBr 3 Chemical approach to thin film materials. Background technique:

[0002] As early as the last century, Mitzi and his colleagues first discovered and studied lead halide perovskite, which is mainly used as the emission layer of light-emitting diodes and field effect transistors. Other scientists have gradually discovered the unique optical properties of perovskite materials And electrical properties, such as photoluminescence, electroluminescence, third-order optical nonlinearity, etc., but perovskite materials have not been applied in solar cell devices. The main advantages of this type of material are as follows: (1) Due to the high charge carrier mobility and good light absorption performance of the inorganic com...

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