Method for improving stability of perovskite

The invention discloses a method for improving perovskite stability by encapsulating perovskite with a metal organic framework, and belongs to the field of organic-inorganic hybridization. The high stability and the porous performance of a mesoporous crystal material MOF-74 are utilized, and a perovskite precursor is adsorbed into the mesopores to make the perovskite precursor crystallized and nucleated in the mesopores to form a CH3NH3PbBr3@MOF-74 composite material. The stability in an atmospheric environment is improved on the premise of keeping the original excellent photoluminescence performance of perovskite. 本发明公开了一种利用金属有机框架封装钙钛矿来提高钙钛矿稳定性的方法，属于有机无机杂化领域。本发明利用介孔晶体材料MOF-74的高稳定性和多孔性能，将钙钛矿前驱体吸附到介孔内部，使钙钛矿前驱体在介孔内结晶形核，形成CHNHPbBr@MOF-74复合材料，在保留钙钛矿原有优良的光致发光性能的前提下，提高在大气环境下的稳定性。