Method for preparing inorganic lead-free halide perovskite film by coevaporation
A halide perovskite and inorganic non-ferrous technology, which is applied in the field of co-evaporation to prepare inorganic non-lead halide perovskite thin films, can solve problems such as Pb pollution and organic instability, and achieve smooth surface, less internal defects, and better performance. unstable effect
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[0028] The invention provides an inorganic non-lead halide (chemical formula is CsSnX 3 Or Cs 2 SnX 6 , X is one or more of the halogen elements Cl, Br or I) perovskite film, which is mainly used in perovskite batteries. The invention uses figure 1 The shown co-evaporation equipment is used to prepare inorganic non-lead halide perovskite films. The co-evaporation equipment includes a vacuum chamber 1, CsX evaporation source 2, SnX 2 Evaporation source 3, sample baffle 4, heated sample holder 5, sample rotation axis 6, the CsX evaporation source 2, SnX 2 The evaporation source 3, the sample baffle 4, and the heated sample holder 5 are all arranged in the vacuum chamber 1, where X is one or more of Cl, Br, and I; the sample rotating shaft 6 and the sample The frame 5 is connected for rotating and opening the vacuum chamber 1, such as figure 1 As shown by the rotating arrow in.
[0029] Such as figure 2 As shown, the process of preparing the inorganic lead-free halid...
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