Abstract
Recently, inorganic perovskite materials have attracted extensive attention due to their advantages such as excellent photoelectric performance, adjustable band gap and simple preparation process. At present, the photoelectric conversion efficiency of inorganic perovskite solar cells have exceeded 19.0%. However, there are many kinds of defects on the surfaces and grain boundaries of the perovskite films, which seriously affect the efficiency and stability of the device. Therefore, how to effectively control the crystallization process and passivate the surface defects of the inorganic perovskite films are challenges in this field.In this paper, by analyzing the types and mechanism of inorganic perovskite film defects, the influence of inorganic perovskite film preparation technique on crystallization in recent years is reviewed, passivation strategies for different kinds of additives are discussed in combination with Lewis acid base theory, and interface engineering on both sides of the perovskite film is summarized. Finally, the future research emphasis of inorganic perovskite solar cell is prospected.
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