The synthesis of lead halide perovskites typically involves airborne H2O molecules, which can exist in gaseous, liquid, or solid forms. Generally, H2O is considered harmful to perovskite materials and devices, causing alarm at the mere mention of it. However, this pair of “old friends” always demonstrate a complex “love-hate” relationship. In some cases, H2O can positively affect perovskites, endowing them with excellent properties. A comprehensive understanding of their interactions with H2O will be crucial for the commercialization of perovskites. Here, we summarize recent progress on the interactions between H2O and lead halide perovskites, focusing primarily on three areas: growth regulation, crystallization regulation, and interactions with already-formed perovskites. These interactions allow perovskites to be widely used in a variety of fields, including light-emitting diodes, solar cells, photodetectors, anti-counterfeiting, and bioimaging. Finally, we discuss the challenges and prospects of green synthesis, interfacial chemistry, and precursor solution chemistry.

中文翻译：

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H2O 与卤化铅钙钛矿的相互作用：研究进展及应用


卤化铅钙钛矿的合成通常涉及空气中的 H2O 分子，这些分子可以以气态、液态或固态形式存在。通常，H2O 被认为对钙钛矿材料和器件有害，一提到它就会引起警惕。然而，这对“老朋友”总是表现出一种复杂的“爱恨交织”的关系。在某些情况下，H2O 可以对钙钛矿产生积极影响，赋予它们优异的性能。全面了解它们与 H2O 的相互作用对于钙钛矿的商业化至关重要。在这里，我们总结了 H2O 和氢化铅钙钛矿之间相互作用的最新进展，主要集中在三个领域：生长调节、结晶调节以及与已经形成的钙钛矿的相互作用。这些相互作用使钙钛矿能够广泛应用于各个领域，包括发光二极管、太阳能电池、光电探测器、防伪和生物成像。最后，我们讨论了绿色合成、界面化学和前驱体溶液化学的挑战和前景。