Hybrid organometal halide perovskites are known for their excellent optoelectronic functionality as well as their wide‐ranging chemical flexibility. The composition of hybrid perovskite devices has trended toward increasing complexity as fine‐tuned properties are pursued, including multielement mixing on the constituents A and B and halide sites. However, this tunability presents potential challenges for charge extraction in functional devices. Poor consistency and repeatability between devices may arise due to variations in composition and microstructure. Within a single device, spatial heterogeneity in composition and phase segregation may limit the device from achieving its performance potential. This review details how the nanoscale elemental distribution and charge collection in hybrid perovskite materials evolve as chemical complexity increases, highlighting recent results using nondestructive operando synchrotron‐based X‐ray nanoprobe techniques. The results reveal a strong link between local chemistry and charge collection that must be controlled to develop robust, high‐performance hybrid perovskite materials for optoelectronic devices.

中文翻译：

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杂化卤化物钙钛矿中化学柔性与纳米级电荷收集之间的关系

杂化有机金属卤化物钙钛矿以其出色的光电功能以及广泛的化学灵活性而著称。随着追求微调性能的发展，混合钙钛矿设备的组成趋向于增加复杂性，包括在成分A和B以及卤化物位点上进行多元素混合。但是，这种可调性对功能器件中的电荷提取提出了潜在的挑战。器件之间的一致性和可重复性差，可能是由于成分和微结构的变化所引起的。在单个设备内，成分和相分离的空间异质性可能会限制设备发挥其性能潜能。这篇综述详细介绍了混合钙钛矿材料中纳米级元素分布和电荷收集如何随着化学复杂性的增加而演变，重点介绍了使用基于无损操作同步加速器的X射线纳米探针技术的最新结果。结果表明，必须控制局部化学与电荷收集之间的紧密联系，才能开发出用于光电器件的坚固，高性能的混合钙钛矿材料。