Organic–inorganic halide perovskites have emerged as a promising family of functional materials for advanced photovoltaic and optoelectronic applications with high performances and low costs. Various chemical methods and processing approaches have been employed to modify the compositions, structures, morphologies, and electronic properties of hybrid perovskites. However, challenges still remain in terms of their stability, the use of environmentally unfriendly chemicals, and the lack of an insightful understanding into structure–property relationships. Alternatively, pressure, a fundamental thermodynamic parameter that can significantly alter the atomic and electronic structures of functional materials, has been widely utilized to further our understanding of structure–property relationships, and also to enable emergent or enhanced properties of given materials. In this perspective, we describe the recent progress of high-pressure research on hybrid perovskites, particularly regarding pressure-induced novel phenomena and pressure-enhanced properties. We discuss the effect of pressure on structures and properties, their relationships and the underlying mechanisms. Finally, we give an outlook on future research avenues in which high pressure and related alternative methods such as chemical tailoring and interfacial engineering may lead to novel hybrid perovskites uniquely suited for high-performance energy applications.

中文翻译：

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压力引起的有机-无机卤化物钙钛矿的剧烈变化

有机-无机卤化物钙钛矿已经成为一种有前途的功能材料，适用于具有高性能和低成本的先进光伏和光电应用。已经采用了各种化学方法和加工方法来改变杂化钙钛矿的组成，结构，形态和电子性质。但是，仍然存在挑战，包括其稳定性，对环境不友好的化学药品的使用以及对结构与属性关系缺乏深刻的了解。另外，压力（一种可以显着改变功能性材料的原子和电子结构的基本热力学参数）已被广泛用于进一步理解结构-特性关系，并且还可以使给定材料具有新的或增强的性能。从这个角度出发，我们描述了高压钙钛矿杂化材料的最新研究进展，特别是在压力引起的新现象和压力增强特性方面。我们讨论了压力对结构和特性，它们之间的关系以及潜在机制的影响。最后，我们展望了未来的研究途径，其中高压和相关替代方法（例如化学剪裁和界面工程）可能会导致独特地适用于高性能能源应用的新型混合钙钛矿。我们讨论了压力对结构和特性，它们之间的关系以及潜在机制的影响。最后，我们展望了未来的研究途径，其中高压和相关替代方法（例如化学剪裁和界面工程）可能会导致独特地适用于高性能能源应用的新型混合钙钛矿。我们讨论了压力对结构和特性，它们之间的关系以及潜在机制的影响。最后，我们展望了未来的研究途径，其中高压和相关替代方法（例如化学剪裁和界面工程）可能会导致独特地适用于高性能能源应用的新型混合钙钛矿。