Lead halide perovskite single crystals have emerged as promising candidates for high-performance optoelectronic devices because of their superior optoelectronic properties. To date, much literature has reported the fabrication of various perovskite single-crystal structures. However, it still lacks effective rationalization and a comprehensive understanding of the relationship between the structural characteristics and functional properties of the perovskite single crystals, which is of great significance for fabricating perovskite single crystals-based high-performance optoelectronic devices. In this review, we give a comprehensive overview of the synthesis of perovskite single crystals with diverse dimensions, including 0D perovskite quantum dots (QDs), 1D micro/nanowires, 2D micro/nanoplates and single-crystal thin films (SCTFs), and 3D micro/nanoscale single-crystal structures. The relationship between the dimensional structure and properties of the perovskite single crystals is discussed in detail. Dimensional requirements for different optoelectronic applications are systematically summarized. Finally, perspectives on remaining challenges and future opportunities are highlighted.

卤化铅钙钛矿单晶因其优异的光电性能而成为高性能光电器件的有前途的候选者。迄今为止，许多文献报道了各种钙钛矿单晶结构的制造。然而，对钙钛矿单晶的结构特征和功能特性之间的关系仍缺乏有效的合理化和全面的认识，这对制备基于钙钛矿单晶的高性能光电器件具有重要意义。在这篇综述中，我们全面概述了具有不同尺寸的钙钛矿单晶的合成，包括 0D 钙钛矿量子点 (QD)、1D 微/纳米线、2D 微/纳米板和单晶薄膜 (SCTF)，和 3D 微/纳米级单晶结构。详细讨论了钙钛矿单晶的尺寸结构与性能之间的关系。系统总结了不同光电应用的尺寸要求。最后，强调了对剩余挑战和未来机遇的看法。