Metal halide perovskites are crystalline materials originally developed out of scientific curiosity. They have shown great potential as active materials in optoelectronic applications. In the last 6 years, their certified photovoltaic efficiencies have reached 22.1%. Compared to bulk halide perovskites, low-dimensional ones exhibited novel physical properties. The photoluminescence quantum yields of perovskite quantum dots are close to 100%. The external quantum efficiencies and current efficiencies of perovskite quantum dot light-emitting diodes have reached 8% and 43 cd A⁻¹, respectively, and their nanowire lasers show ultralow-threshold room-temperature lasing with emission tunability and ease of synthesis. Perovskite nanowire photodetectors reached a responsivity of 10 A W⁻¹ and a specific normalized detectivity of the order of 10¹² Jones. Different from most reported reviews focusing on photovoltaic applications, we summarize the rapid progress in the study of low-dimensional perovskite materials, as well as their promising applications in optoelectronic devices. In particular, we review the wide tunability of fabrication methods and the state-of-the-art research outputs of low-dimensional perovskite optoelectronic devices. Finally, the anticipated challenges and potential for this exciting research are proposed.

金属卤化物钙钛矿是最初出于科学好奇心而开发的结晶材料。它们已显示出在光电应用中作为活性材料的巨大潜力。在过去的6年中，其认证的光伏效率已达到22.1％。与块状卤化物钙钛矿相比，低维钙钛矿显示出新颖的物理性质。钙钛矿量子点的光致发光量子产率接近100％。钙钛矿量子点发光二极管的外部量子效率和电流效率分别达到了8％和43 cd A ^-1，并且它们的纳米线激光器显示出具有发射可调性和易于合成的超低阈值室温激光。钙钛矿纳米线光电探测器的响应度达到10 A W ^-1特定的归一化探测灵敏度约为10 ¹² Jones。与大多数针对光伏应用的报道有所不同，我们总结了低维钙钛矿材料及其在光电子设备中的应用前景的研究进展。特别是，我们回顾了制造方法的广泛可调性以及低维钙钛矿光电器件的最新研究成果。最后，提出了这项激动人心的研究的预期挑战和潜力。