Organic–inorganic hybrid perovskites have attracted tremendous attention due to the unprecedented success in the field of photovoltaics over the past few years. With a deeper understanding of their opto-electronic properties and the elucidation of the materials' structure–property relationships, perovskites and their composites used in other platforms have been increasingly reported, including in light emitting diodes, lasers, photodetectors, memory devices etc. In this review, we present the current status and recent advances in photodetectors based on perovskites and perovskite composites and discuss the molecular engineering of perovskite systems introduced in photodetection. This review mainly covers (i) the modulation of the fundamental properties via molecular design and mastering the materials' composition, (ii) miniaturization and functionalization, (iii) the spectral tunability of perovskite photodetectors and (iv) hard radiation detection. All these achievements and recent progress in device performance are correlated with the materials' versatility and the tunability of properties. We also point out the open challenges facing perovskite photodetectors for manufacturing and real-world applications, followed by future directions which are promising to explore and require more research efforts.

中文翻译：

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钙钛矿光电探测器的分子工程：材料和器件的最新进展

由于过去几年在光伏领域的空前成功，有机-无机杂化钙钛矿引起了极大的关注。随着对它们的光电特性的深入了解以及对材料结构-性能关系的阐明，在其他平台上使用的钙钛矿及其复合材料的报道越来越多，包括发光二极管，激光器，光电探测器，存储设备等。在这篇综述中，我们介绍了基于钙钛矿和钙钛矿复合材料的光电探测器的现状和最新进展，并讨论了光电探测中引入的钙钛矿系统的分子工程。这次审查主要涵盖（i）通过分子设计和掌握材料的成分，（ii）小型化和功能化，（iii）钙钛矿光电探测器的光谱可调性和（iv）硬辐射探测。所有这些成就和器件性能的最新进展与材料的多功能性和性能的可调性相关。我们还指出了钙钛矿光电探测器在制造和实际应用中面临的开放挑战，其次是未来的方向，有望探索并需要更多的研究工作。