Single‐Crystal Perovskite High‐Energy Radiation Detectors: From Bulk Crystals to Micro/Nano Integration

ABSTRACT High‐energy radiation detection has various applications in medical imaging, industrial testing, and other fields. However, detectors made from traditional semiconductor materials struggle to meet the demands of modern applications, such as flexible wearable devices and low‐cost, miniaturized detectors. To address this issue, single‐crystal perovskite materials have been applied in the manufacturing of high‐energy radiation detectors, owing to their enhanced optoelectronic properties and low‐cost integration method. However, no review specifically discusses the relationship between crystal dimensionality, crystallinity, morphology modulation, and the performance of high‐energy radiation detectors. In this review, we first systematically overview the relationship between crystal dimensionality, crystallinity, morphology modulation, and device performance in high‐energy radiation detection. Then, the working mechanism and performance parameters of high‐energy radiation detectors are thoroughly discussed. Furthermore, the fabrication techniques for bulk and micro/nano single‐crystal perovskite are highlighted, and the influence of the nucleation and crystallization process on the fabrication of single crystals is also discussed. Moreover, the advances in high‐energy radiation detectors based on single‐crystal perovskite are systematically reviewed. Finally, the remaining challenges and future research prospects are presented. A detailed review of the development of perovskite single‐crystal high‐energy radiation detectors will inspire more researchers to join this field and highlight directions for the future.