Li Yumin, Lei Yutian, Wang Haoxu, Jin Zhiwen
School of Physical Science and Technology and Lanzhou Center for Theoretical Physics and Key Laboratory of Theoretical Physics of Gansu Province, Lanzhou University, Lanzhou, 730000, People's Republic of China.
Nanomicro Lett. 2023 May 20;15(1):128. doi: 10.1007/s40820-023-01118-1.
Metal halide perovskites have recently emerged as promising candidates for the next generation of X-ray detectors due to their excellent optoelectronic properties. Especially, two-dimensional (2D) perovskites afford many distinct properties, including remarkable structural diversity, high generation energy, and balanced large exciton binding energy. With the advantages of 2D materials and perovskites, it successfully reduces the decomposition and phase transition of perovskite and effectively suppresses ion migration. Meanwhile, the existence of a high hydrophobic spacer can block water molecules, thus making 2D perovskite obtain excellent stability. All of these advantages have attracted much attention in the field of X-ray detection. This review introduces the classification of 2D halide perovskites, summarizes the synthesis technology and performance characteristics of 2D perovskite X-ray direct detector, and briefly discusses the application of 2D perovskite in scintillators. Finally, this review also emphasizes the key challenges faced by 2D perovskite X-ray detectors in practical application and presents our views on its future development.
由于其优异的光电性能，金属卤化物钙钛矿最近已成为下一代X射线探测器的有前途的候选材料。特别是，二维（2D）钙钛矿具有许多独特的性质，包括显著的结构多样性、高生成能和平衡的大激子结合能。凭借二维材料和钙钛矿的优势，它成功地减少了钙钛矿的分解和相变，并有效地抑制了离子迁移。同时，高疏水性间隔层的存在可以阻挡水分子，从而使二维钙钛矿具有优异的稳定性。所有这些优点在X射线检测领域引起了广泛关注。本文综述了二维卤化物钙钛矿的分类，总结了二维钙钛矿X射线直接探测器的合成技术和性能特点，并简要讨论了二维钙钛矿在闪烁体中的应用。最后，本文还强调了二维钙钛矿X射线探测器在实际应用中面临的关键挑战，并对其未来发展提出了我们的看法。
