Halide Perovskites and their Derivatives for Efficient, High-Resolution Direct Radiation Detection: Design Strategies and Applications
Halide Perovskites and their Derivatives for Efficient, High-Resolution Direct Radiation Detection: Design Strategies and Applications
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用于高效、高分辨率直接辐射检测的卤化物钙钛矿及其衍生物：设计策略和应用
DOI：
10.1002/adma.202304523
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发表时间：
2023
影响因子：
29.4
通讯作者：
Dudipala K
中科院分区：
文献类型：
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作者：
Dudipala K
在过去的十年中，基于卤化铅钙钛矿（LHP）的光电器件的性能迅速提高。这些材料的大迁移率寿命产品和缺陷容限对于光电子学至关重要，也使它们非常适合辐射探测器，特别是考虑到存在重元素，这对于强X射线和γ射线衰减至关重要。在过去的十年中，LHP厚膜、晶片和单晶已经产生了直接辐射探测器，这些探测器在灵敏度（报告值高达3.5 × 106µC Gyair−1cm−2）、探测极限（直接测量值低至1.5 nGyair −1）、沿着有竞争力的能量和室温下的成像分辨率方面优于现有技术。与此同时，无铅钙钛矿启发材料（例如，甲基碘化铋铵），其在太阳能电池中表现不佳，最近已经与之相匹配，并且在某些领域（例如，在偏振稳定性方面），超过了LHP探测器的性能。这些进步为实现更安全的医学成像设备以及更有效的安全、核安全或产品检测应用的非侵入性分析提供了机会。在本文中，讨论了LHP和钙钛矿材料探测器性能快速提升的原理，以及它们的特性和性能如何与非侵入性诊断中的关键应用联系起来。还讨论了设计这些材料的性能的关键策略，以及将这些新技术商业化所要克服的重要挑战。
The past decade has witnessed a rapid rise in the performance of optoelectronic devices based on lead‐halide perovskites (LHPs). The large mobility‐lifetime products and defect tolerance of these materials, essential for optoelectronics, also make them well‐suited for radiation detectors, especially given the heavy elements present, which is essential for strong X‐ray and γ‐ray attenuation. Over the past decade, LHP thick films, wafers, and single crystals have given rise to direct radiation detectors that have outperformed incumbent technologies in terms of sensitivity (reported values up to 3.5 × 106µC Gyair−1cm−2), limit of detection (directly measured values down to 1.5 nGyairs−1), along with competitive energy and imaging resolution at room temperature. At the same time, lead‐free perovskite‐inspired materials (e.g., methylammonium bismuth iodide), which have underperformed in solar cells, have recently matched and, in some areas (e.g., in polarization stability), surpassed the performance of LHP detectors. These advances open up opportunities to achieve devices for safer medical imaging, as well as more effective non‐invasive analysis for security, nuclear safety, or product inspection applications. Herein, the principles behind the rapid rises in performance of LHP and perovskite‐inspired material detectors, and how their properties and performance link with critical applications in non‐invasive diagnostics are discussed. The key strategies to engineer the performance of these materials, and the important challenges to overcome to commercialize these new technologies are also discussed.