Two-dimensional halide perovskite as β-ray scintillator for nuclear radiation monitoring
Two-dimensional halide perovskite as β-ray scintillator for nuclear radiation monitoring
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DOI：
10.1038/s41467-020-17114-7
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发表时间：
2020-07-07
影响因子：
16.6
通讯作者：
Zeng, Haibo
中科院分区：
文献类型：
--
作者：
Yu, Dejian;Wang, Peng;Zeng, Haibo
随着核电在全球电力供应中发挥越来越重要的作用，确保核安全具有重要意义。射线监测是一种至关重要的方法，但用于射线探测的商用有机闪烁体存在高温失效和辐照损伤的问题。在这里，我们报道了一种基于二维卤化物钙钛矿的具有良好耐热性和辐照硬度的β射线闪烁体。进行了综合成分工程和掺杂，阐述了基本原理。在10 kGy（剂量率0.67 kGy h(-1)）的累积辐射剂量下，该闪烁体表现出令人满意的热猝灭和较高的分解温度，未出现功能衰减和迟滞现象。此外，二维卤化物钙钛矿β射线闪烁体还克服了众所周知的固有水不稳定性，并且具有低成本的水合成和优异的防水性能，从而为实际应用铺平了道路。
Ensuring nuclear safety has become of great significance as nuclear power is playing an increasingly important role in supplying worldwide electricity. beta-ray monitoring is a crucial method, but commercial organic scintillators for beta-ray detection suffer from high temperature failure and irradiation damage. Here, we report a type of beta-ray scintillator with good thermotolerance and irradiation hardness based on a two-dimensional halide perovskite. Comprehensive composition engineering and doping are carried out with the rationale elaborated. Consequently, effective beta-ray scintillation is obtained, the scintillator shows satisfactory thermal quenching and high decomposition temperature, no functionality decay or hysteresis is observed after an accumulated radiation dose of 10 kGy (dose rate 0.67 kGy h(-1)). Besides, the two-dimensional halide perovskite beta-ray scintillator also overcomes the notorious intrinsic water instability, and benefits from low-cost aqueous synthesis along with superior waterproofness, thus paving the way towards practical application.