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Perovskite Scintillators for Improved X-ray Detection and Imaging

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2023)

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Summary: A rational design strategy is presented to shorten the scintillation decay time by maximizing the dielectric difference in 2D organic-inorganic hybrid perovskites. Inserting benzimidazole (BM) with low dielectric constant between [PbBr6](2-) layers significantly enhances the exciton binding energy and reduces the emitting decay time to 0.97 ns with a high light yield of 3190 photons MeV-1. This material shows excellent performance in gamma-ray, neutron, and alpha-particle detection, as well as the best coincidence time resolution compared to the reference sample.

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Nanocrystals of metal halide perovskites and their analogues as scintillators for x-ray detection

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Summary: Metal halide perovskite nanocrystals and their analogues show great potential as x-ray scintillators due to their low manufacturing cost, fast decay time, and room temperature scintillation. However, further research and development are needed to address the challenges for industrialization.

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Evaluation of scintillation properties of organic-inorganic perovskite compounds-(C6H5C2H4NH3)2Pb1-x Ni x Br4

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Atanu Jana et al.

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Katelyn A. Dagnall et al.

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Oriented-Structured CsCu2I3 Film by Close-Space Sublimation and Nanoscale Seed Screening for High-Resolution X-ray Imaging

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Summary: The all-inorganic lead-free halides Cs-Cu-I system, consisting of Cs3Cu2I5 and CsCu2I3, has been attracting attention for their good photophysical characteristics, with potential applications in light-emitting devices. This study focuses on the CsCu2I3 compound and its use in X-ray scintillator detectors, leveraging its one-dimensional crystal structure, congruent-melting feature, and high spectral matching to photosensors. By utilizing an oriented nanorod structure and novel fabrication techniques, a CsCu2I3 detector achieved high spatial resolution of 7.5 Ip mm(-1) in X-ray imaging.

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Non-Hygroscopic, Self-Absorption Free, and Efficient 1D CsCu2I3 Perovskite Single Crystal for Radiation Detection

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Summary: The novel inorganic CsCu2I3 single-crystalline perovskite is a nonhygroscopic and efficient X-ray and gamma-ray scintillator, featuring a one-dimensional structure with a large Stokes shift. It exhibits extremely low afterglow levels and high light yield under X-ray and gamma-ray excitation. The photophysics of CsCu2I3 crystal was studied through temperature dependent photoluminesence spectra and decay kinetics measurements, showing its potential for various applications in radiation detection and imaging.

ACS APPLIED MATERIALS & INTERFACES (2021)

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Metal Halide Perovskites for X-ray Imaging Scintillators and Detectors

Yang Zhou et al.

Summary: Metal halide perovskite materials show promising potential in X-ray imaging and detection due to their high absorption cross sections and excellent optical and electrical properties. Future research should focus on addressing remaining technical challenges to enable broader applications of perovskite-based X-ray technologies.

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