Plastic-Free X-ray Scintillation Film Using Eco-Conscious Low-Toxic Halide Perovskite and Wood
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Since the invention of the scintillator for X-ray detection in 1895, continuous improvements to increase the efficiency of X-ray scintillation materials have been developed for a variety of applications. Lead-free all-inorganic halide perovskite can be good candidates for the recent green X-ray scintillator. In this study, the delignified natural wood films with a spring-like microstructure are used for flexible indirect X-ray scintillation films, instead of conventional polymer. Inspired by these porous-lamellar microstructures of transparent delignified wood, we have demonstrated for the first time a simple concept for a breakthrough in biomass-based flexible X-ray scintillation without synthetic polymers. The zero-dimensional (0D) Cs3Cu2I5 perovskite as a radioluminescent material because of its nontoxic elements, low cost, good air-stability, high photoluminescence quantum yield (90 to 60%), stable, and wide band gap.