Flexible Wood-Based X-Ray Scintillator Film Using Lead-Free Cs3Cu2I5 Perovskite Nanoparticles

초록

The prevalent use of unsustainable polymers in current X-ray scintillators poses a significant environmental concern. The advancement of biodegradable X-ray scintillators holds promise in mitigating escalating environmental issues tied to electronic or medical waste and carbon footprints. Herein, a biodegradable and flexible X-ray scintillation film is presented employing lead-free 0D Cs3Cu2I5 perovskite nanoparticles integrated into densified-delignified wood (Cs3Cu2I5@D-Wood). The Cs3Cu2I5@D-Wood film demonstrates precise and detailed X-ray imaging capabilities, achieving a high spatial resolution of 10 line pairs per millimeter (lp·mm). To minimize the environmental impact associated with disposal, metal and halide ions (e.g., Csþ, Cuþ, I) from Cs3Cu2I5@ D-Wood can be easily retrieved by a simple solvent extraction process. The approach showcases the potential of biodegradable wood-based X-ray scintillation screens as alternatives to conventional, plastic-based screens. This offers a significant contribution to environmental sustainability by reducing electronic or medical waste.

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