Proceedings of MATSUS Spring 2025 Conference (MATSUSSpring25)
DOI: https://doi.org/10.29363/nanoge.matsusspring.2025.132
Publication date: 16th December 2024
In recent decades, lead halide perovskite nanocrystals (PNCs) have emerged as promising high-atomic-number scintillating materials for next-generation scintillators and photodetectors in ionizing radiation detection. Their strong light-matter interaction, tunable radioluminescence, and solution processability position them as key candidates for advanced applications. However, preserving their luminescence while ensuring environmental stability remains a challenge. Innovative strategies for embedding PNCs in impermeable host matrices have been developed [1], These approaches preserve the luminescence properties of the NCs in harsh environments and also prevent Pb dispersion, thus enabling their safe use in biological applications. On the one hand, study reveals the crucial parameters in the design of scintillation detector on isolated NC level [2] Here, we explore innovative embedding strategies using mesoporous silica to enhance PNC stability and performance. By spatially engineering PNCs, we can manipulate their collective scintillating behaavior, leading to cascading scintillation effects while maintaining a low overall lead content. Also, we propose a design of bismuth-loaded PNC plastic scintillator for gamma and neutron detection. Given that bismuth is known to quench the photoluminescence (PL) of perovskites instantaneously, to the best of our knowledge, our work is the first to successfully integrate perovskites with bismuth in a scintillation system, demonstrating a novel approach that overcomes the challenge and advancing perovskites’ potential for.broader radiation detection technologies.
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