Publication date: 15th December 2025
Lead-halide perovskite nanocrystals are emerging as a promising platform for next-generation scintillators, combining high light yield with sub-nanosecond timing and access to collective quantum-optical regimes. This talk presents a materials-by-design approach in which CsPbBr₃ nanocrystals are integrated into high-Z and mesostructured hosts to suppress defect-mediated degradation while preserving ultrafast radiative kinetics. Sensitization with heavy oxide nanoparticles such as HfO₂ enhances energy deposition and charge generation under ionising radiation, effectively decoupling absorption from emission. Weak quantum confinement yields giant oscillator strengths that reconcile brightness and speed. At higher levels of ordering, nanocrystal superlattices exhibit scintillation superfluorescence, converting stochastic ionisation cascades into deterministic picosecond light bursts. Plasmonic coupling between metallic nanoparticles and polyconjugated emitters sensitized by high-Z particles enables Purcell-enhanced scintillation with accelerated radiative decay.Together, these advances point toward nanoscintillators with light yields and timing resolutions approaching a few tens of picoseconds, with implications for time-of-flight imaging, high-energy physics and precision dosimetry.
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