Fig. 1: Exciton confinement in scintillators.
From: Atomically confined excitons in 2D perovskites for bright and sub-nanosecond scintillation

a Schematic of exciton confinement in various scintillators and the corresponding response time range. b Design concept of atomic-level exciton confinement in 2D perovskites by regulated in-plane tilting. c The summary of light yield and radioluminescence lifetime of commercial, state-of-the-art scintillators and our atomic-level confined excitonic 2D perovskite.