X-Ray Real-Time Imaging and Delayed Imaging from Lead-Free Perovskite Scintillators

X-ray detection is vital in various fields such as medical imaging, security screening, and materials analysis. However, to meet the diverse detection requirements across different scenarios, current scintillators used for X-ray detection encounter challenges in both immediate and delayed radiation detections. In this work, flexibly controlling trap distribution through extra ions doping into Cs 2 NaTbCl 6 lead-free perovskites presents a promising avenue for addressing these challenges and advancing X-ray dose detection capabilities across diverse scientific domains. By doping Sb 3+ ions into the Cs 2 NaTbCl 6 host, the traps are significantly passivated through improved crystallinity, resulting in the suppression of afterglow behaviors and endowing the high-resolution real-time dynamic X-ray detection. Additionally, the incorporation of Mn 2+ into the Cs 2 NaTbCl 6 matrix causes significant lattice distortion, leading to increased concentrations of both shallow and deep traps, effectively boosting delayed X-ray detection efficiency. This work may provide an effective strategy for constructing efficient scintillators for the realization of multi-environmental X-ray imaging.