Hydrophobic long‐chain two‐dimensional perovskite scintillators for underwater X‐ray imaging

Abstract The underwater X‐ray imaging technology development is significant to subaqueous target reconnaissance/detection/identification, subfluvial archaeology, submerged resource exploration, etc. As the core of X‐ray imaging detection, the scintillator has been plagued by inherent moisture absorption and decomposition, and strict requirements for seamless packaging and waterproofing. Here, we designed a manganese‐doped two‐dimensional (2D) perovskite scintillator modified by hydrophobic long‐chain organic amine through the combination of component and doping engineering. The modified perovskites show high water repellency that can be used as an underwater X‐ray scintillator. X‐ray images of aquatic organisms or other objects with a high spatial resolution of 10 lp·mm −1 at a big view field (32 mm × 32 mm) were obtained by scintillation screen. This hydrophobic perovskite scintillator based on molecular design is of great promise in underwater X‐ray nondestructive testing technology development.