1 Introduction Dynamic X-ray imaging is crucial for capturing real-time structural and functional changes, which find broad applications in medical diagnostics (e.g., cardiovascular and respiratory monitoring), nondestructive testing, and in situ studies of material dynamics.[1-6] Real-time X-ray imaging demands scintillators with the following critical attributes: 1) ultrafast radioluminescence (RL) decay dynamics to suppress motion-induced image artifacts; 2) excellent structural integrity...
