In Situ-Grown Ligand-Free Perovskite Nanocrystals in a Polymer Membrane for Flexible and Dynamic X-ray Imaging

nanocrystals as both X-ray active species and light-emitting centers has excellent performance in spatial resolution and is compatible with flexible and dynamic X-ray imaging. Our synthetic strategy is universal to various types of nanocrystals and permits potential applications in diverse optoelectronic devices.