Sensing and Memory Integrated X-ray Detector Made of Hydrion-Conductive Perovskite with Anisotropic Response

X-ray detectors that integrate sensing and memory into a single system can effectively reduce the data volume, providing more space for improving the detection sensitivity and spatial resolution. However, materials that can simultaneously detect X-rays and store the information were lacking. Inspired by the principles of neural system functioning in biology, we created reconfigurable internal polarity in hydrion-conductive perovskites utilizing protons migrating along hydrogen-bond networks by disrupting and reforming hydrogen bonds. The pronounced anisotropy of low-dimensional perovskite optimized carrier migration pathways and effectively suppressed cross-talk between proton and photoinduced carriers in the transverse direction, thereby enabling efficient detection and memory. The assembled X-ray detector exhibited sensitive X-ray response with extra-high resistivity (1.17 × 10¹³ Ω cm), which is the highest among all of the memory materials while maintaining extended retention time (91 s). This innovative perovskite material can seamlessly integrate X-ray sensing and memory into a single device unit, effectively solving the challenges of data memory and X-ray recognition efficiency.