Anomalous Photovoltaic Effect in a Chiral Alternating‐Cation Intercalation‐Type Perovskite for Efficient Self‐Driven X‐Ray Detection

at zero bias, surpassing most existing self-powered X-ray detectors. These findings underscore the potential of radiation-responsive APV effects in advanced self-driven X-ray detection and pave the way for future practical applications.