Oxide perovskite Ba2AgIO6 wafers for X-ray detection

X-ray detection is of great significance in biomedical, nondestructive, and scientific research. Lead halide perovskites have recently emerged as one of the most promising materials for direct X-ray detection. However, the lead toxicity remains a worrisome concern for further commercial application. Great efforts have been made to search for lead-free perovskites with similar optoelectronic properties. Here, we present a lead-free oxide double perovskite material Ba 2 AgIO 6 for X-ray detection. The lead-free, all-inorganic nature, as well as the high density of Ba 2 AgIO 6 , promises excellent prospects in X-ray applications. By employing the hydrothermal method, we successfully synthesized highly crystalline Ba 2 AgIO 6 powder with pure phase. Furthermore, we prepared Ba 2 AgIO 6 wafers through isostatic pressure and built X-ray detectors with Au/Ba 2 AgIO 6 wafer/Au photo-conductive structure. The as-prepared X-ray detectors showed a sensitivity of 18.9 µC/(Gy air ·cm 2 ) at 5 V/mm, similar to commercial α-Se detectors showcasing their advantages for X-ray detection.