Two-dimensional hybrid double perovskite (PA)4AgBiBr8 single crystals for X-ray detection

Lead-free double perovskite has become a candidate material for green optoelectronic applications due to its low toxicity and human-friendly characteristics. Double perovskite has a huge application prospect in the field of optical detectors, especially X-ray detection in recent years. By introducing propylammonium (PA), we have grown a larger size 2D double perovskite (PA) 4 AgBiBr 8 single crystal . While inheriting the high stability of the 2D material , it also exhibits good X-ray response. The constructed planar Au/(PA) 4 AgBiBr 8 /Au X-ray detector displays a sensitivity of 6.89 μC Gy −1  cm −2 under 40 V bias voltage and 40 keV X-ray radiation.