Perovskites: A New Star in X-ray Detection

You might have heard of perovskites, those amazing materials that could revolutionize solar panels. But there's a special type of perovskite called quasi-2D DJ type that's stealing the spotlight in another area: X-ray detection. These materials have incredible properties for detecting X-rays, but they come with some problems like phase segregation and tiny crystal sizes.In a recent study, scientists found a clever way to grow large single crystals of this special perovskite. They used temperature-controlled crystallization to create (3AMPY)(MA)Pb2Br7. The results were impressive: the X-ray detector had high resistivity (1. 78 × 109 Ω cm), a carrier mobility-lifetime product of 9. 32 × 10-4 cm2 V-1, a low dark current (5. 6 × 10-8 A cm-2 V-1), and a sensitivity of 129. 86 μC Gy-1 cm-2. These findings show that quasi-2D DJ type perovskites could be the key to high-performance X-ray detection. But the story doesn't end there. This study also gives us clues on how to improve crystal growth for other optoelectronic applications.