Exploring centimeter-sized single crystals of a 2D Dion–Jacobson halide perovskite toward efficient X-ray detection

A 2D halide perovskite (1) was syntheized. 1 shows semiconductor properties, such as a high resistivity (6.01 × 10 10 Ω cm) and a μτ product (6.21 × 10 −4 cm 2 V −1 ), a low LOD of 236 nGy air s −1 and a sensitivity of 270 μC Gy air −1 cm −2 at a 5 V bias.