One-dimensional lead-free perovskite single crystals with high X-ray response grown by liquid phase diffusion

A liquid phase diffusion method has been developed. Adopting this method, large-sized lead-free hybrid perovskite (1,5-pentanediamine)BiI 5 single-crystals were obtained, exhibiting a high X-ray response sensitivity of 8120 μC Gy air −1 cm −2 at −80 V.