CsPbBr3 Single Crystal X-ray Detector with Schottky Barrier for X-ray Imaging Application

A high Z CsPbBr3 halide perovskite with large charge carrier diffusion length was used for radiation detection applications. The high sensitivity X-ray detector is expected to be used for imaging applications. The free-seeding CsPbBr3 single crystals (SCs) were directly grown on ITO glass. We fabricated the Ag/CsPbBr3/ITO sandwich structural X-ray detector with Schottky contact at room temperature. We investigated the X-ray detection and phase-contrast X-ray imaging of the all-inorganic halide perovskite CsPbBr3 SCs. The devices exhibit high performances with low dark current density (similar to 5-27 nA/cm(2)) and high sensitivity (770 mu C.Gy(-1).cm(-2)) with an applied voltage of 8 V. An L-shape imaging was obtained based on the CsPbBr3 SC X-ray detector array, which makes it a promising application for pixel X-ray imaging techniques.