Fig. 2. The design of the electrode structure for the vertical matrix detector.

a The thickness-attenuation curve of MAPbBr₃ under different X-ray energy. b The thickness required for every 20% X-ray intensity attenuation under different energy. c Schematic diagram of the strip electrodes etched by laser marking, and the SEM picture of them in the enlarged view. d I–V curves of Au–PSC–Ag device and Au–PSC–C₆₀-Ag device in the darkness. The inset is the energy level diagram of Au–PSC–C₆₀-Ag device