Fig. 2From: Metal Electrode-Free Halide Perovskite-Based Flexible Ultraviolet-C Photodetector with Large Areaa Schematic diagram of the device; b Cross-sectional image of the device; c Photograph of the corresponding device; and d Energy diagram illustrating the charge carrier transport in the halide perovskite photodetector under UV light [31,32,33,34]Back to article page