(a) Current–voltage (I–V) characteristics of the studied photodetector illuminated by light at different power densities. (b) Energy band diagrams of the Au/CsPbBr₃/Au structure showing the generation, transfer, and collection processes of the photogenerated carriers. (c) Logarithmic plot of the photocurrent versus illumination power. The curve is well fitted using a power law. (d) Photoresponsivity (blck), specific detectivity (red), and EQE (blue) of the photodetectors versus the illuminated light irradiance.^[41]