Fig. 4: Architecture and performance of the single-pixel Sn–Pb perovskite photodetector.

a Structure diagram of the photodetector. b Current density–voltage characteristics of the fabricated photodetector under dark and 980 nm illumination. c EQE, d responsivity, e Specific detectivity of the photodetectors operated at zero bias. f Noise spectral density of the photodetectors. g LDR, h Transient response of the optimal photodetector (DPSO-modulated). i Specific detectivity and response time statistics of the representatively reported perovskite photodetectors. j Continuous on/off response current tracking of the optimal photodetector at the wavelength of 980 nm under zero bias for 50 min