Fig. 4
Basic operation parameters of the solid-state PD for dual-wavelength photodetection. (a) PC density, (b) responsivity and EQE, and (c) specific detectivity as a function of the 650-nm red and 520-nm green illumination power density. (d) PC density under 450, 520, 635 and 808-nm blue to near-infrared illumination with 10 mW/cm2 illumination power density. (e,f) PC time traces for 650-nm red illumination and 520-nm green illumination. The rise and decay times are indicated.
