Fig. 2: Spectral selective responses.
From: Dual-mode narrowband organic photodetectors for self-aligned imaging in NIR-I and NIR-II
Schematic diagrams illustrate the spectral selective responses of the dual-mode narrowband OPD: a under forward bias, with the front junction responding to the short wavelength part of the incoming light, and b under reverse bias, with the rear junction responding to the long wavelength part of the incoming light.
