Fig. 4: Upper limits of the specific detectivity D* in OPDs.
From: Mid-gap trap state-mediated dark current in organic photodiodes
The estimated upper limit of D* assuming noise governed by ishot generated by J0 (from Fig. 3b) for the BHJs studied in this work (triangles, square and circles) and narrow-gap systems from the literature (stars). The red solid line corresponds to the expected trend of the upper limit of D* when mid-gap transitions dominate, calculated based on the red solid line in Fig. 3b (the shaded area represents the corresponding shaded area in Fig. 3b). The blue line marks the BLIP limit.
