Fig. 5: Bias-dependent PHJ OPDs device performance.

Photocurrent densities versus light intensity under (a) Short circuit (0 V) and (b) −1 V bias conditions. Normalized transient photo current under (c) 0 V and (d) −1 V by illuminating the devices by a green laser diode (523 nm) with estimated light intensity of 4.22 mW cm−2.