Fig. 3. (a) I–V characteristics of the device under dark and various light intensities, inset: the working principle of the photodetector. (b) I–t curves at 5 V of the device under 1064 nm irradiation with different light intensities. (c) I–t curves at 10.65 mW mm−2 of the device under different voltages (1–5 V). (d) Fitting curve and calculated responsivity of the device under various light intensities (e) cycling stability measurement of the device.
