Figure 9
(a) Schematic illustration of the fabricated photodetector. The I-V curves of the NR-BM (Inset of Fig. 8b for NR-Bi2S3) photodetectors illuminated by 650 nm with (b) 1.0 mW/cm2 and (c) different incident light intensity. Inset of Fig. 8c is the photocurrent measured versus light density at a bias voltage of 0.1 V. (d) The time dependent of the on-off photocurrent response of the device at a bias of 1 V by 650 nm illumination.
