Fig. 3. (a) Steady-state photoluminescence spectra of BiVO4 and BiVO4/VS-MoS2. (b and c) EIS plots and I–t curves of BiVO4, VS-MoS2, and BiVO4/VS-MoS2 plotted at a bias potential of −0.4 V vs. Ag/AgCl. AFM height images of (d) VS-MoS2 and (f) BiVO4/VS-MoS2. SPV images of (e) VS-MoS2 and (g) BiVO4/VS-MoS2 under illumination. (h) Potential difference changes (ΔCPD) of VS-MoS2 and BiVO4/VS-MoS2 by subtracting the potential under dark conditions from that under illumination. (i) Schematic illustration of the photogenerated carrier separation.
