Fig. 8: Space charge layer and charge dynamics on BiVO₄.
From: Fundamentals and environmental applications of bismuth vanadate through photoelectrocatalysis
a Formation of the space charge layer (SCL) at the semiconductor−solution interface. b Charge transfer rate constant (red) and recombination rate constant (black) for unmodified (open symbols) and CoPi-modified BiVO4 (closed symbols). The error bars represent the variability in measurements for different samples at selected potentials. In total, three bare BiVO4 electrodes and two BiVO4/CoPi electrodes were analyzed. Figure and description adapted from Zachäus et al.196.
