SEARCH Articles Figures Tables A schematic representation of a photoelectrochemical cell. A, B, and C are counter electrode, electrolyte, and semiconductor electrode, respectively. Ri is used to vary the potential flowing across two electrodes. [Publishers Imprint] See Also: A schematic representation of a photoelectrochemical cell. A, B, and C are counter electrode, electrolyte, and semiconductor electrode, respectively. Ri is used to vary the potential flowing across two electrodes.