The current-voltage characteristics of semiconductor-electrolyte junction photovoltaic cells

Equations are derived giving the current-voltage characteristics of photovoltaic cells based on the semiconductor-electrolyte junction. Recombinations in the neutral region and space-charge region are included. It is shown that the rate-limiting effect of charge transfer across the interface enhances the recombination rate in these regions with increasing voltage, thereby reducing the fill factor. Significant differences in the behavior of these cells and other photovoltaic cells are pointed out.