Studies on storage photoelectrochemical cell consisting of phenazine dye-EDTA and different redox couples

A new type of photoelectrochemical cell has been developed using phenazine dye and EDTA aqueous solution and aqueous solution of different redox couples separated by a Pyrex sintered glass membrane (porosity G-4). The different phenazine dyes used are phenosafranin. safranin-O, safranin-T, and neutral red. The redox couples used are Cu+Cu2+, Fe(CN)64−Fe(CN)63−, I−I2, and solFe2+Fe3+. An interesting observation is that the growth of maximum photovoltage takes 15–25 min, whereas the decay to the original dark voltage requires two to three days. Cell characteristics such as open-circuit voltage, short-circuit current, fill factor, power efficiency, and solar energy efficiency have been determined.