The photoelectrochemical properties of phthalocyanine coated tin-oxide (SnO2) electrodes in the presence of several redox couples were investigated. The photovoltaic performances were optimized for Fe(CN)64−/3− and I2/I3− redox couples with respect to concentration, pH, counter electrode, and back contact. Under AM2 solar illumination the SnO2/x-H2Pc Fe(CN)64−/3− cells developed a photocurrent of 0.63 mA/cm2, photovoltage of 0.33 volts, fill factor of 0.25, and a power conversion efficiency of 0.07% to white light irradiation of 75 mW/cm2. The low efficiency of carrier collection was attributed to the high series resistance, surface recombination of carriers, and slow charge exchange at the counter electrode.