Manganese-molybdenum-diethyldithiocarbamate [MnMoO2(Et(2)dtc)(4)(H2O)] {Et(2)dtc = diethyldithiocarbamate} complex has exhibited reversible photogalvanic behaviour in aqueous dimethylformamide medium when studied in a Honda cell. The photogalvanic behaviour has been further investigated by varying the pH, temperature and photosensitizers. UV, visible and sunlight were used as the radiation sources. A maximum potential of 345 mV was obtained at 80 degrees C in visible light. The system was found to be reversible for several cycles. A photoelectrochemical cell was constructed by coupling a charged nickel electrode with the complex electrode which incorporates the experimental compound in acetylene black on a nickel substrate. A maximum potential of 1.08 V with 80 mu A current was obtained when irradiated with tungsten lamp.