The objective of this work was to increase the energy efficiency of photogalvanic cell using four dyes; Amido Black 10B, Bromocresol purple, Carmine and Biebrich scarlet as photosensitizers in Tween 60-Ascorbic acid system. Observed values of photopotential, photocurrent, fill factor, conversion efficiency and storage capacity for Tween 60 - Amido Black 10B - Ascorbic acid system were 996 mV, 420 µA, 0.38, 1.62%, 130 min, Tween 60 - Bromocresol purple - Ascorbic acid system were 811 mV, 65 µA, 0.50, 0.32%, 150 min, Tween 60 - Carmine - Ascorbic acid system were 844 mV, 190 µA, 0.43, 0.81%, 170 min. and Tween 60 - Biebrich Scarlet - Ascorbic acid system were 919mV, 210 µA, 0.41, 0.89%, 75 min, respectively. Comparative energy efficiency in all four systems studied in detail and all comparative data are discussed in the paper. Finally system with Amido black 10B and Carmine dyes was proposed as efficient system in view of solar energy conversion and storage.
Key words: Amido black 10B, bromocresol purple, carmine, biebrich scarlet, energy efficiency.
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