Use of toluidine blue - diethylenetriaminepenta- aceticacid (TB - DTPA) system in photogalvanic cell for solar energy conversion

Toluidine blue (TB) has been used as photosensitizer in photogalvanic cell for solar conversion. DTPA was used as an electron donor. The photopotential and photocurrent generated by this cell were 120mV and 15pA, respectively. Effect of various parameters on the electrical output of the cell has been studied. Current voltage (i-V) characteristics of the cell has been also observed and a tentative mechanism for the generation of photocurrent in the photogalvanic cell has been proposed. Performance of the cell was determined in dark at its power point