Studies of effect of heterocyclic dyes in photogalvanic cells for solar energy conversion and storage: NaLS–ascorbic acid system

The photogalvanic effect has been studied in three systems using photogalvanic cells and NaLS–ascorbic acid–azur A, NaLS–ascorbic acid–azur B, NaLS–ascorbic acid–azur C systems. The photopotential and photocurrent generated by these systems are 770.0,971.0,623.0mV and 160.0,185.0,145.0 mA respectively. The effects of different parameters on the electrical outputs of the cell have been observed and current–voltage characteristics of the cell studied, and a mechanism has been proposed for the generation of photocurrent in photogalvanic cells. The conversion efficiencies for azur A, azur B and azur C are 0,5461, 0,9646 and 0,4567% and storage capacity 110, 135 and 95 min respectively.