- P-ISSN 1225-0163
- E-ISSN 2288-8985
In the process of solar energy conversion into electrical energy using the photoelectrochemical cell containing the sensitizer, rose bengal and supersensitizer. <TEX>$I^-$</TEX>, the photocurrent is stabilized and durable. But the long time span of irradiation causes the decrease of photocurrent monotonically. Spectroscopic and electrochemical analyses of rose bengal solution containing <TEX>$I^-$</TEX> revealed that the decrease of concentration of rose bengal was attributed to the reaction of rose bengal in the dark with <TEX>$I_2$</TEX> formed as a result of the possible photocatalytic reaction of rose bengal with <TEX>$I^-$</TEX>.