Abstract
Tin oxide (SnO2) nanostructures were synthesized by simple chemical precipitation route and SnO2 photoelectrode films were fabricated on fluorine doped SnO2 substrate. Using Rose Bengal dye as a sensitizer, scanning electron microscopic analysis was performed for the unsensitized and sensitized SnO2 photoelectrodes to study the changes in surface morphology. Optical absorption studies for Rose Bengal dye in solution and the photoelectrodes sensitized with it were conducted using UV–vis spectrophotometer. Effects of dye loading time on photovoltaic characteristics of the cell fabricated using the sensitized photoelectrode were studied. The highest performance of device was obtained for the photoelectrode with 24 h dye loading time which showed the V OC , J SC and FF of about 385 mV, 0.874 mA/cm2 and 78 %, respectively.
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