A HIGHLY EFFICIENT SOLAR CELL MADE FROM A DYE-MODIFIED ZNO-COVERED TIO2 NANOPOROUS ELECTRODE

摘要: A photoelectrochemical solar cell based on porous ZnO-covered TiO2 film has been fabricated with ruthenium bipyridyl complex as the sensitizer. The generated a short-circuit photocurrent of 21.3 mA cm-2 and an open-circuit voltage 712 mV under irradiation 81.0 mW white light from xenon lamp overall conversion efficiency 9.8%. Compared pure (anatase) film, possesses more outstanding ability to transport electrons power increase by 27.3%. Optical elctrochemical studies show that surface modification ZnO can concentration free in conduction band TiO2. This result implies charge recombination is reduced process electron through network, which decrease loss hence improve both photovoltage.