【摘 要】
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In photoelectrochemical(PEC)cells,there exists a competition between transport of electrons through theporous semiconductor electrode toward the conducting substrate and back reaction of electrons tor
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In photoelectrochemical(PEC)cells,there exists a competition between transport of electrons through theporous semiconductor electrode toward the conducting substrate and back reaction of electrons torecombine with oxidized species on the semiconductor-electrolyte interface.which determines the chargecollection efficiency and is strongly influenced by the density and distribution of electronic states inbandgap and geometrical structure of the semiconductors.TiO2 nanostructures are by far the most widelyadopted semiconductor in PEC applications owing to its special electrical and optical properties that couldoffer promising electronic process behaviors in photovoltaic devices,water splitting cells.and etc.
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