AC conductivity of nanoporous metal-oxide photoanodes for solar energy conversion
نویسندگان
چکیده
The temperatureand frequency-dependent ac conductivity of nanoporous metal-oxide semiconductors commonly used in technologies for solar photoconversion is analyzed using a model based on fluctuation-induced tunneling conduction (FITC). The model takes into account the potential barriers at the regions of nanoparticle contact that limit electron transport. In contrast to previous models, quantitative agreement is found with the FITC model with a single set of parameters over the entire temperature range studied. Guidelines for the design of new materials for dye-sensitized solar cells (DSSCs) and solar photocatalysis are discussed.
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