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Advanced Materials

Understanding TiO2 Size-Dependent Electron Transport Properties of a Graphene-TiO2 Photoanode in Dye-Sensitized Solar Cells Using Conducting Atomic Force Microscopy

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Abstract

Conducting AFM reveals a continuous conduction network of a TiO2-graphene composite in DSSC due to a more intimate contact between the smaller sized TiO2-graphene composite nanosheets,which reduces the internal resistance at TiO2/TiO2 and TiO2/FTO interfaces and ultimately leads to a faster and more efficient electron transport in the photoanode.

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