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Adv Mater. 2013 Dec 17;25(47):6900-4. doi: 10.1002/adma.201303327. Epub 2013 Oct 1.

Understanding TiO(2) size-dependent electron transport properties of a graphene-TiO(2) photoanode in dye-sensitized solar cells using conducting atomic force microscopy.

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1
School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, 637459, Singapore.

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.

KEYWORDS:

conducting atomic force microscopy; dye-sensitized solar cell; graphene-TiO2; nanoscale electronic properties; size-dependent charge transport

PMID:
24114931
DOI:
10.1002/adma.201303327
[Indexed for MEDLINE]
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