Journal
ACS NANO
Volume 4, Issue 2, Pages 887-894Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nn901660v
Keywords
two-dimensional; graphene; photoanode; dye-sensitized solar cells; charge transport
Categories
Funding
- NSFC [90306011, 20774101]
- National Basic Research Program [2006CB806203, 2006CB932102, 2007CB936403]
- 863 Program [2007AA03Z327]
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As a novel two-dimensional (2D) material, graphene shows great benefits in electric and material science. Compared to 1D nanomaterials, it may show more excellent properties. Here, we introduced graphene as 2D bridges into the nanocrystalline electrodes of dye-sensitized solar cells, which brought a faster electron transport and a lower recombination, together with a higher light scattering. On the basis of these advantages, the short-circuit current density was increased by 45% without sacrificing the open-circuit voltage, and the total conversion efficiency was 6.97%, which was increased by 39%, comparing with the nanocrystalline titanium dioxide photoanode, and it was also much better than the 1D nanomaterial composite electrode.
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