Three-dimensional nano-foam of few-layer graphene grown by CVD for DSSC
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- Three-dimensional nano-foam of few-layer graphene grown by CVD for DSSC
- Lee, Jung-Soo; Ahn, Hyo-Jin; Yoon, Jong-Chul; Jang, Ji-Hyun
- CHEMICAL-VAPOR-DEPOSITION; SENSITIZED SOLAR-CELLS; LARGE-AREA; COUNTER ELECTRODES; CARBON-FILMS; SINGLE-LAYER; EXFOLIATION; NETWORKS; SYSTEMS; PHASE
- Issue Date
- ROYAL SOC CHEMISTRY
- PHYSICAL CHEMISTRY CHEMICAL PHYSICS, v.14, no.22, pp.7938 - 7943
- We report a robust and direct route to fabricate a three-dimensional nano-foam of few-layer graphene (3D-NFG) with large area coverage via a chemical vapor deposition (CVD) technique. Pyrolysis of polymer/nickel precursor film under a hydrogen environment, simply prepared by spin-coating, leads to the creation of nano-foam in the film and the reduction process of nickel ions. Carbonized-C and the nickel nano-frame formed from the pyrolysis are used as a solid carbon source and as a catalyst for the growth of graphene under CVD conditions, respectively. We investigate the use of 3D-NFG, with the advantage of large surface area and high conductivity, as an alternative to the Pt counter electrode material in dye sensitized solar cells. The excellent properties of 3D-NFG, fabricated in this simple and direct manner, suggest a great potential for interconnected graphene networks in electronic devices and photocatalytic sensors as well as in energy-related materials.
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