Single-layer graphite oxide can be viewed as an unconventional type of soft material and has recently been recognized as a promising material for composite and electronics applications. It is of both scientific curiosity and technical importance to know how these atomically thin sheets assemble. There are two fundamental geometries of interacting single layers: edge-to-edge and face-to-face. Such interactions were studied at the air-water interface by Langmuir-Blodgett assembly. The liquid surface dopisited assembly technique is used to transfer the GO monolayers onto a substrate layer-by-layer. By dispersion graphene or graphene oxide on organic solvent/water,and dropping on water, which the surface pressure and pulling speed form assembly, the film density and the formation of wrinkling can be tailored to produce different topological features. We fabricate flexible transparent graphene film on PET as substrate and preparation of large area graphene film (GFs) with the new technological praocess. The transparent conductors made from reduced graphene oxide sheets show a high conductivity with sheet resistance of 679 O/sq at about transmittance of 90% (2 or 3 layers). The graphite oxide monolayers or Multilayers can be chemically reduced to graphene film for electronic applications such as transparent conducting thin films. The technique used in this work to produce transparent conductive rGO thin films is facile, inexpensive, and tunable for a largle area production.

Fabrication of graphene transparent film ultilizing L-B method

247th National Meeting (2014)

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