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Title: Layer-by-layer assembly of graphene and polyaniline for electrochromic devices
Authors: Mok, Kai Jie.
Keywords: DRNTU::Engineering::Materials::Microelectronics and semiconductor materials
Issue Date: 2011
Abstract: Multilayer structured film of graphene and polyaniline was fabricated by the layer-by-layer assembly technique using dip coating. A precursor layer of branched polyethylenimine was deposited to assist in a more stable build up of subsequent graphene and polyaniline layers. The completed multilayer film was reduced by hydrazine monohydrate and conductivity measured by 4-point probe was found to increase by about 125 times to 0.55 S/cm. AFM images presented random flake structures of graphene and Raman spectroscopy were used to determine the presence of its oxidised and reduced states. Reoxidation/redoping of the reduced film using oxidising agent, ferric chloride, showed a 1.7 times increase of conductivity to 0.93 S/cm.
Rights: Nanyang Technological University
Fulltext Permission: restricted
Fulltext Availability: With Fulltext
Appears in Collections:MSE Student Reports (FYP/IA/PA/PI)

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