Graphene-based materials have been received increasing attention in the last decade due to unique mechanical, optical, electrical and thermal properties of graphene. Among graphene materials, graphene oxide is also very important due to its functional groups located  on the basal and edge of its structure.<br/> <br/>Graphene-based composites have been prepared by using different physical and chemical methods such as non-covalent mixing followed with adsorption route, in situ polymerization, interfacial polymerization and electrochemical deposition. These methods generally require many chemicals and purification steps. Compared with these methods, plasma method has been also used to prepare polymers and composite materials. By using this method, conducting polymers can be directly coated on graphene surfaces and the obtained composites can be used without further treatment. Based on these properties, plasma method is known as cost-effective, fast and environmentally friendly method.<br/> <br/>In this study, the composites of graphene and graphene oxide with three different conducting polymers include polythiophene, polypyrrole and polyaniline were prepared by using RF-rotating plasma method (13.56 MHz, 0.02 torr, 40W, and 3h). The composites were investigated in terms of morphology, chemical structure, chemical compositions, and thermal behaviors with scanning electron microscopy (SEM), Fourier-transform infrared spectroscopy (FT-IR), X-ray photoelectron spectroscopy (XPS) and thermal gravimetric analysis (TGA). The obtained composites were used in solar cell and biosensor applications and exhibited notable results.

Plasma-enhanced graphene and graphene oxide based conducting polymer composites for solar cell and biosensor applications

253rd National Meeting (2017)

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