Abstract
Conducting polymers such as PEDOT:PSS have received tremendous attention as possible substitute for ITO as transparent and conductive material in flexible electronic devices. Due to its extraordinary electrical, physical, and chemical properties Graphene has sparked huge interest in many advanced technologies. To enhance the aggregate properties, conducting polymers have been reinforced with graphene, graphene oxide (GO), reduced graphene oxide (rGO) etc. In this study, thin films of PEDOT:PSS and GO composites were deposited on glass substrates by spin-coating technique. Dimethyl sulfoxide (DMSO) was added to PEDOT:PSS to enhance the conductivity. The films were characterized by four probe, XRD, Scanning electron microscopy (SEM) and Ellipsometry. Conductivity measurement by four probe technique shows highest conductivity of 1170 S/cm for 5% DMSO doped PEDOT:PSS films. XRD shows shift in peak position of PEDOT:PSS films due to addition of DMSO and GO. Spectroscopic ellipsometry study indicates an increase in refractive index due to addition of GO in PEDOT:PSS.
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