Highly Conductive and Transparent Graphene Oxide Modified PEDOT: PSS Films as Stretchable and Flexible Transparent Electrodes

A highly transparent and conductive film was obtained by mixing poly (3, 4-ethylenedioxythiophene): poly (styrene sulfonate) (PEDOT: PSS) with graphene oxide (GO). Solution processible graphene oxide with diameter up to 10 μm is synthesized by modified Hummer method. Spin-coating the mixing solution of graphene oxide and PEDOT: PSS results in the transparent conducting electrode (TCE) without the need for high temperature annealing or any additional process. The decrease in sheet resistance and increase in conductivity can be related to the weakening of coulombic attraction between conductive PEDOT and insulating PSS by the functional groups on GO nano sheets. The overall properties of the prepared electrodes meet the requirements of TCE for many applications.