2014 Volume 53 Issue 1 Pages 46-52
This article introduces the method to fabricate a transparent graphene conductive film from graphite powder by a solution process. Chemically oxidized graphite powder was dispersed in water, and it was exfoliated by repeated centrifugation and washing processes to obtain a graphene oxide solution. Successively, a graphene oxide film was prepared by coating a transparent substrate with the prepared solution, and it was chemically and thermally deoxidized to produce a transparent graphene conductive film. To date, organic thin film photovoltaic cells with the graphene transparent electrodes have shown the power conversion efficiency as high as 1.2%. Novel application of graphene oxide to hole-transporting layers and organic/inorganic heterojunction solar cells will be also presented. Finally, I will show the application of solution-processed graphene electrodes to organic thin film field-effect transistors.
