Patent ID: 8853034
Filing Date: 2014-10-07
Classification: B82Y,C01B,H01B,H01L,Y02E

Abstract:
1. A method for increasing conductivity of a graphene film, comprising the steps of: forming the graphene film on a substrate from one or more graphene sheets by depositing the graphene sheets one on top of another on the substrate; and exposing the graphene sheets to a solution comprising a one-electron oxidant configured to dope the graphene sheets via charge transfer to increase a conductivity thereof and to reduce a sheet resistance thereof while leaving a conjugated network of the graphene sheets uninterrupted, thereby increasing the overall conductivity of the film, wherein the step of forming the graphene film is performed prior to the step of exposing the graphene sheets to the one-electron oxidant solution, and wherein a transparency of the graphene film is unchanged by exposing the graphene sheets to the solution.