Charge transfer between reduced graphene oxide sheets on insulating substrates
2013
Understanding the electrical communications between graphene sheets placed on insulating substrates is of great value to rational design of functional graphene nanoelectronics. In this paper, we report charge transfer between reduced graphene oxide (rGO) sheets separated in hundreds of nanometers on insulating substrates. We found that the rGO sheet collects charges from the adjacent charged rGO sheet through the dielectric surfaces. The efficiency of charge transfer between the separated rGO sheets is dependent on their separation distance, gap length, and the substrate type. The findings suggest that the charge interflow should not be neglected in a graphene circuit.
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