High performance transparent conductor of graphene wrapped copperickel microgrids

摘要

A high performance, highly stable transparent conducting structure based on microscale copperickel grids wrapped with graphene is presented. Graphene is selectively deposited on the surfaces of the microgrids by atmospheric pressure chemical vapor deposition method. The optical transmittance of the copperickel microgrid sample is ∼80% over the visible and near-infrared spectra with a very small sheet resistance of ∼0.58 Ω/sq. After the high temperature deposition of graphene, the sample's transmittance increases to be ∼90% due to the line width reduction of the microgrids while the sheet resistance also increases to ∼5 Ω/sq. The graphene layer is deposited to keep the copperickel surfaces from being oxidized in the air. Both stability testing and composition spectra results confirm the long-term stability of the copperickel microgrids wrapped with graphene.