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Doped graphene nanohole arrays for flexible transparent conductors

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9 Author(s)
Liu, Jianwei ; Department of Physics and Astronomy, University of Kansas, Lawrence, Kansas 66045, USA ; Xu, Guowei ; Rochford, Caitlin ; Lu, Rongtao
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Graphene nanohole arrays (GNAs) were fabricated using nanoimprint lithography. The improved optical transmittance of GNAs is primarily due to the reduced surface coverage of graphene from the nanohole fabrication. Importantly, the exposed edges of the nanoholes provided effective sites for chemical doping using thionyl chloride was shown to enhance the conductance by a factor of 15–18 in contrast to only 2-4 for unpatterned graphene. GNAs can provide a unique scheme for improving both optical transmittance and electrical conductivity of graphene-based transparent conductors.

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Applied Physics Letters  (Volume:99 ,  Issue: 2 )