Physics – Condensed Matter – Materials Science
Scientific paper
2009-12-30
Nature Nanotech. Advance Online Publication (2010)
Physics
Condensed Matter
Materials Science
Scientific paper
10.1038/nnano.2010.132
We report that 30-inch scale multiple roll-to-roll transfer and wet chemical doping considerably enhance the electrical properties of the graphene films grown on roll-type Cu substrates by chemical vapor deposition. The resulting graphene films shows a sheet resistance as low as ~30 Ohm/sq at ~90 % transparency which is superior to commercial transparent electrodes such as indium tin oxides (ITO). The monolayer of graphene shows sheet resistances as low as ~125 Ohm/sq with 97.4% optical transmittance and half-integer quantum Hall effect, indicating the high-quality of these graphene films. As a practical application, we also fabricated a touch screen panel device based on the graphene transparent electrodes, showing extraordinary mechanical and electrical performances.
Ahn Jong-Hyun
Bae Sukang
Balakrishnan Jayakumar
Hong Byung Hee
Iijima Sumio
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