ACS Nano 2011-06-28

Large-area graphene films by simple solution casting of edge-selectively functionalized graphite.

Seo-Yoon Bae, In-Yup Jeon, Jieun Yang, Noejung Park, Hyeon Suk Shin, Sungjin Park, Rodney S Ruoff, Liming Dai, Jong-Beom Baek

Index: ACS Nano 5(6) , 4974-80, (2011)

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Abstract

We report edge-selective functionalization of graphite (EFG) for the production of large-area uniform graphene films by simply solution-casting EFG dispersions in dichloromethane on silicon oxide substrates, followed by annealing. The resultant graphene films show ambipolar transport properties with sheet resistances of 0.52-3.11 kΩ/sq at 63-90% optical transmittance. EFG allows solution processing methods for the scalable production of electrically conductive, optically transparent, and mechanically robust flexible graphene films for use in practice.