Versatile Wafer-Scale Technique for the Formation of Ultrasmooth and Thickness-Controlled Graphene Oxide Films Based on Very Large Flakes.
We present a new strategy to form thickness-adjusted and ultrasmooth films of very large and unwrinkled graphene oxide (GO) flakes through the transfer of both hemispherical and vertical water films stabilized by surfactants. With its versatility in terms of substrate type (including flexible organic substrates) and in terms of flake density (from isolated flakes to continuous and multilayer films), this wafer-scale assembly technique is adapted to a broad range of experiments involving GO and rGO (reduced graphene oxide). We illustrate its use through the evaluation of transparent rGO electrodes.
CEA Saclay, IRAMIS, NIMBE (UMR 3685), LICSEN, F-91191 Gif sur Yvette, France.
Joël
J
Azevedo
CEA Saclay, IRAMIS, NIMBE (UMR 3685), LICSEN, F-91191 Gif sur Yvette, France.
Stéphane
S
Campidelli
CEA Saclay, IRAMIS, SPEC, F-91191 Gif sur Yvette, France.
Delong
D
He
CEA Saclay, IRAMIS, NIMBE (UMR 3685), LICSEN, F-91191 Gif sur Yvette, France.
Renaud
R
Cornut
CEA Saclay, IRAMIS, NIMBE (UMR 3685), LICSEN, F-91191 Gif sur Yvette, France.
Michael
M
Bertucchi
University Paris-Sud and CNRS , Laboratoire de Chimie Physique, UMR 8000, F-91405 Orsay, France.
Sébastien
S
Sorgues
CEA Saclay, IRAMIS, SPEC, F-91191 Gif sur Yvette, France.
Jean-Jacques
JJ
Benattar
University Paris-Sud and CNRS , Laboratoire de Chimie Physique, UMR 8000, F-91405 Orsay, France.
Christophe
C
Colbeau-Justin
CEA Saclay, IRAMIS, NIMBE (UMR 3685), LICSEN, F-91191 Gif sur Yvette, France.
Vincent
V
Derycke
graphene oxide; large flakes; transfer method; transparent electrodes; ultrathin films; wafer scale