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- W2948280069 abstract "In chemical vapor deposition (CVD) growth of graphene, intrinsic carbon in copper has been shown to play a role, especially during the nucleation phase. Here, we report experimental results on depletion of carbon from the bulk of a Cu foil to its surface at different hydrogen pressures, which explain new aspects of the interplay between hydrogen and intrinsic carbon prior to growth. We observed that rising H2 pressure boosts carbon depletion to the surface, but at the same time, at elevated H2 pressures, the graphitic film formed on the Cu surface is etched away at a faster rate. This effect led us to practice annealing of copper under high hydrogen pressure as an approach to decrease the total content of carbon in the copper foil and consequently reducing the nucleation density of graphene flakes. These results enhance our understanding about the role of H2 in the CVD process and explain some of the inconsistencies among the earlier reports." @default.
- W2948280069 created "2019-06-14" @default.
- W2948280069 creator A5056644993 @default.
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- W2948280069 date "2019-06-03" @default.
- W2948280069 modified "2023-09-27" @default.
- W2948280069 title "On the Dynamics of Intrinsic Carbon in Copper during the Annealing Phase of Chemical Vapor Deposition Growth of Graphene" @default.
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- W2948280069 doi "https://doi.org/10.1021/acsomega.9b00681" @default.
- W2948280069 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/6647976" @default.
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