Journal
ACS NANO
Volume 5, Issue 9, Pages 7656-7661Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nn202802x
Keywords
graphene growth; amorphous carbon; hydrogen; hydrocarbon; mass spectroscopy
Categories
Funding
- National Science Foundation [1006350]
- Nanoelectronic Research Initiative-SouthWest Academy of Nanoelectronics (NRI-SWAN)
- Office of Naval Research
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [1006350] Funding Source: National Science Foundation
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Graphene has been grown on Cu at elevated temperatures with different carbon sources (gaseous hydrocarbons and solids such as polymers); however the detailed chemistry occurring at the Cu surface is not yet known. Here, we explored the possibility of obtaining graphene using amorphous-carbon thin films, without and with hydrogen gas added. Graphene is formed only In the presence of H-2(g), which strongly suggests that gaseous hydrocarbons and/or their Intermediates are what yield graphene on Cu through the reaction of H-2(g) and the amorphous carbon. The large area, uniform monolayer graphene obtained had electron and hole mobilities of 2520 and 2050 cm(2) V-1 s(-1), respectively.
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