A simple alcohol-chemical vapor deposition synthesis of single-layer graphenes using flash cooling

作者：Miyata Yasumitsu; Kamon Keiichi; Ohashi Kazunori; Kitaura Ryo; Yoshimura Masamichi; Shinohara Hisanori^*

来源：Applied Physics Letters, 2010, 96(26): 263105.

DOI：10.1063/1.3458797

• chemical vapour deposition
• grain size
• graphene
• precipitation
• Raman spectra
• surface diffusion

We report the synthesis of single-layer graphenes from ethanol using, what we call, "flash cooling" just after chemical vapor deposition. The single-layer graphenes synthesized are high-quality and several micrometers in grain size as revealed by Raman spectroscopy. Detailed comparison of the cooling processes suggests that the single-layer graphene growth does not occur during the carbon precipitation but rather stems from surface diffusions of carbon on a nickel substrate. Because of the present simple and easiness for the large-scale synthesis under an inert gas atmosphere and at atmospheric pressure, the present method can easily be applied for the future large-scale and low-cost graphene production.

• 出版日期2010-6-28