| CROSS-DISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY |
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Growth of Few-Layer Graphene on Sapphire Substrates by Directly Depositing Carbon Atoms |
| KANG Chao-Yang1, TANG Jun1, LIU Zhong-Liang1,2, LI Li-Min1, YAN Wen-Sheng1, WEI Shi-Qiang1, XU Peng-Shou1**
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1National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029
2School of Physics and Electronic Information, Huaibei Normal University, Huaibei 235000
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| Cite this article: |
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KANG Chao-Yang, TANG Jun, LIU Zhong-Liang et al 2011 Chin. Phys. Lett. 28 118101 |
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Abstract Few-layer graphene (FLG) is successfully grown on sapphire substrates by directly depositing carbon atoms at the substrate temperature of 1300 °C in a molecular beam epitaxy chamber. The reflection high energy diffraction, Raman spectroscopy and near−edge x-ray absorption fine structure are used to characterize the sample, which confirm the formation of graphene layers. The mean domain size of FLG is around 29.2 nm and the layer number is about 2–3. The results demonstrate that the grown FLG displays a turbostratic stacking structure similar to that of the FLG produced by annealing C-terminated α-SiC surface.
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| Keywords:
81.05.Tp
73.50.-h
68.55.Jk
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Received: 13 May 2011
Published: 30 October 2011
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