Graphitic carbon growth on crystalline and amorphous oxide substrates using molecular beam epitaxy
1 Department of Physics and Graphene Research Institute, Sejong University, Seoul 143-747, South Korea
2 Department of Physics, Ewha University, Seoul 151-747, South Korea
Nanoscale Research Letters 2011, 6:565 doi:10.1186/1556-276X-6-565Published: 26 October 2011
We report graphitic carbon growth on crystalline and amorphous oxide substrates by using carbon molecular beam epitaxy. The films are characterized by Raman spectroscopy and X-ray photoelectron spectroscopy. The formations of nanocrystalline graphite are observed on silicon dioxide and glass, while mainly sp2 amorphous carbons are formed on strontium titanate and yttria-stabilized zirconia. Interestingly, flat carbon layers with high degree of graphitization are formed even on amorphous oxides. Our results provide a progress toward direct graphene growth on oxide materials.
PACS: 81.05.uf; 81.15.Hi; 78.30.Ly.