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.
Bibliographical noteFunding Information:
This research was supported by the Priority Research Centers Program (2011-0018395), the Basic Science Research Program (2011-0026292), and the Center for Topological Matter in POSTECH (2011-0030046) through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology (MEST). This work was also supported in part by the General R/D Program of the Daegu Gyeongbuk Institute of Science and Technology (DGIST) (Convergence Technology with New Renewable Energy and Intelligent Robot).
- Molecular beam epitaxy