Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5466252 | Thin Solid Films | 2017 | 23 Pages |
Abstract
Graphene has attracted a great deal of interest due to its fascinating properties and a wide variety of potential applications. Several methods have been used to achieve high-quality graphene films on different substrates. However, there have been only a few studies on graphene growth on iron (Fe) and the growth mechanism remains unclear. This paper systematically investigates temperature-dependent growth of graphene on Fe substrate by gas-source molecular beam epitaxy. Two-dimensional (2D), large-area graphene samples were grown on Fe thin films, and characterized by Raman, X-ray photoelectron spectroscopy, X-ray diffraction, optical microscopy, transmission electron microscopy and atomic force microscopy. It is found that graphene flakes can be grown on Fe at a growth temperature as low as 400 °C and the optimized large-area graphene growth temperature is relatively low between 500 °C and 550 °C. The graphene growth on Fe that undergoes the formation and decomposition of iron carbide is discussed.
Related Topics
Physical Sciences and Engineering
Materials Science
Nanotechnology
Authors
Renjing Zheng, Zhongguang Xu, Alireza Khanaki, Hao Tian, Zheng Zuo, Jian-Guo Zheng, Jianlin Liu,