| 초록 |
Graphene, two-dimensional (2D) single layer of carbon atoms, is a promising material having remarkable properties such as zero band-gab, ambipolar electric field effect, Quantum Hall effect and so on. Currently, many researchers focus on obtaining low-cost and high-quality graphene via chemical vapor deposition (CVD), oxidation of graphite, electrochemical exfoliation of graphite. Here, we report a new method for the formation of large-area graphitic film from hyperbranched polymer, which is prepared from the polymerization of 4-ethylbenzoic acid (EBA). The resultant hyperbranched polymer displayed 2D crystalline structure. As a result, 2D graphitic structure, which was observed by transmission electron microscope (TEM) and atomic force microscopy (AFM), could be prepared by a simple solution casting and subsequent thermal annealing. The electrical properties of large-area graphitic film were studied by using field effect transistors (FET). |
