| 초록 |
Graphene is considered to be a large aromatic macromolecule, the exceptional case of polycyclic aromatic hydrocarbons (PAHs). This fascinating two-dimensional material has many potential applications, including field effect transistors (FETs). However, the absence of a band-gap for this material gives rise to very small on/off ratios, which constitutes the main limitation of the device performance. Here, we report here a bottom-up attempt to fabricate thin film having two-dimensional (2D) graphitic structure, which is prepared form the synthesis of coronene as seed and 4-ethylbenzoic acid (EBA) as AB2 monomer. The resultant hyperbranched polymer after thermal annealing displayed 2D graphitic structure, which was confirmed by transmission electron microscope (TEM) and atomic force microscopy (AFM). The electrical properties of large-area graphitic film were studied by using field effect transistors (FET). |
