| 초록 |
Graphene-based interfacial layers have been studied for the low-cost, solution-processable, and flexible devices. Chemical route was widely used to prepare graphene oxide (GO); however, the reduction process was needed to obtain semi-metallic reduced graphene oxide (r-GO). To prevent irreversible aggregation, insulating surfactant was introduced to r-GO. However, r-GOs with insulating surfactant are still problematic such as low dispersibility, processability, and conductivity. In order to solve these problems, we synthesized novel r-GO (Fr-GO) which was made by the reduction process after a blend of GO and the semiconducting fullerene derivative surfactant. Fr-GO showed good dispersion concentration as well as film-forming property. In addition, the structural, optical, and thermal properties of Fr-GO were characterized by XPS, FT-IR, UV-vis spectroscopy, and TGA. Finally, we will discuss the possibility for the utilization of the Fr-GO as an interfacial layer in organic solar cells. |
