| 초록 |
Recently, several research groups have reported that bulk-heterojunction (BHJ) solar cells based on a composite film using poly(3-hexylthiophene) (P3HT) as an electron donor and 1-(3-methoxycarbonyl)-propyl-1-phenyl-(6,6)C61 (PCBM) as an electron acceptor show a power-conversion efficiency near 5%. The realization of organic photovoltaic cells (OPVs) with flexible, low-cost, and high-efficiency will be the obvious goal in this field. For this reason, as an attempt to further enhance cell efficiencies of OPVs, three-dimensional (3D) morphologies for BHJ films based on P3HT and PCBM were investigated. In addition, highly conductive PEDOT:PSS films, obtained by addition of a polar solvent to an aqueous solution of PEDOT:PSS, were thoroughly investigated to gain a deeper understanding of the fundamental characteristics of the solvent-modified PEDOT:PSS film. Furthermore, use of a polyfluorene (WPF-oxy-F) derivative as the cathode interfacial layer was investigated. |
