| 초록 |
Conjugated organic molecules have been used as key materials for a variety of optoelectronic devices such as organic light-emitting diodes(OLEDs), organic thin film transistors(OTFTs), and organic photovoltaic devices(OPVs). Recently, organic photovoltaic devices have attracted much attention owing to their potential cost-effectiveness of light-weight and flexible solar cells. So far, a power conversion efficiency of ~5% has been obtained in OPVs using P3HT and PCBM. To achieve high power conversion efficiency in OPVs, it is necessary to develop new electron-donor polymers which possess several characteristics such as harvesting photons in a wide range of spectrum, efficient exciton dissociation, high hole mobility, suitable HOMO and LUMO energy levels, and good miscibility with the electron-acceptor materials. In this talk, I will present results in studies of conjugated p-n junction oligomers for nano-scale solar cells and low bandgap polymers for bulk-heterojunction solar cells. |
