| 초록 |
π-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 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 π-conjugated oligomers for nano-scale solar cells and low bandgap polymers for bulk-heterojunction solar cells. |
