| 초록 |
Although dye-sensitized solar cells (DSScs) have many advantages compared to the conventional Si based solar cells, volatile liquid electrolytes limits to their commercial applications. Thus, a great deal of research work has been focusing on searching for efficient solid-state hole transporting materials (HTMs) to replace redox mediators in liquid electrolytes. In this study, all solid-state DSSCs with a biscarbazole-based hole transporting polymer were fabricated, and effects of molecular weight on the photovoltaic properties of them were examined. When a higher molecular weight polymer was applied as the HTM, the solid-state DSSC showed a higher power conversion efficiency, compared to that with a lower molecular weight polymer, probably due to an more efficient intramolecular charge transport of the higher one. |
