| 초록 |
Recently polymer solar cells have attracted significant interest because of their expectations for low-cost energy conversion medium from solar energy to electricity. At the moment the most intriguing combination is polymer/fullerene bulk heterojunction structures, leading to ＞6 % power conversion efficiency. However, the stability issues have been raised very recently for the polymer/fullerene solar cells in which the small molecular components (fullerenes) are likely to undergo continuous evolution under solar light illumination. On this account, polymer/polymer solar cells have a competitive advantage in reliability. However, the current record efficiency of polymer/polymer solar cells is quite lower than that of polymer/fullerene solar cells. In this presentation, we tried to improve the efficiency of polymer/polymer solar cells by introducing co-solvents. The detailed performance and nanostructures according to the type of co-solvents will be displayed and discussed. |
