| 초록 |
Organic solar cells (OSCs) have advantages, such as flexibility, low cost. But, the low power conversion efficiency (PCE) of OSCs is one of the important issues. Many efforts have been made for achieving the high PCE such as introducing interfacial layers. In general, most OSCs are being processed with solvent additives that have led to morphology of photoactive layer by high acceptor solubility more than donor. The optimized morphology is important key to achieve high efficiency. However, residual additives usually cause degradation result in decreasing performance and stability. On the other hand, introducing co-additives could not need vacuum treatment caused by molecular interaction. In this study, conventional structured OSCs were fabricated with co-additives in photoactive layer. The co-additives in the active layer did not need vacuum treatment and increased the FF. As a result, performances of fabricated OSCs were enhanced than the device with single additive. |
