| 초록 |
Organic solar cells(OSCs) have advantages of flexibility and low cost, but also have disadvantages of low power conversion efficiency(PCE). In recent years, PCE has been improved by interfacial engineering and synthesis of new materials. Most of active layer is composed of bulk-heterojunction systems blending donor with acceptor. Solvent additives have different solubility of donor and acceptor, which is important to form the phase separation. However, residual of most single additives need to remove because of degradation lead to decreasing the stability. On the other hand, introducing co-additives could form the molecular interaction that not need removal to prevent decreasing the stability, and could control the interpenetrating networks. In this study, OSCs were fabricated with co-additives about non-fullerene acceptor. The co-additives did not need removal and increased the FF. As a result, performances were enhanced by co-additives to control the interpenetrating networks. |
