| 초록 |
Recently polymer solar cells (PSC) blended with a fullerene derivative has been increasing over 10% of power conversion efficiency (PCE). But fullerene derivatives have some disadvantages such as cost, limited spectral absorption and stability. Most PCE for PSC devices due to the self-aggregation of the fullerene is decreased as time goes by. To overcome these shortcomings, the introduction of ternary blended system is considered as a solution. Thus we designed small molecule acceptor ‘IDT-E2’ using a new end-group. It introduced active layer as a third component. ‘IDT-E2’ makes a hydrogen bonding between another molecules. Hydrogen bonding in active layer can reduce the distance of molecules and increase the charge carrier transport properties. Furthermore its hydrophilicity can make locked morphologies, so we can prevent the self-aggregation of fullerene. In this study, we characterized the new small molecule acceptor of ‘IDT-E2’ and it fabricated inverted devices. |
