| 초록 |
Organic photovoltaic cells (OPVs), one of the remarkable renewable energy sources, have aroused great attention due to their inexpensive process cost, easy fabrication, and light weight. Non-fullerene small molecule acceptors (NFSMs) have developed to overcome the limitations of fullerene derivatives such as fixed energy levels, relatively high manufacturing price, and weak absorption. The PCEs of NFSM-based OPVs has already exceeded 11% in binary cells. Introducing electron-withdrawing dye end groups into the molecular backbone of acceptors resulted in high performance OPVs. In this study, we synthesized a series of conjugated rhodanine-containing acceptors, in which various alkyl chain were introduced at both ends in order to control molecular aggregation. The detailed OPV performances as well as physical properties including the thermal, electrochemical, and optical properties will be demonstrated in this presentation. |
