| 초록 |
Organic solar cells (OSCs) were highlighten as a future energy generator and many effort have been done to engance OSCs performances. Now, singe cell devices based on non-fullerene acceptor (NFAs) recorded power conversion efficiency (PCE) ocer 14% which is close to PCE of the commercial inorganic solar cells. For the high performance OSCs, materials should satisfy several requirements. Donor and acceptor materials should exhibit enough solubility, proper energy level alignment, complementary absorption, packing behavior, and perper miscibility. In this presentation, we synthesized novel NFAs designed to fulfill previously described requirment. Chemical and physical properties of NFAs were investigated to confirm compatibility with donor material PTB7-Th. OSC devices based on PTB7-Th and acceptors were fabbricated and photovoltaic properties were measured. Correlation between OSC performances and materials were investigated. |
