| 초록 |
Organic photovoltaics possess many advantages such as light-weight, low cost, facile fabrication for large area, and mechanical flexibility. However, there are still obstacles to achieve high power conversion efficiencies (PCE) because of the mismatch between the solar spectrum and the spectra of organic materials used in active layer. To overcome this absorption limitation, synthesizing new low band gap materials is proposed to improve PCE of organic solar cells. Generally, low band gap molecules consist of D (electron-donating unit) and A (electron-accepting unit) alternative structure. In this work, we have synthesized new low band gap A-D-A type molecules, and their optical and electrochemical properties will be presented along with their application to organic solar cells. |
