| 초록 |
During last decade, many researchers have reported conjugated polymers with electron-donating and electron-accepting moieties combined through -conjugated linkers in the polymer backbones, which reduce the optical bandgaps and allow the absorption of the polymers to match well with the solar spectrum in order to utilize them in polymeric solar cell (PSC) applications. Among them, diketopyrrolopyrrole (DPP)-based conjugated polymers have been extensively used in the design of low band bandgap polymers because of their unique characteristics. In this study, we report the synthesis and characterization of low bandgap DPP polymers containing carbazoles or triphenylamines as bulky pendants. We also investigate how these electron rich pendant groups affect physical, optical, and electrical properties as well as solar cell efficiency of the polymers. |
