| 초록 |
Over two decades, extensive research has been conducted about organic electronics, particularly organic solar cells (OSCs) and organic thin film transistors (OTFTs), due to their light-weight, cheap, flexible properties. In this study, we synthesized new conjugated polymers containing two kinds of the fused benzene ring structures, naphthalene and phenanthrene units, for OSCs and OTFTs. Compared with conventional polythiophene derivatives, these polybenzene compounds have deep HOMO levels due to their high aromaticity, which means they can achieve high open circuit voltage in OSCs. Moreover, their rigid planar structure has potential for high charge carrier mobilities in OTFTs. We used a diketopyrrolopyrrole (DPP) unit as an electron accepting moiety for donor-acceptor type alternating copolymers for reducing the optical band gap. In this presentation, we will report the material synthesis, characterization, and device performance of these novel low band gap polymers. |
