| 초록 |
Conjugated polymers have drawn intensive attention as the semiconducting materials for organic photovoltaic devices due to their advantages to enable the development of plastic solar cells. In order to synthesize low band gap polymers, push-pull strategy is the most commonly used to produce low band-gap polymers. As donor parts, Pt acetylide groups have many advantages such as large open circuit voltage (Voc) driven by high oxidative potentials in previously reported Pt based polymers, and high Mn value. In addition, Diketopyrrolopyrrole (DPP) units as an acceptor have high electron accepting properties, and long wavelength absorption in the range of 500 ~ 720 nm, resulting in low band-gap, and absorbing more photon flux. Based on above motivations, we synthesized low band-gap alternating polymers incorporating platinum acetylide as a donor part and DPP as an acceptor. In addition, 1H-NMR, thermal, device performances, and electrochemical properties of this polymer were examined. |
