| 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 that are flexible, low cost, and lightweight. Push-pull strategies are the most commonly used to synthesize low band-gap polymers because of some advantages such as easy band-gap tuning, high degree of polymerization. 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. BT units as an acceptor have high electron accepting properties, resulting in low band-gap polymers having high Voc. Based on above motivations, we synthesized low band-gap alternating polymers incorporating platinum acetylide as a donor part and a 2, 1, 3-benzothiadiazole (BT) as an acceptor. |
