| 초록 |
Polymer solar cells(PSCs), generally based on the bulk-heterojunction (BHJ) concept, have attracted tremendous attention due to their unique advantages including low cost, light weight, and potential applications in flexible and large-area devices. It needed to design conjugated polymers with high efficiency. The benzodithiophene (BDT) is another well used donor unit in high performance polymers at present. Because it have many advantages which are broad π conjugation length, low HOMO level and high charge carrier mobility. To have a the advantages and additional properties of BDT, we introduced a indacenodithiophene (IDT) as a donor. The IDT has improved planarity and expanded conjugation length with a fused indacene rings. It helps to form highly ordered films that facilitate charge-carrier transport. So we synthesized IDT-based conjugated polymer via Stille coupling reaction. |
