| 초록 |
Recently, we synthesized a polymer consisting of alternating carbazole and the ester group-substituted thieno[3,4-b]thiophene units (PCTT1), which showed the band gap of 2.1 eV and HOMO level of 5.52 eV. When the polymer was blended with PCBM and used as active layers of solar cells, the maximum power conversion efficiency (PCE) of the devices was 2.53%. In this study, a counterpart polymer containing fluorine instead of carbazole (PFTT) was synthesized. The band gap and HOMO level of PFTT were similar to those of PCTT1, as expected. The polymer was used along with PCBM in fabrication of polymer solar cells. The experimental results will be presented in details. |
