| 초록 |
Organic Photovoltaics (OPVs) have drawn attention due to the advantages such as low cost large areas roll-to-roll production, light weight, printability and continuously enhancing Power Conversion Efficiency (PCE) of OPV for environmental energy application.[1] Herein, we synthesized conjugated polymers, PTIDTBT, PTIFDTBT and PTIDFDTBT, the polymers including 4,7-di-2-thienyl-2,1,3-benzothiadiazole (DTBT) derivatives as electron withdrawing unit and thieno[2,3-b]indole (TI) as electron donating unit. In this study, we synthesized polymers including DTBT unit with different number of F atoms. The conjugated polymers with the electron withdrawing and donating groups are synthesized by Suzuki-Coupling Reaction with palladium catalyst. The device including PTIDFDTBT showed a VOC of 0.79 V, a JSC of 8.39 mA/cm2, and a fill factor (FF) of 0.48, giving a great PCE of 3.21%. [1] Su, Y.-W; Lan, S.-C.; Wei, K.-H. Organic photovoltaics. Mater. Today, 2012, 15, 554-562. |
