Characterization of push-pull type of conjugated polymers containing 8H-thieno[2,3-b]indole for organic photovoltaics

The polymer composed of BT with two fluorine unit coupled with 2-TI, PTIDFDTBT, shows higher VOC out of the series. The device comprising PTIDFDTBT and PC71BM (1:3) showed a VOC of 0.79 V, a JSC of 8.39 mA/cm2, and a fill factor (FF) of 0.48, giving a power conversion efficiency of 3.21%.