Characterization of push-pull type of conjugated polymers containing 8H-thieno[2,3-b]indole for organic photovoltaics
Source abstract
Abstract
Abstract Polymers using thieno[2,3-b]indole (2-TI) with high planarity were synthesized and utilized for the photovoltaics. Conjugated polymers (PTIDTBT, PTIFDTBT and PTIDFDTBT) containing 2-TI as electron-donating unit and fluorinated DTBT as electron-accepting unit were synthesized. To enhance the effect of lowering highest occupied molecular orbital (HOMO) energy level for the high open-circuit voltages (VOC), we utilized new thieno[2,3-b]indole (2-TI) moiety as the weak electron-donating group and the fluoro-substituted electron-accepting BT unit. 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%.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Organic Electronics and Photovoltaics · Conducting polymers and applications · Organic Light-Emitting Diodes Research
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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