Matches in SemOpenAlex for { <https://semopenalex.org/work/W4225687218> ?p ?o ?g. }
- W4225687218 abstract "Rationally utilizing and developing synthetic units is of particular significance for the design of high-performance non-fullerene small-molecule acceptors (SMAs). Here, a thieno[3,2-b]pyrrole synthetic unit was employed to develop a set of SMAs (ThPy1, ThPy2, ThPy3 and ThPy4) by changing the number or the position of the pyrrole ring in the central core based on a standard SMA of IT-4Cl, compared to which the four thieno[3,2-b]pyrrole-based acceptors exhibit bathochromic absorption and upshifted frontier orbital energy level due to the strong electron-donating ability of pyrrole. As a result, the polymer solar cells (PSCs) of the four thieno[3,2-b]pyrrole-based acceptors yield higher open-circuit voltage and lower energy loss relative to those of the IT-4Cl-based device. What is more, the ThPy3-based device achieves a power conversion efficiency (PCE) (15.3%) and an outstanding fill factor (FF) (0.771) that are superior to the IT-4Cl-based device (PCE = 12.6%, FF = 0.758). The ThPy4-based device realizes the lowest energy loss and the smallest optical band gap, and the ternary PSC device based on PM6:BTP-eC9:ThPy4 exhibits a PCE of 18.43% and a FF of 0.802. Overall, this work sheds light on the great potential of thieno[3,2-b]pyrrole-based SMAs in realizing low energy loss and high PCE." @default.
- W4225687218 created "2022-05-05" @default.
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- W4225687218 date "2022-04-27" @default.
- W4225687218 modified "2023-10-16" @default.
- W4225687218 title "Heteroheptacene-based acceptors with thieno[3<i>,</i>2-<i>b</i>]pyrrole yield high-performance polymer solar cells" @default.
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- W4225687218 doi "https://doi.org/10.1093/nsr/nwac076" @default.
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