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- W4308224649 abstract "The elaborate control of the vertical phase distribution within an active layer is critical to ensuring the high performance of organic solar cells (OSCs), but is challenging. Herein, a self-stratification active layer is realised by adding a novel polyfluoroalkyl-containing non-fullerene small-molecule acceptor (NFSMA), EH-C8F17, as the guest into PM6:BTP-eC9 blend. A favourable vertical morphology was obtained with an upper acceptor-enriched thin layer and a lower undisturbed bulk heterojunction layer. Consequently, a power conversion efficiency of 18.03 % was achieved, higher than the efficiency of 17.40 % for the device without EH-C8F17. Additionally, benefiting from the improved charge transport and collection realised by this self-stratification strategy, the OSC with a thickness of 350 nm had an impressive PCE of 16.89 %. The results of the study indicate that polyfluoroalkyl-containing NFSMA-assisted self-stratification within the active layer is effective for realising an ideal morphology for high-performance OSCs." @default.
- W4308224649 created "2022-11-09" @default.
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- W4308224649 date "2022-11-30" @default.
- W4308224649 modified "2023-10-18" @default.
- W4308224649 title "A Polyfluoroalkyl‐Containing Non‐fullerene Acceptor Enables Self‐Stratification in Organic Solar Cells" @default.
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- W4308224649 doi "https://doi.org/10.1002/ange.202213869" @default.
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