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- W4297902883 abstract "Abstract Central π‐core engineering of non‐fullerene small molecule acceptors (NF‐SMAs) is effective in boosting the performance of organic solar cells (OSCs). Especially, selenium (Se) functionalization of NF‐SMAs is considered a promising strategy but the structure‐performance relationship remains unclear. Here, we synthesize two isomeric alkylphenyl‐substituted selenopheno[3,2‐b]thiophene‐based NF‐SMAs named mPh4F‐TS and mPh4F‐ST with different substitution positions, and contrast them with the thieno[3,2‐b]thiophene‐based analogue, mPh4F‐TT. When placing Se atoms at the outer positions of the π‐core, mPh4F‐TS shows the most red‐shifted absorption and compact molecular stacking. The PM6 : mPh4F‐TS devices exhibit excellent absorption, high charge carrier mobility, and reduced energy loss. Consequently, PM6 : mPh4F‐TS achieves more balanced photovoltaic parameters and yields an efficiency of 18.05 %, which highlights that precisely manipulating selenium functionalization is a practicable way toward high‐efficiency OSCs." @default.
- W4297902883 created "2022-10-01" @default.
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- W4297902883 date "2022-10-17" @default.
- W4297902883 modified "2023-10-12" @default.
- W4297902883 title "Precise Control of Selenium Functionalization in Non‐Fullerene Acceptors Enabling High‐Efficiency Organic Solar Cells" @default.
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- W4297902883 doi "https://doi.org/10.1002/ange.202206930" @default.
- W4297902883 hasPublicationYear "2022" @default.
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