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- W4387633873 abstract "Simultaneously enhancing the short-circuit current density (Jsc) and open-circuit voltage (Voc) of current state-of-the-art polymer solar cells (PSCs) containing wide bandgap polymers as donors and Y6 derivatives as acceptors is of great challenge but essential for further improvement of the photovoltaic performances. In this work, two Y-type non-fullerene acceptors of BTP-T and BTP-TCl were designed and successfully synthesized with relatively weak electron-accepting thiophene based end groups, where blue-shifted absorption and upshifted LUMO energy levels were achieved to fill the well-known absorption gap at 700 nm of typical binary devices based Y-type molecules and rise the output voltage, respectively. Simultaneously increased Jsc and Voc were achieved in ternary blend devices containing D18:BTP-eC9:BTP-TCl with a significantly improved PCE up to 19.15 %, which is over 7 % increase compared to the binary device. Our results illustrated the great potential of rational design of Y6 derivatives for constructing ternary PSCs to improve their performances." @default.
- W4387633873 created "2023-10-14" @default.
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- W4387633873 date "2023-11-01" @default.
- W4387633873 modified "2023-10-15" @default.
- W4387633873 title "Simultaneously improved Jsc and Voc achieving 19.15% efficiency in ternary blend polymer solar cell containing a Y-type acceptor with thiophene based end groups" @default.
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- W4387633873 doi "https://doi.org/10.1016/j.cej.2023.146538" @default.
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