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Molecular Design to Improve the Performance of Donor–π Acceptor Near-IR Organic Dye-Sensitized Solar Cells

Authors

  • Yan Hao,

    1. State Key Laboratory of Fine Chemicals, DUT–KTH Joint Education and Research Center on Molecular Devices, Dalian University of Technology (DUT), 2 Linggong Rd. 116024 Dalian (PR China), Fax: (+86) 411-83702185
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  • Prof. Xichuan Yang,

    Corresponding author
    1. State Key Laboratory of Fine Chemicals, DUT–KTH Joint Education and Research Center on Molecular Devices, Dalian University of Technology (DUT), 2 Linggong Rd. 116024 Dalian (PR China), Fax: (+86) 411-83702185
    • State Key Laboratory of Fine Chemicals, DUT–KTH Joint Education and Research Center on Molecular Devices, Dalian University of Technology (DUT), 2 Linggong Rd. 116024 Dalian (PR China), Fax: (+86) 411-83702185
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  • Meizhen Zhou,

    1. State Key Laboratory of Fine Chemicals, DUT–KTH Joint Education and Research Center on Molecular Devices, Dalian University of Technology (DUT), 2 Linggong Rd. 116024 Dalian (PR China), Fax: (+86) 411-83702185
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  • Jiayan Cong,

    1. State Key Laboratory of Fine Chemicals, DUT–KTH Joint Education and Research Center on Molecular Devices, Dalian University of Technology (DUT), 2 Linggong Rd. 116024 Dalian (PR China), Fax: (+86) 411-83702185
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  • Xiuna Wang,

    1. State Key Laboratory of Fine Chemicals, DUT–KTH Joint Education and Research Center on Molecular Devices, Dalian University of Technology (DUT), 2 Linggong Rd. 116024 Dalian (PR China), Fax: (+86) 411-83702185
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  • Prof. Anders Hagfeldt,

    1. School of Chemical Science and Engineering, Center of Molecular Devices, Physical Chemistry, Royal Institute of Technology (KTH), Teknikringen 30, 10044 Stockholm (Sweden)
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  • Prof. Licheng Sun

    Corresponding author
    1. State Key Laboratory of Fine Chemicals, DUT–KTH Joint Education and Research Center on Molecular Devices, Dalian University of Technology (DUT), 2 Linggong Rd. 116024 Dalian (PR China), Fax: (+86) 411-83702185
    • State Key Laboratory of Fine Chemicals, DUT–KTH Joint Education and Research Center on Molecular Devices, Dalian University of Technology (DUT), 2 Linggong Rd. 116024 Dalian (PR China), Fax: (+86) 411-83702185
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Abstract

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Near-dye experience: Long, flexible carbon chains in the lateral anchoring groups of the donor part of a donor–π acceptor organic dye increase the power conversion efficiency dramatically. This performance enhancement can be ascribed to the prevention of the formation of molecular aggregates on the semiconductor nanoparticles, resulting in a lower recombination rate between transported electrons and I3 ions. A cell based on the new dye, HY113, gives a maximum IPCE value of 93 % at 660 nm.

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