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Efficient Organic-Dye-Sensitized Solar Cells Based on an Iodine-Free Electrolyte

Authors

  • Dr. Haining Tian,

    1. Organic Chemistry, Center of Molecular Devices, Department of Chemistry, KTH Chemical Science and Engineering, 10044 Stockholm (Sweden), Fax: (+46) 8-791-2333
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  • Dr. Xiao Jiang,

    1. Inorganic Chemistry, Center of Molecular Devices, Department of Chemistry, KTH Chemical Science and Engineering, 10044 Stockholm (Sweden)
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  • Ze Yu,

    1. Inorganic Chemistry, Center of Molecular Devices, Department of Chemistry, KTH Chemical Science and Engineering, 10044 Stockholm (Sweden)
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  • Prof. Lars Kloo,

    1. Inorganic Chemistry, Center of Molecular Devices, Department of Chemistry, KTH Chemical Science and Engineering, 10044 Stockholm (Sweden)
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  • Prof. Anders Hagfeldt,

    1. Inorganic Chemistry, Center of Molecular Devices, Department of Chemistry, KTH Chemical Science and Engineering, 10044 Stockholm (Sweden)
    2. Department of Physical and Analytical Chemistry, Uppsala University, 75105 Uppsala (Sweden)
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  • Prof. Licheng Sun

    1. Organic Chemistry, Center of Molecular Devices, Department of Chemistry, KTH Chemical Science and Engineering, 10044 Stockholm (Sweden), Fax: (+46) 8-791-2333
    2. State Key Laboratory of Fine Chemicals, DUT-KTH Joint Education and Research Center on Molecular Devices, Dalian University of Technology (DUT), Dalian 116012 (China)
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  • This work was supported by the Swedish Research Council, the Swedish Energy Agency, and the Knut and Alice Wallenberg Foundation. Z.Y. also would like to acknowledge the Chinese Scholarship Council (CSC) for financial support. We would like to thank Lianpeng Tong and Samir Andersson at Royal Institute of Technology (KTH) for the MS measurements and Dr. Leif Häggman at Uppsala University for supplying the TiO2 paste. We also thank Lele Duan and Martin Karlsson at KTH for their helpful discussions. The authors declare no competing financial interests.

Abstract

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Deiodized salt: An organic redox couple (McMT/BMT) was adopted for application in dye-sensitized solar cells. Based on a low-cost organic dye, TH305, an efficiency of 4.0 % was achieved under simulated sunlight (100 mW cm−2). Photoelectrochemical measurements provided insights into the difference between the organic redox couple and traditional iodine-based electrolytes.

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