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Electronic Tuning of Nickel-Based Bis(dicarbollide) Redox Shuttles in Dye-Sensitized Solar Cells

Authors

  • Alexander M. Spokoyny,

    1. Department of Chemistry and the International Institute for Nanotechnology, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208 (USA)
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    • These authors contributed equally to this work.

  • Tina C. Li,

    1. Department of Chemistry and Argonne-Northwestern Solar Energy Research Center (ANSER), Northwestern University, 2145 Sheridan Road, Evanston, IL 60208 (USA)
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    • These authors contributed equally to this work.

  • Omar K. Farha Prof.,

    1. Department of Chemistry and the International Institute for Nanotechnology, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208 (USA)
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  • Charles W. Machan,

    1. Department of Chemistry and the International Institute for Nanotechnology, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208 (USA)
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  • Chunxing She Dr.,

    1. Department of Chemistry and Argonne-Northwestern Solar Energy Research Center (ANSER), Northwestern University, 2145 Sheridan Road, Evanston, IL 60208 (USA)
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  • Charlotte L. Stern,

    1. Department of Chemistry and the International Institute for Nanotechnology, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208 (USA)
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  • Tobin J. Marks Prof.,

    1. Department of Chemistry and Argonne-Northwestern Solar Energy Research Center (ANSER), Northwestern University, 2145 Sheridan Road, Evanston, IL 60208 (USA)
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  • Joseph T. Hupp Prof.,

    1. Department of Chemistry and the International Institute for Nanotechnology, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208 (USA)
    2. Department of Chemistry and Argonne-Northwestern Solar Energy Research Center (ANSER), Northwestern University, 2145 Sheridan Road, Evanston, IL 60208 (USA)
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  • Chad A. Mirkin Prof.

    1. Department of Chemistry and the International Institute for Nanotechnology, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208 (USA)
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  • J.T.H. and T.J.M. gratefully acknowledge the support of BP Solar. T.J.M. also acknowledges the support of the Energy Frontier Research Center (DE-SC0001059) at the ANSER Center of Northwestern University. J.T.H. also thanks the U.S. DOE (Grant No. DE-FG02-87ER13808) for funding. C.A.M. acknowledges the DOE Office (Award No. DE-SC0000989) for support via the NU Non-equilibrium Energy Research Center. C.A.M. is also grateful for support from the U.S. ARO.

Abstract

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Redox “B”ees: Rational design of a new series of boron-functionalized NiIII/NiIV–bis(dicarbollide) clusters results in a family of robust and tunable redox shuttles (see diagram; EDG and EWG denote electron-donating and -withdrawing groups, respectively). This offers a means to rationally control the redox properties in dye-sensitized solar cells (DSCs), leading to exceptionally high open-circuit voltages.

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