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Electron Acceptor Materials Engineering in Colloidal Quantum Dot Solar Cells

Authors

  • Huan Liu,

    1. Department of Electrical and Computer Engineering, University of Toronto, 10 King's College Rd., Toronto, Ontario M5S 3G4, Canada
    2. Department of Electronic Science and Technology, Huazhong University of Science and Technology, 1037 Luoyu Rd., Wuhan, Hubei 430074, China
    Current affiliation:
    1. H.L. and J.T. contributed equally to this work.
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  • Jiang Tang,

    1. Department of Electrical and Computer Engineering, University of Toronto, 10 King's College Rd., Toronto, Ontario M5S 3G4, Canada
    Current affiliation:
    1. H.L. and J.T. contributed equally to this work.
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  • Illan J. Kramer,

    1. Department of Electrical and Computer Engineering, University of Toronto, 10 King's College Rd., Toronto, Ontario M5S 3G4, Canada
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  • Ratan Debnath,

    1. Department of Electrical and Computer Engineering, University of Toronto, 10 King's College Rd., Toronto, Ontario M5S 3G4, Canada
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  • Ghada I. Koleilat,

    1. Department of Electrical and Computer Engineering, University of Toronto, 10 King's College Rd., Toronto, Ontario M5S 3G4, Canada
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  • Xihua Wang,

    1. Department of Electrical and Computer Engineering, University of Toronto, 10 King's College Rd., Toronto, Ontario M5S 3G4, Canada
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  • Armin Fisher,

    1. Department of Electrical and Computer Engineering, University of Toronto, 10 King's College Rd., Toronto, Ontario M5S 3G4, Canada
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  • Rui Li,

    1. Department of Electrical and Computer Engineering, University of Toronto, 10 King's College Rd., Toronto, Ontario M5S 3G4, Canada
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  • Lukasz Brzozowski,

    1. Department of Electrical and Computer Engineering, University of Toronto, 10 King's College Rd., Toronto, Ontario M5S 3G4, Canada
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  • Larissa Levina,

    1. Department of Electrical and Computer Engineering, University of Toronto, 10 King's College Rd., Toronto, Ontario M5S 3G4, Canada
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  • Edward H. Sargent

    Corresponding author
    1. Department of Electrical and Computer Engineering, University of Toronto, 10 King's College Rd., Toronto, Ontario M5S 3G4, Canada
    • Department of Electrical and Computer Engineering, University of Toronto, 10 King's College Rd., Toronto, Ontario M5S 3G4, Canada.
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Abstract

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Lead sulfide colloidal quantum dot (CQD) solar cells with a solar power conversion efficiency of 5.6% are reported. The result is achieved through careful optimization of the titanium dioxide electrode that serves as the electron acceptor. Metal-ion-doped sol-gel-derived titanium dioxide electrodes produce a tunable-bandedge, well-passivated materials platform for CQD solar cell optimization.

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