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Ordered Nanopillar Structured Electrodes for Depleted Bulk Heterojunction Colloidal Quantum Dot Solar Cells

Authors

  • Illan J. Kramer,

    1. Department of Electrical and Computer Engineering, University of Toronto, 10 King's College Road, Toronto, Ontario M5S 3G4, Canada
    Current affiliation:
    1. I.J.K and D.Z. contributed equally to this work.
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  • David Zhitomirsky,

    1. Department of Electrical and Computer Engineering, University of Toronto, 10 King's College Road, Toronto, Ontario M5S 3G4, Canada
    Current affiliation:
    1. I.J.K and D.Z. contributed equally to this work.
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  • John D. Bass,

    1. IBM Research Division, Almaden Research Center, 650 Harry Road, San Jose, CA 95120-6099, USA
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  • Philip M. Rice,

    1. IBM Research Division, Almaden Research Center, 650 Harry Road, San Jose, CA 95120-6099, USA
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  • Teya Topuria,

    1. IBM Research Division, Almaden Research Center, 650 Harry Road, San Jose, CA 95120-6099, USA
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  • Leslie Krupp,

    1. IBM Research Division, Almaden Research Center, 650 Harry Road, San Jose, CA 95120-6099, USA
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  • Susanna M. Thon,

    1. Department of Electrical and Computer Engineering, University of Toronto, 10 King's College Road, Toronto, Ontario M5S 3G4, Canada
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  • Alexander H. Ip,

    1. Department of Electrical and Computer Engineering, University of Toronto, 10 King's College Road, 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 Road, Toronto, Ontario M5S 3G4, Canada
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  • Ho-Cheol Kim,

    Corresponding author
    1. IBM Research Division, Almaden Research Center, 650 Harry Road, San Jose, CA 95120-6099, USA
    • IBM Research Division, Almaden Research Center, 650 Harry Road, San Jose, CA 95120-6099, USA
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  • Edward H. Sargent

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

A bulk heterojunction of ordered titania nanopillars and PbS colloidal quantum dots is developed. By using a pre-patterned template, an ordered titania nanopillar matrix with nearest neighbours 275 nm apart and height of 300 nm is fabricated and subsequently filled in with PbS colloidal quantum dots to form an ordered depleted bulk heterojunction exhibiting power conversion efficiency of 5.6%.

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