Fabrication and Luminescence of Monolayered Boron Nitride Quantum Dots

Authors

  • Liangxu Lin,

    1. Department of Materials Science and Engineering, University of Sheffield, Sir Robert Hadfield Building, Mappin Street, Sheffield S1 3JD, UK
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  • Yaoxian Xu,

    1. Department of Infection and Immunity, University of Sheffield, Beech Hill Road, Sheffield S10 2RX, UK
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  • Shaowei Zhang,

    Corresponding author
    1. College of Engineering, Mathematics and Physical Sciences, University of Exeter, Exeter EX4 4QF, UK
    • Shaowei Zhang, College of Engineering, Mathematics and Physical Sciences, University of Exeter, Exeter EX4 4QF, UK.

      Dan A. Allwood, Department of Materials Science and Engineering, University of Sheffield, Sir Robert Hadfield Building, Mappin Street, Sheffield S1 3JD, UK

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  • Ian M. Ross,

    1. Department of Electronic and Electrical Engineering, University of Sheffield, Mappin Street, Sheffield, S1 3JD, UK
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  • Albert C. M. Ong,

    1. Department of Infection and Immunity, University of Sheffield, Beech Hill Road, Sheffield S10 2RX, UK
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  • Dan A. Allwood

    Corresponding author
    1. Department of Materials Science and Engineering, University of Sheffield, Sir Robert Hadfield Building, Mappin Street, Sheffield S1 3JD, UK
    • Shaowei Zhang, College of Engineering, Mathematics and Physical Sciences, University of Exeter, Exeter EX4 4QF, UK.

      Dan A. Allwood, Department of Materials Science and Engineering, University of Sheffield, Sir Robert Hadfield Building, Mappin Street, Sheffield S1 3JD, UK

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Abstract

original image

Monolayered boron nitride (BN) quantum dots (QDs; lateral size ≈10 nm) are fabricated using a novel method. Unlike monolayered BN sheets, these BN QDs exhibit blue-green luminescence due to defects formed during preparation. This optical behavior adds significant functionality to a material that is already receiving much attention. It is further shown that the QDs are nontoxic to biological cells and well suited to bio-imaging.

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