Mechanism Studies on the Superior Optical Limiting Observed in Graphene Oxide Covalently Functionalized with Upconversion NaYF4:Yb3+/Er3+ Nanoparticles

Authors

  • Tingchao He,

    1. Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
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  • Wei Wei,

    1. School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore 637457, Singapore
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  • Lin Ma,

    1. Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
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  • Rui Chen,

    1. Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
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  • Shixin Wu,

    1. School of Materials Science and Engineering, Singapore 639798
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  • Hua Zhang,

    1. School of Materials Science and Engineering, Singapore 639798
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  • Yanhui Yang,

    1. School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore 637457, Singapore
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  • Jan Ma,

    1. School of Materials Science and Engineering, Singapore 639798
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  • Ling Huang,

    Corresponding author
    1. School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore 637457, Singapore
    • School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore 637457, Singapore
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  • Gagik G. Gurzadyan,

    Corresponding author
    1. Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
    • Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore.
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  • Handong Sun

    Corresponding author
    1. Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
    • Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore.
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Abstract

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Superior optical limiting (OL) characteristics and mechanisms are explored in a novel nanocomposite made from graphene oxide (GO) and NaYF4:Yb3+/Er3+ nanoparticles via covalent chemical bonding. Due to the synergistic effect of enhanced nonlinear scattering, two-photon absorption, and efficient energy transfer between NaYF4:Yb3+/Er3+ nanoparticles and GO, the nanocomposite displays dramatically improved OL effects compared to either GO or NaYF4:Yb3+/Er3+ nanoparticles, making it a very promising material for practical OL devices.

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