Direct Synthesis of Graphene Quantum Dots by Chemical Vapor Deposition

Authors

  • Lili Fan,

    1. School of Materials Science and Engineering, Key Laboratory for Advanced Materials, Processing Technology, Tsinghua University, Beijing, China
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  • Miao Zhu,

    1. School of Materials Science and Engineering, Key Laboratory for Advanced Materials, Processing Technology, Tsinghua University, Beijing, China
    2. Center for Nano and Micro Mechanics, Tsinghua University, Beijing, China
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  • Xiao Lee,

    1. School of Materials Science and Engineering, Key Laboratory for Advanced Materials, Processing Technology, Tsinghua University, Beijing, China
    2. Center for Nano and Micro Mechanics, Tsinghua University, Beijing, China
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  • Rujing Zhang,

    1. School of Materials Science and Engineering, Key Laboratory for Advanced Materials, Processing Technology, Tsinghua University, Beijing, China
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  • Kunlin Wang,

    1. School of Materials Science and Engineering, Key Laboratory for Advanced Materials, Processing Technology, Tsinghua University, Beijing, China
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  • Jinquan Wei,

    1. School of Materials Science and Engineering, Key Laboratory for Advanced Materials, Processing Technology, Tsinghua University, Beijing, China
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  • Minlin Zhong,

    1. School of Materials Science and Engineering, Key Laboratory for Advanced Materials, Processing Technology, Tsinghua University, Beijing, China
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  • Dehai Wu,

    1. School of Materials Science and Engineering, Key Laboratory for Advanced Materials, Processing Technology, Tsinghua University, Beijing, China
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  • Hongwei Zhu

    Corresponding author
    1. Center for Nano and Micro Mechanics, Tsinghua University, Beijing, China
    • School of Materials Science and Engineering, Key Laboratory for Advanced Materials, Processing Technology, Tsinghua University, Beijing, China
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E-mail: hongweizhu@tsinghua.edu.cn

Abstract

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A bottom-up method to fabricate uniformly dispersed graphene quantum dots (GQDs) by atmospheric pressure CVD on copper substrates is reported. The size distribution of the GQDs can be controlled by carefully tuning the CVD growth parameters. Additionally, the GQDs can easily be transferred to other large-scale substrates and the fabrication process is relatively simple and convenient. The GQDs deposited on transparent substrates show well-known excitation-dependent photoluminescence behavior.

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