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Controllable Co-segregation Synthesis of Wafer-Scale Hexagonal Boron Nitride Thin Films

Authors

  • Chaohua Zhang,

    1. Center for Nanochemistry, Beijing National Laboratory for Molecular Sciences, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, College of Chemistry and Molecular Engineering, Academy for Advanced Interdisciplinary Studies, Peking University, Beijing, P. R. China
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  • Lei Fu,

    1. Center for Nanochemistry, Beijing National Laboratory for Molecular Sciences, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, College of Chemistry and Molecular Engineering, Academy for Advanced Interdisciplinary Studies, Peking University, Beijing, P. R. China
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  • Shuli Zhao,

    1. Center for Nanochemistry, Beijing National Laboratory for Molecular Sciences, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, College of Chemistry and Molecular Engineering, Academy for Advanced Interdisciplinary Studies, Peking University, Beijing, P. R. China
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  • Yu Zhou,

    1. Center for Nanochemistry, Beijing National Laboratory for Molecular Sciences, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, College of Chemistry and Molecular Engineering, Academy for Advanced Interdisciplinary Studies, Peking University, Beijing, P. R. China
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  • Hailin Peng,

    Corresponding author
    1. Center for Nanochemistry, Beijing National Laboratory for Molecular Sciences, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, College of Chemistry and Molecular Engineering, Academy for Advanced Interdisciplinary Studies, Peking University, Beijing, P. R. China
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  • Zhongfan Liu

    Corresponding author
    1. Center for Nanochemistry, Beijing National Laboratory for Molecular Sciences, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, College of Chemistry and Molecular Engineering, Academy for Advanced Interdisciplinary Studies, Peking University, Beijing, P. R. China
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Abstract

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A facile and scalable co-segregation method is used to grow hexagonal boron nitride (h-BN) thin films from B- and N-containing metals. By annealing the sandwiched metal substrates in vacuum, sub-monolayer h-BN flakes, monolayer h-BN films, and multilayer h-BN thin films of varying thickness are successfully prepared. This approach follows an underneath-growth mode and exhibits good thickness- and location-control.

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