Synthesis and Optical Properties of Large-Area Single-Crystalline 2D Semiconductor WS2 Monolayer from Chemical Vapor Deposition

Authors

  • Chunxiao Cong,

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

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

    1. SEU-FEI Nano-Pico Center, Key Laboratory of MEMS of Ministry of Education School of Electrical Science and Engineering, Southeast University, Nanjing, China
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  • Bingchen Cao,

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

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

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

    1. SEU-FEI Nano-Pico Center, Key Laboratory of MEMS of Ministry of Education School of Electrical Science and Engineering, Southeast University, Nanjing, China
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  • Ting Yu

    Corresponding author
    1. Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore, Singapore
    2. Department of Physics, Faculty of Science, National University of Singapore, Singapore
    3. Graphene Research Center, National University of Singapore, Singapore
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Abstract

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Large-area triangular single crystals of WS2 monolayer are synthesised from a chemical vapor deposition process and their optical properties are systematicly studied. This work paves the way to fabricate large-area single crystalline 2D semiconductors and study their fundamentals. It must be very meaningful for exploiting the great potential of WS2 for future optoelectronics.

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