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Rapid visualization of grain boundaries in monolayer MoS2 by multiphoton microscopy

Author

Listed:
  • Lasse Karvonen

    (Aalto University)

  • Antti Säynätjoki

    (Aalto University
    Institute of Photonics, University of Eastern Finland)

  • Mikko J. Huttunen

    (University of Ottawa)

  • Anton Autere

    (Aalto University)

  • Babak Amirsolaimani

    (College of Optical Sciences, University of Arizona)

  • Shisheng Li

    (National University of Singapore)

  • Robert A. Norwood

    (College of Optical Sciences, University of Arizona)

  • Nasser Peyghambarian

    (Aalto University
    Institute of Photonics, University of Eastern Finland
    College of Optical Sciences, University of Arizona)

  • Harri Lipsanen

    (Aalto University)

  • Goki Eda

    (National University of Singapore)

  • Khanh Kieu

    (College of Optical Sciences, University of Arizona)

  • Zhipei Sun

    (Aalto University)

Abstract

Grain boundaries have a major effect on the physical properties of two-dimensional layered materials. Therefore, it is important to develop simple, fast and sensitive characterization methods to visualize grain boundaries. Conventional Raman and photoluminescence methods have been used for detecting grain boundaries; however, these techniques are better suited for detection of grain boundaries with a large crystal axis rotation between neighbouring grains. Here we show rapid visualization of grain boundaries in chemical vapour deposited monolayer MoS2 samples with multiphoton microscopy. In contrast to Raman and photoluminescence imaging, third-harmonic generation microscopy provides excellent sensitivity and high speed for grain boundary visualization regardless of the degree of crystal axis rotation. We find that the contrast associated with grain boundaries in the third-harmonic imaging is considerably enhanced by the solvents commonly used in the transfer process of two-dimensional materials. Our results demonstrate that multiphoton imaging can be used for fast and sensitive characterization of two-dimensional materials.

Suggested Citation

  • Lasse Karvonen & Antti Säynätjoki & Mikko J. Huttunen & Anton Autere & Babak Amirsolaimani & Shisheng Li & Robert A. Norwood & Nasser Peyghambarian & Harri Lipsanen & Goki Eda & Khanh Kieu & Zhipei Su, 2017. "Rapid visualization of grain boundaries in monolayer MoS2 by multiphoton microscopy," Nature Communications, Nature, vol. 8(1), pages 1-8, August.
    • Handle: RePEc:nat:natcom:v:8:y:2017:i:1:d:10.1038_ncomms15714
    DOI: 10.1038/ncomms15714
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    Cited by:

    1. Lu Li & Qinqin Wang & Fanfan Wu & Qiaoling Xu & Jinpeng Tian & Zhiheng Huang & Qinghe Wang & Xuan Zhao & Qinghua Zhang & Qinkai Fan & Xiuzhen Li & Yalin Peng & Yangkun Zhang & Kunshan Ji & Aomiao Zhi , 2024. "Epitaxy of wafer-scale single-crystal MoS2 monolayer via buffer layer control," Nature Communications, Nature, vol. 15(1), pages 1-9, December.

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