Centimeter-sized 2D alpha-MoO3 single crystal: growth, Raman anisotropy, and optoelectronic properties

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DOI

  • Binjie Zheng, University of Electronic Science and Technology of China
  • ,
  • Zegao Wang
  • ,
  • Yuanfu Chen, University of Electronic Science and Technology of China
  • ,
  • Wanli Zhang, University of Electronic Science and Technology of China
  • ,
  • Xuesong Li, University of Electronic Science and Technology of China

Centimeter-sized 2D layered alpha-MoO3 single crystal has been grown by a facile physical vapor deposition method. The lateral size of alpha-MoO3 single crystals can be tunable from micrometer to centimeter by controlling the inner diameter of the quartz tube reaction chamber. The as-grown alpha-MoO3 exhibits strong in-plane Raman anisotropy, where A(g) Raman modes give the direction of crystallographic orientation, which can be used to rapidly and precisely identify the crystallinity of large-area alpha-MoO3 through selected-area angel-resolved polarized Raman spectroscopy. Moreover, the photodetectors based on annealed alpha-MoO3 single crystals exhibit excellent optoelectronic performance with a photoresponsivity of 65.6 A W-1 and a fast photoresponse time of 2 s.

Original languageEnglish
Article number045011
Journal2D materials
Volume5
Issue4
Number of pages8
ISSN2053-1583
DOIs
Publication statusPublished - 25 Jul 2018

    Research areas

  • two-dimensional semiconductor, physical vapor deposition, molybdenum trioxide, Raman anisotropy, photoresponse, BLACK PHOSPHORUS, MOLYBDENUM OXIDE, NANOSHEETS, SPECTROSCOPY, DEPENDENCE, SCATTERING, MECHANISM, GRAPHENE, MOS2

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