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  • Mechanical properties of lateral transition metal dichalcogenide heterostructures

    Author(s)
    Imani Yengejeh, S
    Wen, W
    Wang, Y
    Griffith University Author(s)
    Wang, Yun
    Imani Yengejeh, Sadegh
    Wen, William Y.
    Year published
    2021
    Metadata
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    Abstract
    Transition metal dichalcogenide (TMD) monolayers attract great attention due to their specific structural, electronic and mechanical properties. The formation of their lateral heterostructures allows a new degree of flexibility in engineering electronic and optoelectronic dervices. However, the mechanical properties of the lateral heterostructures are rarely investigated. In this study, a comparative investigation on the mechanical characteristics of 1H, 1T′ and 1H/1T′ heterostructure phases of different TMD monolayers including molybdenum disulfide (MoS2) molybdenum diselenide (MoSe2), Tungsten disulfide (WS2), and Tungsten ...
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    Transition metal dichalcogenide (TMD) monolayers attract great attention due to their specific structural, electronic and mechanical properties. The formation of their lateral heterostructures allows a new degree of flexibility in engineering electronic and optoelectronic dervices. However, the mechanical properties of the lateral heterostructures are rarely investigated. In this study, a comparative investigation on the mechanical characteristics of 1H, 1T′ and 1H/1T′ heterostructure phases of different TMD monolayers including molybdenum disulfide (MoS2) molybdenum diselenide (MoSe2), Tungsten disulfide (WS2), and Tungsten diselenide (WSe2) was conducted by means of density functional theory (DFT) calculations. Our results indicate that the impact of the lateral heterostructures has a relatively weak mechanical strength for all the TMD monolayers. The significant correlation between the mechanical properties of the TMD monolayers and their structural phases can be used to tune their stiffness of the materials. Our findings, therefore, suggest a novel strategy to manipulate the mechanical characteristics of TMDs by engineering their structural phases for their practical applications.
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    Journal Title
    Frontiers of Physics
    Volume
    16
    Issue
    1
    DOI
    https://doi.org/10.1007/s11467-020-1001-5
    Subject
    Physical Sciences
    Publication URI
    http://hdl.handle.net/10072/400407
    Collection
    • Journal articles

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