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    ScienceDirect
    https://www.sciencedirect.com › science › article › pii

    Structural and electronic properties of the α-GeSe surface

    • We have investigated the structural and electronic properties of the α-GeSe surface using atomic force microscopy, scanning tunneling microscopy and density functional theory calculations. GeSe belongs t… 展开

    Highlights

    ••
    There is a substantial charge transfer from the Ge to the Se surface … 展开

    ScienceDirect
    1. Introduction

    Sparked by the discovery of graphene [1], [2], a single layer of sp2 carbon atoms arranged in a honeycomb structure, tremendous attention has been paid to other two-dimen… 展开

    ScienceDirect
    2. Experimental

    The α-GeSe crystal was purchased from HQ Graphene (Groningen, The Netherlands). The lattice parameters of GeSe have been determined by X-ray diffraction meas… 展开

    ScienceDirect
    3. Results and discussion

    In Fig. 1(a) a large scale AFM image of an α-GeSe surface is shown. Several step edges, which mainly run from the top of the image to the bottom of the image, can be discerned. The h… 展开

    ScienceDirect
    4. Conclusions

    The structural and electronic properties of the α-GeSe surface has been investigated with atomic force microscopy, scanning tunneling microscopy and spectroscopy. Filled-state scan… 展开

    ScienceDirect
    What is -GeSE surface?
    There is a substantial charge transfer from the Ge to the Se surface atoms of the α-GeSe surface. The α-GeSe surface is stable against oxidation. The α-GeSe surface is virtually defect - and impurity-free. The α-GeSe surface is a p -type semiconductor with a band gap of 1.0 eV and a work function of 4.7 eV.
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