• Journal of Semiconductors
  • Vol. 43, Issue 12, 122102 (2022)
Qihang Xiong1, Weifu Cen2、*, Xingtong Wu1, and Cong Chen3
Author Affiliations
  • 1College of Chemical Engineering, Guizhou Minzu University, Guiyang 550025, China
  • 2College of Materials Science and Engineering, Guizhou Minzu University, Guiyang 550025, China
  • 3College of Mechanical and Electrical Engineering, Guizhou Minzu University, Guiyang 550025, China
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    DOI: 10.1088/1674-4926/43/12/122102 Cite this Article
    Qihang Xiong, Weifu Cen, Xingtong Wu, Cong Chen. Effect of warpage on the electronic structure and optical properties of bilayer germanene[J]. Journal of Semiconductors, 2022, 43(12): 122102 Copy Citation Text show less
    (Color online) Schematic diagram of bilayer germanene structure.
    Fig. 1. (Color online) Schematic diagram of bilayer germanene structure.
    Band structure. (a)∆1 = 0.066 nm. (b)∆2 = 0.069 nm. (c)∆3 = 0.071 nm. (d)∆4 = 0.073 nm. (e)∆5 = 0.075 nm. (f)∆6 = 0.079 nm.
    Fig. 2. Band structure. (a)1 = 0.066 nm. (b)2 = 0.069 nm. (c)3 = 0.071 nm. (d)4 = 0.073 nm. (e)5 = 0.075 nm. (f)6 = 0.079 nm.
    (Color online) Density of states. (a)∆1 = 0.066 nm. (b)∆2 = 0.069 nm. (c)∆3 = 0.071 nm. (d)∆4 = 0.073 nm. (e)∆5 = 0.075 nm. (f)∆6 = 0.079 nm.
    Fig. 3. (Color online) Density of states. (a)1 = 0.066 nm. (b)2 = 0.069 nm. (c)3 = 0.071 nm. (d)4 = 0.073 nm. (e)5 = 0.075 nm. (f)6 = 0.079 nm.
    (Color online) Dielectric function. (a) Real part of the dielectric function. (b) Imaginary part of the dielectric function.
    Fig. 4. (Color online) Dielectric function. (a) Real part of the dielectric function. (b) Imaginary part of the dielectric function.
    (Color online) Refractive index. (a) Refractive index. (b) Extinction coefficient.
    Fig. 5. (Color online) Refractive index. (a) Refractive index. (b) Extinction coefficient.
    (Color online) Reflection and absorption. (a) Reflection. (b) Absorption.
    Fig. 6. (Color online) Reflection and absorption. (a) Reflection. (b) Absorption.
    Δ(nm)d (nm)dGe–Ge (nm)a (nm)Eg (eV)
    0.0660.42610.24280.40440.459
    0.0690.42460.24450.40590.450
    0.0710.42810.24340.40300.421
    0.0730.42690.24420.40360.417
    0.0750.41820.24460.40280.385
    0.0790.42050.24510.40190.260
    Table 1. Structural parameters of germanene: Interlayer distance (d), the distance between Ge atoms (dGe–Ge), lattice constant (a), warpage () and band gap (Eg).
    Qihang Xiong, Weifu Cen, Xingtong Wu, Cong Chen. Effect of warpage on the electronic structure and optical properties of bilayer germanene[J]. Journal of Semiconductors, 2022, 43(12): 122102
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