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- W2949855327 abstract "In this paper, the electronic and optical properties of the armchair SnSi (A-SnSi) nanoribbon based on first-principles calculations are studied. The atoms of this structure in edge are passivated with the hydrogen atoms. Our calculations show that there are three distinct families of A-SnSi nanoribbon, 3p − 1, 3p, and 3p + 1 (where p is an integer). All A-SnSi nanoribbon families show semiconductor behavior. The band gap energy for the case of 3p + 1 is greater than the other two groups. In addition, the dielectric function and absorption coefficient of this structure within the framework of the perturbation regime under the dipole transition approximation is calculated. The results show that the presence of the peaks in the imaginary part of the dielectric function corresponds to the band gap energy for each structure, and the intensity of the interband transition in smaller energies is higher. The electron-hole interactions are also calculated using GW-BSE method to exhibit the influence of the many-body interactions on the optical absorption spectrum. These features can be utilized to design nano-scale optoelectronic devices." @default.
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- W2949855327 date "2019-06-26" @default.
- W2949855327 modified "2023-09-27" @default.
- W2949855327 title "First principles study of electronic structure and optical properties of armchair SnSi nanoribbons" @default.
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- W2949855327 doi "https://doi.org/10.1088/2053-1591/ab2a5a" @default.
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