Band structure and optical properties of antimony-sulfobromide: density functional calculation |
| |
Authors: | Harun Akkus Amirullah M. Mamedov Ali Kazempour Hadi Akbarzadeh |
| |
Affiliation: | (1) Department of Physics, Yuzuncu Yil University, 65080 Van, Turkey;(2) Department of Physics, Cukurova University, 01330 Adana, Turkey;(3) Department of Physics, Isfahan University of Technology, Isfahan 84156, Iran |
| |
Abstract: | The electronic structure, linear, and non-linear optical properties of ferroelectric-semiconductor SbSBr are investigated in the non-polar (paraelectric) and polar (ferroelectric) phase, using the density functional methods in the generalized gradient approximation. The electronic band structure obtained shows that SbSBr has an indirect forbidden gap of 2.16 and 2.21 eV in the paraelectric and ferroelectric phase, respectively. The linear photon-energy dependent dielectric functions and some optical functions, such as absorption and extinction coefficients, refractive index, energy-loss function, reflectivity, and optical conductivity in both phases and photon-energy dependent second-order susceptibilities in the ferroelectric phase are calculated. Moreover, some important optical parameters, such as the effective number of valence electrons and the effective optical dielectric constant, are calculated in both phases. |
| |
Keywords: | SbSBr ferroelectric semiconductor optical properties electronic structure |
本文献已被 SpringerLink 等数据库收录! |
|