Chouef Soufiane, Hbibi Mohammed, Boussetta Reda, El Moussaouy Abdelaziz, Falyouni Farid, Mommadi Omar, Duque Carlos Alberto
OAPM Group, Laboratory of Materials, Waves, Energy and Environment, Department of Physics, Faculty of Sciences, University Mohamed I, Oujda 60000, Morocco.
MEGCE Group, Laboratory of Materials, Waves, Energy and Environment, Department of Physics, Faculty of Sciences, University Mohamed I, Oujda 60000, Morocco.
Nanomaterials (Basel). 2024 Dec 26;15(1):15. doi: 10.3390/nano15010015.
Using the effective mass approximation and the finite difference method, we examined the linear, non-linear, and total optical absorption coefficients (OAC), as well as the relative refractive index coefficients (RIC) variations for an off-center shallow donor impurity in a 2D-curved electronic nanostructure subjected to external electric and magnetic fields. Our results reveal that the peak positions of the OAC and RIC are susceptible to the geometrical angles, the impurity position, and the strength of the applied electric and magnetic fields. In particular, the positions of the OAC and RIC peaks can be shifted towards blue or red by adjusting the geometric angle. In addition, the amplitudes of these peaks are influenced by the application of external fields and by the position of the impurity. This knowledge is essential for understanding and optimizing the optical characteristics of 2D-Curved nanostructure for advanced optoelectronic applications.
利用有效质量近似和有限差分法，我们研究了二维弯曲电子纳米结构中偏心浅施主杂质在外部电场和磁场作用下的线性、非线性和总光吸收系数（OAC）以及相对折射率系数（RIC）的变化。我们的结果表明，OAC和RIC的峰值位置易受几何角度、杂质位置以及外加电场和磁场强度的影响。特别是，通过调整几何角度，OAC和RIC峰值的位置可以向蓝光或红光方向移动。此外，这些峰值的幅度受外部场的施加和杂质位置的影响。这些知识对于理解和优化用于先进光电子应用的二维弯曲纳米结构的光学特性至关重要。
