Optoelectronic properties of an off-center donor atom in a wedge-shaped quantum dot under the combined effect of electric and magnetic fields

被引：6
作者：
Chnafi M. [1 ]
Mommadi O. [1 ]
El Moussaouy A. [1 ,3 ]
Chouef S. [1 ]
Boussetta R. [2 ]
Hbibi M. [1 ]
Duque C.A. [4 ]
Falyouni F. [1 ]
机构：
[1] OAPM group, Laboratory of Materials, Waves, Energy and Environment, Department of Physics, Faculty of Sciences, University Mohamed I, Oujda
[2] MEGCE group, Laboratory of Materials, Waves, Energy and Environment, Department of Physics, Faculty of Sciences, University Mohamed I, Oujda
[3] Laboratory of Innovation in Science, Technologie and Education, CRMEF, Oujda
[4] Grupo de Materia Condensada-UdeA, Instituto de Física, Facultad de Ciencias Exactas y Naturales, Universidad de Antioquia UdeA, Calle 70 No. 52-21, Medellín
来源：
Optik | 2024年 / 310卷
关键词：
Dipole element matrix; Donor atom; Electric field; Energy transition; Magnetic field; Optical absorption coefficients; Wedge-shaped quantum dot;
D O I：
10.1016/j.ijleo.2024.171881
中图分类号：
学科分类号：
摘要：
In this study, we use the effective mass approximation and the finite difference method to investigate the optoelectronic properties of a donor impurity confined in a wedge-shaped quantum dot (WSQD). We analyze the energy transitions, dipole element matrix, and linear, nonlinear, and total absorption coefficients. The influence of electric and magnetic fields, as well as the displacement of the donor atom along the WSQD's axis, are considered. The numerical calculations reveal that the transition energy and dipole matrix element are significantly affected by the size and shape of the WSQD, along with the position of the impurity. Our results provide valuable insights for optimizing the performance of optoelectronic devices, such as photodetectors and lasers, by adjusting the size and shape of WSQDs. © 2024 Elsevier GmbH
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