https://doi.org/10.1140/epjp/s13360-024-05418-2
Regular Article
The influence of the dielectric surrounding medium on energy levels and optical responses of an on-center impurity in a core/shell spherical nanodot
1
SIGER Laboratory, Faculty of Sciences and Technology, Sidi Mohamed Ben Abdellah University, 2202, Fez, Morocco
2
LPS Laboratory, Faculty of Science Dhar El Mahraz, Sidi Mohamed Ben Abdellah University, 1796, Fez, Morocco
3
Laboratoire de La Matière Condensée et des Nanosciences (LMCN), Département de Physique, Faculté des Sciences de Monastir, 5019, Monastir, Tunisia
4
Grupo de Materia Condensada-UdeA, Instituto de Fisica, Facultad de Ciencias Exactas y Naturales, Universidad de Antioquia UdeA, Calle 70 No. 52-21, Medellin, Colombia
a
ayoub.eddahmouny@usmba.ac.ma
Received:
14
March
2023
Accepted:
1
July
2024
Published online:
9
July
2024
In the context of effective mass approximation and using the finite element method, we studied the optical properties of a hydrogenic donor impurity centered in a core/shell spherical GaAs/AlGaAs quantum dots capped in a dielectric surrounding medium. We accounted for the radial dependency of the permittivity in our model. The fundamental inter-subband optical transition is thought to occur between the calculated ground state 1s, and the first excited electronic state denoted 2p. Our computational results reveal that the composition of the dielectric surrounding medium seriously influences the adjustment of the peaks of the linear and nonlinear optical coefficients. Our findings also reveal that the magnitude of the total absorption coefficient and third-order nonlinear optical susceptibility increase in the case of polyvinyl alcohol dielectric surrounding medium, indicating that it is desirable for use as a dielectric surrounding medium due to its rigidity and greater dielectric constant.
Copyright comment Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2024. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
