Open AccessZnTe/CdSe type-II core/shell spherical quantum dot under an external electric field
Author(s) -
A. Chafai,
I. Essaoudi,
A. Ainane,
F. Dujardin,
Ramesh C. Ahuja
Publication year - 2018
Publication title -
materials and devices
Language(s) - English
Resource type - Journals
ISSN - 2495-3911
DOI - 10.23647/ca.md20180504
Subject(s) - electric field , shell (structure) , quantum dot , radius , condensed matter physics , nanostructure , physics , electron , core (optical fiber) , materials science , quantum mechanics , optics , computer science , composite material , computer security
We have investigated in the framework of the envelope function approximation and taking into account the dependence of the electron effective mass on radius the energy of an electron inside a ZnTe/CdSecore/shell spherical quantum dot. In order to make the problem more realistic, we describe the conduction band-edge alignment between core and shell materials by a finite height barrier. By applying the Ritz variational principle the effect of the electric field on the electronic states was also examined. Our numerical results show the opportunity to control the energy states position of the charge carriers inside our core/shell nanostructures by controlling the size (core radius, shell thickness) of the nanostructure and the strength of the external electric field. #CORE/SHELL MATERIALS #NANOSTRUCTURES #QUANTUM DOTS #ELECTRIC FIELD