Resumen de Effects of an external electric field on the electronic and optical properties of a Cylindrical ZnS/ZnO multi-layer quantum dot with a parabolic potential (11 pages)
M. El Khou, M. Rzaizi, E.A. Ibnouelghazi, D. Abouelaoualim
Within the framework of the effective mass approximation, a detailed investigation on the effects of an external electrostatic field on the electronic and optical properties of a multi-layer cylindrical ZnS/ZnO quantum dot. We fixed the height and radious to 10 nm and 5 nm respectively, while modeling the ZnO wells using a parabolic potential. Numerical results were generated using the finite difference method (FDM), as we were able to compute different confinement energies, probability densities and expectation value of the electrostatic field potential while we vary the electric field strength F, for both the ground state and first excited state, and finishes by deducing the transition energy, transition dipole moment (TDM) and the absorption coefficient (AC) while taking into account multiple layer thickness configurations. The results show that varying the electrostatic field strength does has an noticeable impact on the electronic and optical properties while all other inputs are kept unchanged.
