Infrared relative dielectric permittivity and refractive index on the spherical CdSe/ZnS heteronanocrystals with self-consistent field

Abstract

We deal with allowed-subband quantum states of two-electron in a semiconductor spherical core/shell quantum dot. Within framework of the infrared transitions, solving the Schrödinger-Poisson equation for repulsive interactions on the conduction-subbands, we obtain energy shifts in the absorption peaks of dielectric functions . The energy eigenvalues of the CdSe/ZnS nanocrystal have been computed as a function of the layer thicknesses through self-consistent field. The optical absorption transitions related to D − and D 0 donor states, have been plotted considering linear dielectric permittivity. The obtained values of dielectric constant for CdSe monolayers are compared with 3D simulation results. Refractive index and absorption coefficient under 3.0 nm CdSe core radius have been also presented as a function of infrared photon energies.