Original scientific paper

Electron and hole confinement states in quantum dot disc

M. H. Hekmat ; Theoretical Physics Department, National Research Center, Cairo, Egypt
A. Elmeshad Nagwa ; Theoretical Physics Department, National Research Center, Cairo, Egypt
S.A. Safwan ; Theoretical Physics Department, National Research Center, Cairo, Egypt

Abstract

The ground-state energies of an electron and of a hole in a finite-potential quantum dot disc of GaAs are calculated. Solving the Schrödinger equation for the two particles separately, we calculated the first two excited states for each one. To study the effect of the disc dimensionality on the eigen-energies, we considered different discs with different values of radius (R) and width (L). Discussing the potential effect, we examined the eigen-value behaviour at different values of the barrier heights. The corresponding wave functions are obtained.

Keywords

GaAs; quantum dot; electron; hole; first two excited states; barrier heights

Hrčak ID:

301652

URI

https://hrcak.srce.hr/301652

Publication date:

1.3.2004.

Article data in other languages: croatian

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