The Influence of the Confinement Potential on the Energenic spectra of the Excitonic Complexes in Core/Shell Nanowires

Author: Zaal Machavariani
Co-authors: Roman Kezerashvili, Tamar Tchelidze, Bachana Beradze
Keywords: Trions, Nanowire, Biexciton
Annotation:

A study of the trion and biexciton in a nanowire (NW) in the framework of the effective-mass model is presented. Our model of the formation of trions and biexcitons is based on the two-center problem in quasi-one dimensional systems like classical quantum mechanical treatment of hydrogen molecular ion and hydrogen molecule as well. We consider the formation quasi-one dimensional trions and biexcitons under the action of both the lateral confinement and the localization potential. The problem is solved numerically by numerical integration of the corresponding Schrödinger equation. This allows us in fact for arbitrary shaped confinement potential calculate the corresponding wavefunctions and energy spectrum of the system. By doing this we have investigated the influence of the defects in formation of nanowires such as for instance diffusion depth of the core material on the energy spectrum of the excitonic complexes.