Stark effect in diffused quantum wells

We study the longitudinal Stark effect in diffused AlGaAs/GaAs quantum wells grown along the [1,0,0] direction. The energies of the ground electron and hole states and the first excited hole state are calculated for different diffusion lengths and electric field strengths. The energies of the main o...

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Bibliographic Details
Published in:Superlattices and microstructures 1999-11, Vol.26 (5), p.325-332
Main Authors: Vlaev, S.J., Miteva, A.M., Contreras-Solorio, D.A., Velasco, V.R.
Format: Article
Language:English
Subjects:
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Electron states and collective excitations in multilayers, quantum wells, mesoscopic, and nanoscale systems
Electron states and collective excitations in thin films, multilayers, quantum wells, mesoscopic and nanoscale systems
Electronic structure and electrical properties of surfaces, interfaces, thin films and low-dimensional structures
Exact sciences and technology
Physics
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Summary:We study the longitudinal Stark effect in diffused AlGaAs/GaAs quantum wells grown along the [1,0,0] direction. The energies of the ground electron and hole states and the first excited hole state are calculated for different diffusion lengths and electric field strengths. The energies of the main optical transitions and their Stark shifts are found. The intensities of the transitions are considered in terms of the bound states spatial distributions. The calculations are carried out within the semi-empirical sp3s*tight-binding model including spin and the surface Green function matching method. We compare our results with those obtained by means of other theoretical methods.
ISSN:0749-6036
1096-3677
DOI:10.1006/spmi.1999.0786