Excitons and charged excitons in semiconductor quantum wells
- Departement Natuurkunde, Universiteit Antwerpen (UIA), B-2610 Antwerpen, (Belgium)
- Physics Department, Argonne National Laboratories, Argonne, Illinois 60439 (United States)
A variational calculation of the ground-state energy of neutral excitons and of positively and negatively charged excitons (trions) confined in a single-quantum well is presented. We study the dependence of the correlation energy and of the binding energy on the well width and on the hole mass. The conditional probability distribution for positively and negatively charged excitons is obtained, providing information on the correlation and the charge distribution in the system. A comparison is made with available experimental data on trion binding energies in GaAs-, ZnSe-, and CdTe-based quantum well structures, which indicates that trions become localized with decreasing quantum well width. (c) 2000 The American Physical Society.
- Research Organization:
- Argonne National Lab. (ANL), Argonne, IL (United States)
- OSTI ID:
- 20216563
- Journal Information:
- Physical Review. B, Condensed Matter and Materials Physics, Vol. 61, Issue 20; Other Information: PBD: 15 May 2000; ISSN 1098-0121
- Country of Publication:
- United States
- Language:
- English
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