Abstract
The frequency of the photoluminescence radiation in modulation-doped quantum wells is theoretically investigated. The vertex correction which describes the effect of the interaction between the annihilating electron-hole pairs is shown to be negligible. Consequently the emission frequency is determined by the fundamental band gap, which requires the calculation of the self-energies of the valence band holes and the conduction band electrons. These calculations are carried out perturbationally using the plasmon-pole approximation for the dielectric function and variationally determined gaussian-type envelope functions. The electron and hole energy levels are also calculated self-consistently by local-density functional theory. The results of both theories agree with each other over a large range of conduction electron densities and explain recent experiments well.
Original language | English |
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Pages (from-to) | 1537-1551 |
Number of pages | 15 |
Journal | Journal of Physics C: Solid State Physics |
Volume | 19 |
Issue number | 10 |
DOIs | |
Publication status | Published - 1986 Apr 10 |
Externally published | Yes |
ASJC Scopus subject areas
- Condensed Matter Physics
- Engineering(all)
- Physics and Astronomy(all)