The negatively charged quasi-two-dimensional exciton (Formula presented) is studied numerically in the presence of a uniform perpendicular (Formula presented) field and various in-plane confinements. The corresponding photoluminescence (PL) spectra, including shakeup processes, are calculated. These calculations provide a quantitative explanation of recent experimental PL spectra. The photoluminescence signatures of charged excitons in quantum dots are also examined. Electron-hole pair distribution functions are calculated that show the structure of the charged exciton states (both ground and excited states). Increasing excitation reflects a competition between two effects: partial ionization of either one or two electrons.
|Original language||English (US)|
|Number of pages||12|
|Journal||Physical Review B - Condensed Matter and Materials Physics|
|State||Published - Jan 1 1998|
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics