We present a detailed theoretical analysis of light-absorption and luminescence of bulk semiconductors at finite electron-hole densities and temperatures. The analysis is carried out within a real-time Green's-function formalism with self-energies evaluated in the self-consistent T-matrix approximation. The theory is applied to a two-band model of GaAs, for which the single-particle self-energies and spectral functions and the absorption and luminescence spectra are calculated. The effects of excitonic correlations on these quantities are highlighted.
|Original language||English (US)|
|Journal||Physical Review B - Condensed Matter and Materials Physics|
|State||Published - Apr 17 2009|
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics