Self-consistent T-matrix theory of semiconductor light-absorption and luminescence

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Abstract

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 languageEnglish (US)
Article number155205
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume79
Issue number15
DOIs
StatePublished - Apr 17 2009

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matrix theory
electromagnetic absorption
Light absorption
Luminescence
luminescence
Semiconductor materials
time functions
Green's function
Green's functions
formalism
absorption spectra
energy
Electrons
approximation
Temperature
temperature
gallium arsenide

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials

Cite this

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AB - 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.

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