Trion-electron scattering in GaAs/AlAs quantum wells

A. Manassen, R. Harel, E. Cohen, Arza Ron, E. Linder, L. N. Pfeiffer

Research output: Contribution to journalArticlepeer-review

3 Scopus citations


We report on the photoluminescence (PL) lineshape of negatively charged excitons (trions) in mixed type I-type II GaAs/AlAs quantum wells. A two-dimensional electron gas (2DEG) is photoexcited in the wide wells of this structure and for a low density (ne <1010 cm-2) the spectrum is dominated by a free trion band whose broadening depends on ne. We calculated the elastic and inelastic trion-electron scattering rate for various 2DEG densities and show that this mechanism explains well the observed PL lineshape.

Original languageEnglish (US)
Pages (from-to)443-446
Number of pages4
JournalSurface Science
StatePublished - Jul 20 1996
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry


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