Abstract
We report on an investigation of the electron-hole (e-h) plasma decay time versus e-h pair density in semiconductor quantum wells. We determine the density reached in a steady-state photoluminescence experiment from the optical spectra and compare it with the e-h pair generation rate. We find that in our samples only radiative e-h recombination is important, and that nonradiative processes and plasma expansion have negligible effects on . At plasma densities larger than 5× , we observe a strong nonlinear reduction of the e-h capture rate into the quantum wells.
- Received 18 June 1992
DOI:https://doi.org/10.1103/PhysRevB.46.9861
©1992 American Physical Society