J. Tersoff
Applied Surface Science
Because of their long lifetime in coupled quantum wells under an applied electric field, excitons may he able to reach thermodynamic quasi-equilibrium. Here we measure photoluminescencc and photoluminescence excitation spectra from a symmetric coupled double quantum well. Analysis of the spectra shows that thermodynamic quasi-equilibrium is not achieved at temperatures below 6 K, where the excitons are trapped in a metastahle distribution. At higher temperatures, quasi-equilihrium is achieved. Because of strong repulsion between the excitons, the quasi-equilihrium distribution can he modeled with a Fermi-Dirac distribution. The model quantitatively explains the striking temperature dependence of the photoluminescence lincwidth which has been previously reported. © 1992.
J. Tersoff
Applied Surface Science
Imran Nasim, Melanie Weber
SCML 2024
Andreas C. Cangellaris, Karen M. Coperich, et al.
EMC 2001
Shiyi Chen, Daniel Martínez, et al.
Physics of Fluids