Dynamics of exciton relaxation and excitation transfer to donor-bound excitons in CdTe/CdMnTe quantum wells
- verfasst von
- M. O'Neill, P. Harrison, Michael Oestreich, D. E. Ashenford
- Abstract
Using time-resolved photoluminescence spectroscopy we investigate the dynamics of exciton relaxation in CdTe/Cd1-xMnxTe multiple quantum wells. Unbound excitons are photoexcited and the timescale of formation of the donor-bound excitons varies with excitation intensity from 73 ps to <8 ps and depends on movement of the unbound exciton in the well and the capture process at the donor site. Estimates of the capture cross-section of excitons by neutral donors and of the radiative recombination time of the donor-bound exciton are made. The rate of kinetic energy relaxation of a photocreated exciton from K=0 of the electron-light hole band to K=0 of the electron-heavy hole band is found to be (2.2±0.8)× 108 eV s-1.
- Externe Organisation(en)
-
University of Hull
Max-Planck-Institut für Festkörperforschung
- Typ
- Artikel
- Journal
- Journal of Applied Physics
- Band
- 78
- Seiten
- 451-456
- Anzahl der Seiten
- 6
- ISSN
- 0021-8979
- Publikationsdatum
- 1995
- Publikationsstatus
- Veröffentlicht
- Peer-reviewed
- Ja
- ASJC Scopus Sachgebiete
- Allgemeine Physik und Astronomie
- Elektronische Version(en)
-
https://doi.org/10.1063/1.360732 (Zugang:
Unbekannt)
