Abstract
Electron relaxation in a GaAs quantum dot is investigated to second order in electron-phonon interactions. Calculation of relaxation rate, as a function of level separation, indicates the significant contribution of LO±LA processes, which create a window of rapid (subnanosecond) relaxation around the longitudinal-optical phonon energy. This result may provide a possible solution to the problem of photoluminescence degradation in small quantum dots.
- Received 26 May 1992
DOI:https://doi.org/10.1103/PhysRevB.46.7260
©1992 American Physical Society