Abstract
A phonon bottleneck is manifested for correlated electron/hole (exciton) states in self-organized quantum dots (QD’s) with a flat, truncated shape. Suppressed relaxation and hot luminescence from excited states in the low-density regime are demonstrated. The long low-temperature relaxation time of being times the radiative lifetime, is attributed to a quenched polar exciton-LO-phonon coupling in truncated QD’s based on eight-band model calculations.
- Received 19 September 2001
DOI:https://doi.org/10.1103/PhysRevB.64.241305
©2001 American Physical Society