Abstract
For the calculation of the ground-state energy in thin cylindrical quantum dots with an arbitrary radial potential, a theoretical approach has been developed. The results of the calculations are compared to the experimental observations of the photoluminescence energy of GaAs/As quantum dots realized by the implantation-induced intermixing technique. For these structures an error-function-like radial potential is assumed and its steepness was estimated from the comparison with the calculations. It is concluded that the observed diameter-dependent luminescence blueshift is caused by the confinement in the radial potential, rather than by intermixing in the center of the quantum dots.
- Received 1 June 1993
DOI:https://doi.org/10.1103/PhysRevB.49.8109
©1994 American Physical Society