Size-dependent radiative decay of excitons in CuCl semiconducting quantum spheres embedded in glasses
Abstract
We report the radiative-decay behavior of Wannier excitons confined in CuCl semiconducting microcrystallites with radii R of 18-77 Å in glasses. We have observed that the radiative-decay rate is proportional to R2.1. This confirms the theoretical prediction for the size dependence of the radiative-decay rate of ``zero-dimensional excitons'' in quantum spheres. This decay of the exciton is a super-radiant decay in the sense that a coherent polarization is involved.
- Publication:
-
Physical Review B
- Pub Date:
- October 1989
- DOI:
- 10.1103/PhysRevB.40.8585
- Bibcode:
- 1989PhRvB..40.8585N
- Keywords:
-
- 71.35.+z;
- 78.47.+p;
- 78.55.-m;
- Time-resolved optical spectroscopies and other ultrafast optical measurements in condensed matter;
- Photoluminescence properties and materials