Microphotoluminescence of exciton and biexciton around 1.5μm from a single InAs/InP(001) quantum dot
Résumé
We report on the fabrication by low-pressure metalorganic vapor phase epitaxy of InAs∕InP(001) quantum dots (QDs) emitting around 1.5μm, and on the observation of microphotoluminescence (μPL) from a single QD in this wavelength range. The QDs are diamond shaped, with a density of 6.3∙109cm−2. μPL experiments were carried out on a QD sample covered with a gold mask containing apertures (diameter of 200nm). Well defined peaks corresponding to the emission of single QDs were recorded between 1.24 and 1.6μm. The analysis of the pump power dependence of their intensity allows us to discriminate between exciton and biexciton emission lines
| Origine | Fichiers éditeurs autorisés sur une archive ouverte |
|---|