1.
Phys Rev Lett
; 84(16): 3666-9, 2000 Apr 17.
Artículo
en Inglés
| MEDLINE
| ID: mdl-11019172
RESUMEN
The emission of light in the blue-green region from cubic InxGa1-xN alloys grown by molecular beam epitaxy is observed at room temperature and 30 K. By using selective resonant Raman spectroscopy (RRS) we demonstrate that the emission is due to quantum confinement effects taking place in phase-separated In-rich quantum dots formed in the layers. RRS data show that the In content of the dots fluctuates across the volume of the layers. We find that dot size and alloy fluctuation determine the emission wavelengths.