In this contribution the authors studied the optical properties of cubic AlxGa1-xN/GaN single and multiple quantum wells. The well widths ranged from 2.5 to 7.5 nm. Samples were grown by rf-plasma assisted molecular beam epitaxy on free standing 3C-SiC (001) substrates. During growth of Al0.15Ga0.85N/GaN quantum wells clear reflection high energy electron diffraction oscillations were observed indicating a two dimensional growth mode. They observe strong room temperature, ultraviolet photoluminescence at about 3.3 eV with a minimum linewidth of 90 meV. The peak energy of the emission versus well width is reproduced by a square-well Poisson-Schrödinger model calculation.
Published in:
Applied Physics Letters
(Volume:89
,
Issue:
13
)
Date of Publication:
Sep 2006
- Page(s):
-
131910
-
131910-3
- ISSN :
-
0003-6951
- Digital Object Identifier :
-
10.1063/1.2357587
- Product Type:
-
Journals & Magazines
- Date of Current Version :
-
18 June 2009
- Issue Date :
-
Sep 2006