GROWTH OF ULTRA-THIN ALAS LAYERS ON GAAS (001) VICINAL SURFACES - A SEARCH FOR LATERAL CONFINEMENT

Type II double barrier AlxGa1-xAs/AlAs/GaAs quantum wells with ultra-thin AlAs layers (1 or 2 monolayers (ML) wide) have been studied by photoluminescence as a function of the substrate misorientation. A blue shift of the recombination lines is observed when double barrier quantum wells are grown on vicinal surfaces. This is interpreted as an additional lateral confinement induced by the step array on the electron states in the AlAs layers. For structures with 1 ML of AlAs, evidence of the influence of the step array disorder on the ''QWire'' confinement energy is given.


Published in:
Journal of Crystal Growth, 127, 1-4, 831-835
Year:
1993
ISSN:
0022-0248
Keywords:
Laboratories:




 Record created 2010-10-05, last modified 2018-09-13


Rate this document:

Rate this document:
1
2
3
 
(Not yet reviewed)