E. Bedel et al., IMPROVED METHOD FOR GAAS-(GA,AL)AS EPITAXIAL REGROWTH, Materials science & engineering. B, Solid-state materials for advanced technology, 21(2-3), 1993, pp. 157-160
UV-ozone oxidation of GaAs epitaxial layers was evaluated for GaAs mol
ecular beam epitaxy regrowth. Auger electron spectroscopy was used to
determine the conditions leading to a contaminant-free surface before
epitaxy; oxide uniformity, surface roughness and crystalline defects w
ere also studied using transmission electron microscopy. Finally, the
capability of this technique was demonstrated by growing a GaAlAs-GaAs
-GaAlAs quantum well on a processed GaAs epitaxial layer.