Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9793084 | Computational Materials Science | 2005 | 6 Pages |
Abstract
We present a kinetic Monte Carlo model describing the growth of AlxGa1âxAs heterostructure and including a local photoemission model with reflection high-energy electron diffraction (RHEED) intensity for comparison. The model assumes growth under As rich conditions typical for molecular beam epitaxy (MBE). We have examined the AlxGa1âxAs morphology with 0 ⩽ x ⩽ 1 and the growth of normal and inverted interface of AlAs-GaAs system. We show, as has been observed experimentally [J. Electrochem. Soc. 129 (1982) 824; J. Vac. Sci. Technol. B 4 (2) (1986) 590], a roughness AlxGa1âxAs front profile for high Al concentrations and a difference in the quality of the two AlAs-GaAs interfaces due to a lower diffusivity of Al atoms compared to Ga atoms.
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Authors
N. Fazouan, E. Atmani, M. Djafari-Rouhani, A. Estève,