Molecular Beam Epitaxial Growth of Bulk AlAs0.16Sb0.84 and AlAs0.16Sb0.84/InAs Superlattices on Lattice-Matched InAs Substrates

Abstract
AlAs0.16Sb0.84 ternaries and AlAs0.16Sb0.84/InAs superlattices have been grown by molecular beam epitaxy lattice-matched on InAs substrates. The compositional dependence of AlAs y Sb1- y on the ratio of Sb4 to As2 fluxes as well as on the substrate temperature has been investigated and can be explained qualitatively. The growth of AlAs0.16Sb0.84/InAs superlattices is described and illustrated by the results of reflection high-energy electron diffraction measurements. The crystalline quality of the superlattices is demonstrated by means of transmission electron microscopy and X-ray diffraction measurements.