Mr. Bruni et al., DEPTH PROFILING OF INAS INP AND INXGA1-XAS/INAS HETEROSTRUCTURES GROWN BY MOLECULAR-BEAM EPITAXY/, Materials science & engineering. B, Solid-state materials for advanced technology, 28(1-3), 1994, pp. 228-231
Highly strained InAs/InP heterostructures and InxGa1-xAs/InAs single q
uantum wells on InP(100) substrates were grown by molecular beam epita
xy. The fabricated heterostructures were investigated by means of the
selected-area X-ray photoelectron spectroscopy (SAXPS) depth profiling
technique. The depth resolution of the SAXPS profiling was found to b
e limited mainly by the photoelectron information depth. It was demons
trated that the ternary compound InAsxPx is formed on the InP substrat
e during its deoxidation under an arsenic flux. The thickness of the I
nAsxP1-x interfacial sublayer was determined and the segregation of in
dium on the sample and substrate surfaces was revealed from the SAXPS
profiles.