Epitaxial growth and interface structure of PbS on InP(110)

We have investigated layer growth mode, interface chemistry and morphology of PbS layers on InP(110) using XPS and LEED. AL room temperature, the inte rface has been observed to be abrupt and non-reactive. The growth mode is l ayer-like but proceeds in a multilayer fashion. Epitaxial PbS layers have b een grown with the (001) face parallel to InP(110) and good lattice match a long the [1 (1) over bar 0] orientation of the substrate surface. Along the [001] surface direction, an incommensurate. lattice match has been observe d. Upon heating of the substrate during PbS deposition 3D island growth occ urs beyond an initial multilayer stage of growth. (C) 1999 Elsevier Science B.V. All rights reserved.