S. Kaciulis et al., CHARACTERIZATION STUDY OF CDS PASSIVATION LAYERS ON HGXCD1-XTE, Materials science & engineering. B, Solid-state materials for advanced technology, 28(1-3), 1994, pp. 43-46
HgxCd1-xTe epitaxial samples were passivated using an anodic non-aqueo
us sulphidation technique. The chemical composition and thickness of t
he CdS thin films deposited were investigated by selected-area X-ray p
hotoelectron spectroscopy combined with Ar+ ion sputtering. The CdS fi
lms formed on HgxCd1-xTe were found to be nearly stoichiometric; their
thickness varied with the sulphidation temperature and time. The late
ral non-homogeneity of the CdS passivation layers was studied by means
of scanning Auger microscopy. The chemical composition and origin of
the ''holes'' observed in the CdS films deposited were revealed by the
Auger chemical images obtained.