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@ARTICLE{Bundaleski:417022,
author = {Bundaleski, N. and Radisavljević, I. and Ivanović, N. and
Rakočević, Z. and Medić Ilić, M. and Romčević, N. and
Teodoro, O. M. N. D.},
title = {{L}ocal, electronic and surface structure of
multi-component {F}e-doped {C}d{T}e({S}) systems},
journal = {Surface science},
volume = {681},
issn = {0039-6028},
address = {Amsterdam},
publisher = {Elsevier},
reportid = {PUBDB-2018-05303},
pages = {76 - 86},
year = {2019},
abstract = {Local structural and electronic properties around Fe in
multi-component Cd$_{0.99}$Fe$_{0.01}$Te$_{0.97}$S$_{0.03}$
system were studied by means of X-ray absorption fine
structure (XAFS). Composition of non-polar (110) surfaces of
Cd$_{0.97}$Fe$_{0.03}$Te and
C$_{0.99}$Fe$_{0.01}$Te$_{0.97}$S$_{0.03}$ systems and
mechanism of their oxidation in ambient conditions were
studied by Atomic Force Microscopy (AFM) and X-ray
Photoelectron Spectroscopy (XPS). It has been found that Fe
preferentially substitutes Cd, but due to much smaller
covalent radius and preferences for paring with S, it causes
local distortion of the host CdTe lattice. The distortion is
confined to the Fe-immediate surrounding and the second and
third coordination shell atoms are (inside experimental
uncertainties) placed at distances expected in CdTe.
Although local structure around Fe is well defined in the
bulk of both samples, their near-surface region is
completely depleted from Fe, and in case of
Cd$_{0.99}$Fe$_{0.01}$Te$_{0.97}$S$_{0.03}$ somewhat
enriched in S. Special attention is, therefore, paid to
characterization of the near-surface region and evaluation
of its composition and structure. To that end we have
introduced a general standard-free algorithm for XPS data
analysis of the two-layer surface structure (bulk, oxide
layer, and the impurity layer). Results of the in-depth
composition analysis revealed that despite different bulk
composition and impurity layer thickness, underneath the
topmost impurity layer lays approximately one monolayer of
CdTeO$_3$ which passivates the surface.},
cin = {DOOR ; HAS-User},
ddc = {530},
cid = {I:(DE-H253)HAS-User-20120731},
pnm = {899 - ohne Topic (POF3-899)},
pid = {G:(DE-HGF)POF3-899},
experiment = {EXP:(DE-H253)D-C-20150101},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000460496100013},
doi = {10.1016/j.susc.2018.11.007},
url = {https://bib-pubdb1.desy.de/record/417022},
}