Influence of Ln2S3 (Ln – Gd, Dy) dopant
on the crystal structure and optical properties of zinc sulfide
Chem.
Met. Alloys 3
(2010) 75-82
https://doi.org/10.30970/cma3.0120
V.F. ZINCHENKO, N.O. CHIVIREVA, G.I. KOCHERBA, V.Ya. MARKIV, N.M. BELYAVINA
Data on the influence of the alloying dopants gadolinium or dysprosium sulfide on the crystal
structure of ZnS prepared by self-propagating
high-temperature synthesis (SHS) are presented. The dopants contribute to the removal of ZnO
impurity from zinc sulfide by a reaction of double exchange resulting in the
appearance of lanthanide oxysulfide, Ln2O2S.
High-temperature annealing in deep vacuum produces significant changes in the
crystal structure. Products of the reduction of Ln(²²²) were reveled by the presence
of intense absorption bands in the UV range of the spectrum. Thin-film coatings
on glass substrates have the character of a composite consisting of amorphous
components and nanoparticles of the cubic
modification of ZnS.
Crystal structure of the polymorphic
modifications ZnS–4H (a) and ZnS–2H
(b) of zinc sulfide.
Keywords
Zinc sulfide / Crystal structure / Dopant / Exchange reaction