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Title

Synthesis of Mn2+-doped ZnS by a mechanically induced self-sustaining reaction

AuthorsAvilés, Miguel A.; Córdoba, J.M. ; Sayagués, María Jesús .; Gotor, F.J.
KeywordsMechanochemistry
Milling
Combustion process
Semiconductor
Optical properties
Issue Date2020
PublisherKluwer Academic Publishers
CitationJournal of Materials Science 55: 1603- 1613 (2020)
AbstractThe mechanochemical process denoted as a mechanically induced self-sustaining reaction was successfully applied in obtaining Mn-doped ZnS samples with Mn content between 0 and 5 mol%. The process consists in milling Zn/Mn/S powder elemental mixtures with the appropriate stoichiometry, which promotes after approximately 80 min the induction of a combustion reaction. The doping level was properly adjusted by controlling the atomic ratio of the starting mixture. A complete characterization of samples was carried out, including X-ray diffraction, high-resolution transmission electron microscopy, selected area electron diffraction, energy-dispersive X-ray spectroscopy, Raman spectroscopy, diffuse reflectance UV–Vis spectroscopy and emission and excitation photoluminescence measurements. A wurtzite structure, in which Mn replaces Zn, was obtained with a nanometric character. The photoluminescence of samples showed the characteristic Mn T–A emission that was highly dependent on the doping level. The maximum luminescence efficiency through the ZnS excitation was found for a doping value of 1 mol%. The photoluminescence showed virtually no contribution from the host emission, which confirmed that samples were properly doped.
Publisher version (URL)http://dx.doi.org/10.1007/s10853-019-04138-8
URIhttp://hdl.handle.net/10261/213151
DOIhttp://dx.doi.org/10.1007/s10853-019-04138-8
Identifiersdoi: 10.1007/s10853-019-04138-8
issn: 1573-4803
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