Artículo
Synthesis of Mn2+-doped ZnS by a mechanically induced self-sustaining reaction
Autor/es | Avilés Escaño, Miguel Ángel
Córdoba Gallego, José Manuel Sayagués de Vega, María Jesús Gotor Martínez, Francisco José |
Departamento | Universidad de Sevilla. Departamento de Química Inorgánica |
Fecha de publicación | 2020 |
Fecha de depósito | 2023-01-30 |
Publicado en |
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Resumen | The 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 ... The 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 Mn2+ replaces Zn2+, was obtained with a nanometric character. The photoluminescence of samples showed the characteristic Mn2+ 4T1–6A1 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. |
Agencias financiadoras | European Commission (EC) |
Identificador del proyecto | RYC-2013-12437 |
Cita | Avilés Escaño, M.Á., Córdoba Gallego, J.M., Sayagués de Vega, M.J. y Gotor Martínez, F.J. (2020). Synthesis of Mn2+-doped ZnS by a mechanically induced self-sustaining reaction. Journal of Materials Science, 55 (4), 1603-1613. https://doi.org/10.1007/s10853-019-04138-8. |
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Synthesis of Mn.pdf | 980.5Kb | [PDF] | Ver/ | |