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Título: | Mn2+-doped MgGeO3 nanophosphors with controlled shape and optimized persistent luminescence |
Autor: | González-Mancebo, Daniel; Arroyo, Encarnación; Becerro, Ana Isabel CSIC ORCID; Ocaña, Manuel CSIC ORCID | Palabras clave: | Manganese MgGeO 3 Nanophosphor Persistent luminescence Salt-assisted |
Fecha de publicación: | 15-nov-2023 | Editor: | Elsevier | Citación: | Ceramics International 49(22): 36791-36799 (2023) | Resumen: | Mn2+-doped MgGeO3 (MgGeO3:Mn2+) is an efficient persistent phosphor that emits red luminescence for long time after stopping excitation with UV light. For optical and biotechnological uses a precise control of particle size and shape is highly desired since these parameters may have a strong influence on the properties and suitability of phosphor materials for the intended applications. To the best of our knowledge, MgGeO3:Mn2+ has been synthesized by conventional solid-state-reaction, which yields particles of heterogeneous size and shape. Here, we report for the first time in the literature a salt-assisted method for the synthesis of MgGeO3:Mn2+ nanoparticles with uniform shape (nanorods) and a mean size of 350 nm × 99 nm. The rigorous study of the luminescence properties of the MgGeO3:Mn2+ nanorods revealed that whereas the optimum doping level for photoluminescence was 2.0 mol% Mn2+, the best persistent luminescence was attained with just 0.5 mol% Mn2+, which is ascribed to the different mechanisms of both luminescence processes. The optimum persistent nanophosphor showed an intense red emission, which persisted at least 17 h after stopping the excitation. Such excellent properties make the developed nanophosphor an attractive candidate for use in optical and biotechnological applications. | Versión del editor: | https://doi.org/10.1016/j.ceramint.2023.09.008 | URI: | http://hdl.handle.net/10261/349194 | DOI: | 10.1016/j.ceramint.2023.09.008 | ISSN: | 0272-8842 | E-ISSN: | 1873-3956 |
Aparece en las colecciones: | (ICMS) Artículos |
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