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Naji, M. |
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Motta, Antonella |
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Aletan, Dirar |
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Mohamed, Tarek |
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Ertürk, Emre |
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Taccardi, Nicola |
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Kononenko, Denys |
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Petrov, R. H. | Madrid |
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Alshaaer, Mazen | Brussels |
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Bih, L. |
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Casati, R. |
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Muller, Hermance |
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Kočí, Jan | Prague |
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Šuljagić, Marija |
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Kalteremidou, Kalliopi-Artemi | Brussels |
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Azam, Siraj |
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Ospanova, Alyiya |
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Blanpain, Bart |
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Ali, M. A. |
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Popa, V. |
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Rančić, M. |
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Ollier, Nadège |
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Azevedo, Nuno Monteiro |
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Landes, Michael |
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Rignanese, Gian-Marco |
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Lastusaari, M.
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (22/22 displayed)
- 2024Biophotonic composite scaffolds for controlled nitric oxide release upon NIR excitation
- 2023Glass-based composites comprised of CaWO4:Yb3+, Tm3+ crystals and SrAl2O4:Eu2+, Dy3+ phosphors for green afterglow after NIR chargingcitations
- 2023Glass-based composites comprised of CaWO4:Yb3+, Tm3+ crystals and SrAl2O4:Eu2+, Dy3+ phosphors for green afterglow after NIR chargingcitations
- 2023Glass-based composites comprised of CaWO4:Yb3+, Tm3+ crystals and SrAl2O4:Eu2+, Dy3+ phosphors for green afterglow after NIR chargingcitations
- 2022Near-infrared rechargeable glass-based composites for green persistent luminescencecitations
- 2022Near-infrared rechargeable glass-based composites for green persistent luminescencecitations
- 2022Low temperature afterglow from SrAl2O4 : Eu, Dy, B containing glasscitations
- 2021Micro-luminescence measurement to evidence decomposition of persistent luminescent particles during the preparation of novel persistent luminescent tellurite glassescitations
- 2021Preparation of glass-based composites with green upconversion and persistent luminescence using modified direct doping methodcitations
- 2019Phosphate glasses with blue persistent luminescence prepared using the direct doping methodcitations
- 2019Sintered silica bodies with persistent luminescencecitations
- 2018Persistent luminescent borosilicate glasses using direct particles doping methodcitations
- 2018Influence of the phosphate glass melt on the corrosion of functional particles occurring during the preparation of glass-ceramicscitations
- 2018Processing and Characterization of Bioactive Borosilicate Glasses and Scaffolds with Persistent Luminescencecitations
- 2018Decomposition of persistent luminescent microparticles in corrosive phosphate glass meltcitations
- 2018Persistent luminescent particles containing bioactive glassescitations
- 2017Upconversion in low rare-earth concentrated phosphate glasses using direct NaYF4citations
- 2016Novel oxyfluorophosphate glasses and glass-ceramicscitations
- 2016Effect of the glass melting condition on the processing of phosphate-based glass-ceramics with persistent luminescence propertiescitations
- 2015Processing and characterization of phosphate glasses containing CaAl2O4:Eu2+,Nd3+ and SrAl2O4:Eu2+,Dy3+ microparticlescitations
- 2015New alternative route for the preparation of phosphate glasses with persistent luminescence propertiescitations
- 2011Defect aggregates in the Sr.sub.2./sub.MgSi.sub.2./sub.O.sub.7./sub. persistent luminescence materialcitations
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article
Near-infrared rechargeable glass-based composites for green persistent luminescence
Abstract
<p>The fabrication of Yb<sup>3+</sup>, Tm<sup>3+</sup> co-doped oxyfluorophosphate glass-based composites, with green persistent luminescence after being charged with near-infrared light, is demonstrated. The mechanism responsible for the green afterglow after near-infrared illumination is unveiled. The composite is prepared using a modified melting process to limit the evaporation of fluorine during melting. Intense (blue and ultraviolet) up-conversion emission is obtained by optimizing the Yb<sub>2</sub>O<sub>3</sub> and Tm<sub>2</sub>O<sub>3</sub> concentrations. A heat treatment promotes volume precipitation of Yb<sup>3+</sup>, Tm<sup>3+</sup> co-doped CaF<sub>2</sub> crystals. Although the intensity of the blue up-conversion emission from the Tm<sup>3+</sup> <sup>1</sup>G<sub>4</sub> level is lower in the highly Yb<sup>3+</sup>-concentrated glass-ceramic due to reverse energy transfer from Tm<sup>3+</sup> to Yb<sup>3+</sup>, the heat treatment leads to an increase of the intensity of the emissions around 346 nm, 361 nm nm and 450 nm coming from the Tm<sup>3+</sup> <sup>1</sup>I<sub>6</sub> and <sup>1</sup>D<sub>2</sub> levels. By combining the Yb<sup>3+</sup> and Tm<sup>3+</sup> ions with SrAl<sub>2</sub>O<sub>4</sub>:Eu<sup>2+</sup>,Dy<sup>3+</sup>crystals, green afterglow can be obtained after charging with near-infrared light.</p>