| People | Locations | Statistics |
|---|---|---|
| Naji, M. |
| |
| Motta, Antonella |
| |
| Aletan, Dirar |
| |
| Mohamed, Tarek |
| |
| Ertürk, Emre |
| |
| Taccardi, Nicola |
| |
| Kononenko, Denys |
| |
| Petrov, R. H. | Madrid |
|
| Alshaaer, Mazen | Brussels |
|
| Bih, L. |
| |
| Casati, R. |
| |
| Muller, Hermance |
| |
| Kočí, Jan | Prague |
|
| Šuljagić, Marija |
| |
| Kalteremidou, Kalliopi-Artemi | Brussels |
|
| Azam, Siraj |
| |
| Ospanova, Alyiya |
| |
| Blanpain, Bart |
| |
| Ali, M. A. |
| |
| Popa, V. |
| |
| Rančić, M. |
| |
| Ollier, Nadège |
| |
| Azevedo, Nuno Monteiro |
| |
| Landes, Michael |
| |
| Rignanese, Gian-Marco |
|
Smet, Philippe
Ghent University
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (16/16 displayed)
- 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
- 2022An in situ photoluminescence study of atomic layer deposition on polymer embedded InP-based quantum dots
- 2021Young's modulus of thin SmS films measured by nanoindentation and laser acoustic wavecitations
- 2021A full thermal model for acoustically induced (thermo)luminescence
- 2021Atomic layer deposition on polymer thin films : on the role of precursor infiltration and reactivitycitations
- 2019SmS/EuS/SmS tri-layer thin films : the role of diffusion in the pressure triggered semiconductor-metal transitioncitations
- 2016Seeing (ultra)sound in real-time through the Acousto-PiezoLuminescent lens
- 2015Lanthanide-assisted deposition of strongly electro-optic PZT thin films on silicon: toward integrated active nanophotonic devicescitations
- 2013Preferentially oriented BaTiO3 thin films deposited on silicon with thin intermediate buffer layerscitations
- 2013Cs7Nd11(SeO3)(12)Cl-16: first noncentrosymmetric structure among alkaline-metal lanthanide selenite halidescitations
- 2013Combining optical and electrical studies to unravel the effect of Sb doping on CIGS solar cell
- 2012The configuration of rare earth centers in nitridosilicates: an x-ray absorption and optical investigation
- 2008Cathodoluminescence mapping with an energy-dispersive x-ray detector: principle, simulation and application
- 2008Synthesis and photoluminescence characteristics of Al2O3 thin films doped with (Ca,Sr)S:Eu2+
- 2008Cathodoluminescence mapping with an EDX detector: principle, simulation and application
Places of action
| Organizations | Location | People |
|---|
document
Synthesis and photoluminescence characteristics of Al2O3 thin films doped with (Ca,Sr)S:Eu2+
Abstract
Al2O3 condensed solutions were synthesized by a nonaqueous sol-gel process using aluminium isopropoxide as precursor, anhydrous ethanol as solvent, nitric acid as catalyst, and acetylacetone as chelating agent [1]. Orange to red-emitting (Ca,Sr)S:Eu2+ particles were prepared by a solvothermal route which yields monodisperse, single crystalline particles with typical size between 0.5 and 2µm [2]. For practical use, the stability of these sulfides in the presence of moist air is limited. Hence a coating of the particles and/or an incorporation in an inert thin film is preferred. Although a sol-gel process is an attractive route for this purpose, a non-aqueous synthesis method is required. Regarding the choice of this matrix material, it should be thermally and chemically stable, and also be transparent to the excitation and emission light of the incorporated particles.(Ca,Sr)S:Eu2+ particles suspended in ethanol were mixed into a viscous Al2O3 gel. It was observed that the (Ca,Sr)S:Eu2+ particles were reasonably stable in the gel. A silicon substrate was then coated with this mixture using spin coating followed by calcination at 500oC in air. The luminescence and structural properties of these (Ca,Sr)S:Eu2+ doped Al2O3 thin films were investigated. For the case of SrS:Eu2+ doped Al2O3 thin films, a broad emission band at 616nm was observed in photoluminescence, which is the same as the emission band ofbulk SrS:Eu2+ [2].The morphology of the particles and the distribution in the Al2O3 matrix was studied with scanning electron microscopy. Elemental mappings (using EDX) were correlated with spectrally resolved cathodoluminescence mappings. Degradation of sulfide particles could be monitored by the presence of a violet emission band, typical for Eu2+-doped sulfates. Finally the stability against hydrolysis of the (Ca,Sr)S:Eu2+-doped Al2O3 thin films was evaluated.