Persistent Luminescence in Strontium Aluminate: A Roadmap to a Brighter Future
| Autor: | David Van der Heggen, Jonas J. Joos, Ang Feng, Verena Fritz, Teresa Delgado, Nando Gartmann, Bernhard Walfort, Daniel Rytz, Hans Hagemann, Dirk Poelman, Bruno Viana, Philippe F. Smet |
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| Rok vydání: | 2022 |
| Předmět: |
EU-DOPED SRAL2O4
mechanoluminescence SPECTROSCOPIC PROPERTIES DYNAMIC VISUALIZATION MECHANO-LUMINESCENCE Condensed Matter Physics HIGH-FREQUENCY EPR Electronic Optical and Magnetic Materials Biomaterials ELECTRON-PARAMAGNETIC-RESONANCE LONG PHOSPHORESCENCE Physics and Astronomy strontium aluminate Electrochemistry STIMULATED LUMINESCENCE COMBUSTION SYNTHESIS optically stimulated luminescence microscopic models IN-VIVO persistent luminescence thermoluminescence |
| Zdroj: | ADVANCED FUNCTIONAL MATERIALS |
| ISSN: | 1616-3028 1616-301X |
| DOI: | 10.1002/adfm.202208809 |
| Popis: | Glow-in-the-dark materials have been around for a long time. While formerly materials had to be mixed with radioactive elements to achieve a sufficiently long and bright afterglow, these have now been replaced by much safer alternatives. Notably strontium aluminate, SrAl2O4, doped with europium and dysprosium, has been discovered over two decades ago and since then the phosphor has transcended its popular use in watch dials, safety signage, or toys with more niche applications such as stress sensing, photocatalysis, medical imaging, or flicker-free light-emitting diodes. A lot of research efforts are focused on further improving the storage capacity of SrAl2O4:Eu2+,Dy3+, including in nanosized particles, and on finding the underlying physical mechanism to fully explain the afterglow in this material and related compounds. Here an overview of the most important results from the research on SrAl2O4:Eu2+,Dy3+ is presented and different models and the underlying physics are discussed to explain the trapping mechanism at play in these materials. |
| Databáze: | OpenAIRE |
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