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http://bura.brunel.ac.uk/handle/2438/17932| Title: | Crystal structure, photoluminescence and cathodoluminescence of Sr1-xCaxAl2O4 doped with Eu2+ |
| Authors: | Yu, L den Engelsen, D Gorobez, J Fern, GR Ireland, TG Frampton, C Silver, J |
| Issue Date: | 11-Apr-2019 |
| Publisher: | Optical Society of America |
| Citation: | Yu, L., den Engelsen, D., Gorobez, J., Fern, G.R., Ireland, T.G., Frampton, C. and Silver, J. (2019) 'Crystal structure, photoluminescence and cathodoluminescence of Sr1-xCaxAl2O4 doped with Eu2+', Optical Materials Express, 9 (5), pp. 2175 - 2195 (21). doi: 10.1364/OME.9.002175. |
| Abstract: | Copyright © 2019 The Author(s). The crystal structure, photoluminescence and some cathodoluminescent spectra of Sr0.99−xCaxEu0.01Al2O4 (Eu2+) are described. Five different phases have been found: three different monoclinic phases, one hexagonal and one cubic phase. Based on the cathodoluminescence of SrAl2O4:Eu2+ at low temperature and photoluminescence of Sr1−xCaxAl2O4:Eu2+ at 0 ≤ x ≤ 0.1, we consider an alternative explanation for the origin of the 440 nm peak in the low temperature spectrum of SrAl2O4:Eu2+ , namely that it can be attributed to the emission from Eu2+ ions situated on the alkaline earth sites of the monoclinic P21/n structure that generate the 440 nm emission of CaAl2O4. However, this alternative hypothesis has been eliminated by XRD analyses of SrAl2O4 at low temperature. |
| URI: | https://bura.brunel.ac.uk/handle/2438/17932 |
| DOI: | https://doi.org/10.1364/OME.9.002175 |
| Other Identifiers: | ORCID iD: Terry G. Ireland https://orcid.org/0000-0001-6512-9540 |
| Appears in Collections: | Dept of Mechanical and Aerospace Engineering Research Papers |
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|---|---|---|---|---|
| FullText.pdf | 2.27 MB | Adobe PDF | View/Open |
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