Hesse, S. ; Zimmermann, J. ; Seggern, H. von ; Ehrenberg, H. ; Fuess, H. ; Fasel, C. ; Riedel, R. (2006)
CsEuBr3: Crystal structure and its role in the photostimulation of CsBr:Eu2+.
In: Journal of Applied Physics, 100 (8)
doi: 10.1063/1.2358328
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
CsBr:Eu2+ has recently been investigated as a photostimulable x-ray storage phosphor with great potential for application in high-resolution image plates. In a recent paper Hackenschmied et al. [J. Appl. Phys. 93, 5109 (2003)] suggested that segregations of CsEuBr3 or Cs4EuBr6 formed within CsBr:Eu2+ during annealing are responsible for an increase in the photostimulated luminescence (PSL) yield. In this work single crystals of CsEuBr3 were prepared by a one step synthesis and identified by x-ray diffraction (XRD) analysis as single phase perovskites. It was concluded that, after preparation, CsEuBr3 degrades in normal atmosphere into at least two phases, one of which is the orthorhombic structure of Cs2EuBr5∙10H2O. The XRD powder diffraction pattern of this compound is very similar to that of the segregations observed within CsBr:Eu2+ and reported by Hackenschmied et al. However, the increased PSL yield in CsBr:Eu2+ after annealing cannot be due to the segregations, because the trivalent nature of the europium in the segregations renders them PSL inactive.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2006 |
| Autor(en): | Hesse, S. ; Zimmermann, J. ; Seggern, H. von ; Ehrenberg, H. ; Fuess, H. ; Fasel, C. ; Riedel, R. |
| Art des Eintrags: | Bibliographie |
| Titel: | CsEuBr3: Crystal structure and its role in the photostimulation of CsBr:Eu2+ |
| Sprache: | Englisch |
| Publikationsjahr: | 15 Oktober 2006 |
| Verlag: | AIP Publishing |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Journal of Applied Physics |
| Jahrgang/Volume einer Zeitschrift: | 100 |
| (Heft-)Nummer: | 8 |
| DOI: | 10.1063/1.2358328 |
| URL / URN: | https://doi.org/10.1063/1.2358328 |
| Kurzbeschreibung (Abstract): | CsBr:Eu2+ has recently been investigated as a photostimulable x-ray storage phosphor with great potential for application in high-resolution image plates. In a recent paper Hackenschmied et al. [J. Appl. Phys. 93, 5109 (2003)] suggested that segregations of CsEuBr3 or Cs4EuBr6 formed within CsBr:Eu2+ during annealing are responsible for an increase in the photostimulated luminescence (PSL) yield. In this work single crystals of CsEuBr3 were prepared by a one step synthesis and identified by x-ray diffraction (XRD) analysis as single phase perovskites. It was concluded that, after preparation, CsEuBr3 degrades in normal atmosphere into at least two phases, one of which is the orthorhombic structure of Cs2EuBr5∙10H2O. The XRD powder diffraction pattern of this compound is very similar to that of the segregations observed within CsBr:Eu2+ and reported by Hackenschmied et al. However, the increased PSL yield in CsBr:Eu2+ after annealing cannot be due to the segregations, because the trivalent nature of the europium in the segregations renders them PSL inactive. |
| Freie Schlagworte: | Crystallography, Phosphorescence, Sintering, X-ray diffraction, Chemical compounds and components, Powder diffraction, Chemical elements, Optical materials, Photostimulation, Perovskites |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Disperse Feststoffe 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Elektronische Materialeigenschaften 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Nichtmetallisch-Anorganische Werkstoffe 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Strukturforschung |
| Hinterlegungsdatum: | 17 Dez 2018 12:41 |
| Letzte Änderung: | 13 Aug 2021 14:08 |
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