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
Article, Bibliographie
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.
| Item Type: | Article |
|---|---|
| Erschienen: | 2006 |
| Creators: | Hesse, S. ; Zimmermann, J. ; Seggern, H. von ; Ehrenberg, H. ; Fuess, H. ; Fasel, C. ; Riedel, R. |
| Type of entry: | Bibliographie |
| Title: | CsEuBr3: Crystal structure and its role in the photostimulation of CsBr:Eu2+ |
| Language: | English |
| Date: | 15 October 2006 |
| Publisher: | AIP Publishing |
| Journal or Publication Title: | Journal of Applied Physics |
| Volume of the journal: | 100 |
| Issue Number: | 8 |
| DOI: | 10.1063/1.2358328 |
| URL / URN: | https://doi.org/10.1063/1.2358328 |
| 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. |
| Uncontrolled Keywords: | Crystallography, Phosphorescence, Sintering, X-ray diffraction, Chemical compounds and components, Powder diffraction, Chemical elements, Optical materials, Photostimulation, Perovskites |
| Divisions: | 11 Department of Materials and Earth Sciences 11 Department of Materials and Earth Sciences > Material Science 11 Department of Materials and Earth Sciences > Material Science > Dispersive Solids 11 Department of Materials and Earth Sciences > Material Science > Electronic Materials 11 Department of Materials and Earth Sciences > Material Science > Nonmetallic-Inorganic Materials 11 Department of Materials and Earth Sciences > Material Science > Structure Research |
| Date Deposited: | 17 Dec 2018 12:41 |
| Last Modified: | 13 Aug 2021 14:08 |
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