Hesse, S. ; Zimmermann, J. ; Seggern, H. von ; Meng, X. ; Fasel, C. ; Riedel, R. (2009)
Synthesis and functionality of the storage phosphor BaFBr:Eu[sup 2+].
In: Journal of Applied Physics, 105 (6)
doi: 10.1063/1.3086648
Article, Bibliographie
Abstract
The present paper relates to a method for synthesizing the photostimulable storage phosphor BaFBr:Eu2+ that features high stimulation characteristics for use in image plates. All previous synthesis routes consist of a multistep process whereas the presented route is a one-step synthesis. Starting compounds are BaCO3, NH4F, and NH4Br, as well as EuF3 where the ammonium compounds are highly volatile at temperatures below 300 °C. Their reaction products initiate the decomposition of BaCO3 and form BaFBr. The incorporation of F-centers and europium ions occurs at temperature exceeding 550 °C. The individual reaction steps are monitored by simultaneous thermal analysis (thermogravimetry/differential thermal analysis) and the gaseous reaction products are detected by in situ mass spectroscopy. Intermediate and final products are characterized by x-ray diffraction techniques to determine the involved phases. Photoluminescence spectra reveal the typical emission peak of Eu2+ accompanied by a redshifted emission band at 470 nm, which was assigned to oxygen incorporated into the BaFBr lattice. The synthesized powders exhibit small grain sizes well suited for the use in image plates. © 2009 American Institute of Physics.
| Item Type: | Article |
|---|---|
| Erschienen: | 2009 |
| Creators: | Hesse, S. ; Zimmermann, J. ; Seggern, H. von ; Meng, X. ; Fasel, C. ; Riedel, R. |
| Type of entry: | Bibliographie |
| Title: | Synthesis and functionality of the storage phosphor BaFBr:Eu[sup 2+] |
| Language: | English |
| Date: | 2009 |
| Publisher: | AIP |
| Journal or Publication Title: | Journal of Applied Physics |
| Volume of the journal: | 105 |
| Issue Number: | 6 |
| DOI: | 10.1063/1.3086648 |
| Abstract: | The present paper relates to a method for synthesizing the photostimulable storage phosphor BaFBr:Eu2+ that features high stimulation characteristics for use in image plates. All previous synthesis routes consist of a multistep process whereas the presented route is a one-step synthesis. Starting compounds are BaCO3, NH4F, and NH4Br, as well as EuF3 where the ammonium compounds are highly volatile at temperatures below 300 °C. Their reaction products initiate the decomposition of BaCO3 and form BaFBr. The incorporation of F-centers and europium ions occurs at temperature exceeding 550 °C. The individual reaction steps are monitored by simultaneous thermal analysis (thermogravimetry/differential thermal analysis) and the gaseous reaction products are detected by in situ mass spectroscopy. Intermediate and final products are characterized by x-ray diffraction techniques to determine the involved phases. Photoluminescence spectra reveal the typical emission peak of Eu2+ accompanied by a redshifted emission band at 470 nm, which was assigned to oxygen incorporated into the BaFBr lattice. The synthesized powders exhibit small grain sizes well suited for the use in image plates. © 2009 American Institute of Physics. |
| 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 |
| Date Deposited: | 12 Apr 2012 08:48 |
| Last Modified: | 13 Aug 2021 14:08 |
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