Preparation and photoluminescence of Eu-doped oxyfluoride borosilicate glass ceramics
Eu-doped transparent oxyfluoride borosilicate glass ceramics containing Ba2GdF7 nanocrystals were prepared by controlling crystallization of melt-quenched glass fabricated under a reductive atmosphere. In the oxyfluoride borosilicate glass ceramics, the mean crystal size of Ba2GdF7 nanocrystals was...
| Main Authors: | , , , , , , |
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| Format: | Journal Article |
| Published: |
Elsevier
2012
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| Online Access: | http://hdl.handle.net/20.500.11937/45760 |
| _version_ | 1848757374653825024 |
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| author | XIN, F. ZHAO, S. XU, S. Jia, Guohua DENG, D. WANG, H. HUANG, L. |
| author_facet | XIN, F. ZHAO, S. XU, S. Jia, Guohua DENG, D. WANG, H. HUANG, L. |
| author_sort | XIN, F. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Eu-doped transparent oxyfluoride borosilicate glass ceramics containing Ba2GdF7 nanocrystals were prepared by controlling crystallization of melt-quenched glass fabricated under a reductive atmosphere. In the oxyfluoride borosilicate glass ceramics, the mean crystal size of Ba2GdF7 nanocrystals was about 30 nm, which could be observed by X-ray diffraction (XRD) and transmission electron microscopy analysis. The photoluminescence spectra of the samples excited at 392 nm showed that, besides the characteristic sharp emissions of Eu3+ ions, a very intense broadband emission of Eu2+ ions centered at 450 nm appeared. The photoluminescence intensity of Eu3+ and Eu2+ ions in the glass ceramics was much stronger than that in the as-made precursor. The long decay lifetimes of Eu3+ and Eu2+ ions evidenced the partitions of Eu3+ and Eu2+ ions into the Ba2GdF7 nanocrystals. The energy transfer from Gd3+ ions to Eu3+ and Eu2+ ions was confirmed by the excitation and emission spectra. |
| first_indexed | 2025-11-14T09:27:05Z |
| format | Journal Article |
| id | curtin-20.500.11937-45760 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T09:27:05Z |
| publishDate | 2012 |
| publisher | Elsevier |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-457602017-09-13T14:26:49Z Preparation and photoluminescence of Eu-doped oxyfluoride borosilicate glass ceramics XIN, F. ZHAO, S. XU, S. Jia, Guohua DENG, D. WANG, H. HUANG, L. Eu-doped transparent oxyfluoride borosilicate glass ceramics containing Ba2GdF7 nanocrystals were prepared by controlling crystallization of melt-quenched glass fabricated under a reductive atmosphere. In the oxyfluoride borosilicate glass ceramics, the mean crystal size of Ba2GdF7 nanocrystals was about 30 nm, which could be observed by X-ray diffraction (XRD) and transmission electron microscopy analysis. The photoluminescence spectra of the samples excited at 392 nm showed that, besides the characteristic sharp emissions of Eu3+ ions, a very intense broadband emission of Eu2+ ions centered at 450 nm appeared. The photoluminescence intensity of Eu3+ and Eu2+ ions in the glass ceramics was much stronger than that in the as-made precursor. The long decay lifetimes of Eu3+ and Eu2+ ions evidenced the partitions of Eu3+ and Eu2+ ions into the Ba2GdF7 nanocrystals. The energy transfer from Gd3+ ions to Eu3+ and Eu2+ ions was confirmed by the excitation and emission spectra. 2012 Journal Article http://hdl.handle.net/20.500.11937/45760 10.1016/S1002-0721(10)60628-X Elsevier restricted |
| spellingShingle | XIN, F. ZHAO, S. XU, S. Jia, Guohua DENG, D. WANG, H. HUANG, L. Preparation and photoluminescence of Eu-doped oxyfluoride borosilicate glass ceramics |
| title | Preparation and photoluminescence of Eu-doped oxyfluoride borosilicate glass ceramics |
| title_full | Preparation and photoluminescence of Eu-doped oxyfluoride borosilicate glass ceramics |
| title_fullStr | Preparation and photoluminescence of Eu-doped oxyfluoride borosilicate glass ceramics |
| title_full_unstemmed | Preparation and photoluminescence of Eu-doped oxyfluoride borosilicate glass ceramics |
| title_short | Preparation and photoluminescence of Eu-doped oxyfluoride borosilicate glass ceramics |
| title_sort | preparation and photoluminescence of eu-doped oxyfluoride borosilicate glass ceramics |
| url | http://hdl.handle.net/20.500.11937/45760 |