Structure and luminescence properties of Eu/Tb codoped oxyfluoride glass ceramics containing Sr 2GdF 7 nanocrystals
Eu/Tb codoped transparent oxyfluoride borosilicate glass ceramics containing Sr 2GdF 7 nanocrystals were fabricated under a reductive atmosphere and the conversion of Eu 3+ ions to Eu 2+ ions was observed. T...
| Main Authors: | , , , , , , |
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| Format: | Journal Article |
| Published: |
2011
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| Online Access: | http://hdl.handle.net/20.500.11937/9595 |
| _version_ | 1848745994858004480 |
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| author | Xin, F. Zhao, S. Xu, S. Huang, L. Jia, Guohua Deng, D. Wang, H. |
| author_facet | Xin, F. Zhao, S. Xu, S. Huang, L. Jia, Guohua Deng, D. Wang, H. |
| author_sort | Xin, F. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Eu/Tb codoped transparent oxyfluoride borosilicate glass ceramics containing Sr 2GdF 7 nanocrystals were fabricated under a reductive atmosphere and the conversion of Eu 3+ ions to Eu 2+ ions was observed. The Sr 2GdF 7 nanocrystals with an average size of 32 nm were homogeneously precipitated in the oxyfluoride borosilicate glass matrix, which could be evidenced by X-ray diffraction (XRD), transmission electron microscopy (TEM) and energy-dispersive X-ray (EDX) spectroscopy. The enhancement of photoluminescence emission intensity, reduction of the relative emission intensities between 5D 0 ? 7F 2 and 5D 0 ? 7F 1, and long fluorescence lifetimes of Eu 2+, Eu 3+, and Tb 3+ ions revealed that more rare earth ions were partitioned into the low phonon energy environment Sr 2GdF 7 nanocrystals. Under ultraviolet excitation, pure and bright white light emission was obtained in the oxyfluoride borosilicate glass ceramic, which may be a potential blue, green and red-emitting phosphor for white LEDs. © 2011 Elsevier B.V. All rights reserved. |
| first_indexed | 2025-11-14T06:26:12Z |
| format | Journal Article |
| id | curtin-20.500.11937-9595 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T06:26:12Z |
| publishDate | 2011 |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-95952017-09-13T14:51:29Z Structure and luminescence properties of Eu/Tb codoped oxyfluoride glass ceramics containing Sr 2GdF 7 nanocrystals Xin, F. Zhao, S. Xu, S. Huang, L. Jia, Guohua Deng, D. Wang, H. Eu/Tb codoped transparent oxyfluoride borosilicate glass ceramics containing Sr 2GdF 7 nanocrystals were fabricated under a reductive atmosphere and the conversion of Eu 3+ ions to Eu 2+ ions was observed. The Sr 2GdF 7 nanocrystals with an average size of 32 nm were homogeneously precipitated in the oxyfluoride borosilicate glass matrix, which could be evidenced by X-ray diffraction (XRD), transmission electron microscopy (TEM) and energy-dispersive X-ray (EDX) spectroscopy. The enhancement of photoluminescence emission intensity, reduction of the relative emission intensities between 5D 0 ? 7F 2 and 5D 0 ? 7F 1, and long fluorescence lifetimes of Eu 2+, Eu 3+, and Tb 3+ ions revealed that more rare earth ions were partitioned into the low phonon energy environment Sr 2GdF 7 nanocrystals. Under ultraviolet excitation, pure and bright white light emission was obtained in the oxyfluoride borosilicate glass ceramic, which may be a potential blue, green and red-emitting phosphor for white LEDs. © 2011 Elsevier B.V. All rights reserved. 2011 Journal Article http://hdl.handle.net/20.500.11937/9595 10.1016/j.optmat.2011.07.013 restricted |
| spellingShingle | Xin, F. Zhao, S. Xu, S. Huang, L. Jia, Guohua Deng, D. Wang, H. Structure and luminescence properties of Eu/Tb codoped oxyfluoride glass ceramics containing Sr 2GdF 7 nanocrystals |
| title | Structure and luminescence properties of Eu/Tb codoped oxyfluoride glass ceramics containing Sr 2GdF 7 nanocrystals |
| title_full | Structure and luminescence properties of Eu/Tb codoped oxyfluoride glass ceramics containing Sr 2GdF 7 nanocrystals |
| title_fullStr | Structure and luminescence properties of Eu/Tb codoped oxyfluoride glass ceramics containing Sr 2GdF 7 nanocrystals |
| title_full_unstemmed | Structure and luminescence properties of Eu/Tb codoped oxyfluoride glass ceramics containing Sr 2GdF 7 nanocrystals |
| title_short | Structure and luminescence properties of Eu/Tb codoped oxyfluoride glass ceramics containing Sr 2GdF 7 nanocrystals |
| title_sort | structure and luminescence properties of eu/tb codoped oxyfluoride glass ceramics containing sr 2gdf 7 nanocrystals |
| url | http://hdl.handle.net/20.500.11937/9595 |