Luminescence behavior of Er{sup 3+} doped glass ceramics containing Sr{sub 2}RF{sub 7} (R=Y,Gd,La) nanocrystals
- Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027 (China)
- UMR-CNRS 6512 'Verres et Ceramiques', Institut de Chimie de Rennes, Universite de Rennes 1, Campus de Beaulieu, 35042 Rennes Cedex (France)
The luminescence behaviors of Er{sup 3+} doped glass ceramics containing Sr{sub 2}RF{sub 7} (R=Y,Gd,La) nanocrystals were investigated. The formation of Sr{sub 2}RF{sub 7} nanocrystals in the glass ceramics was confirmed by x-ray diffraction and high resolution transmission electron microscopy. Energy dispersive x-ray spectroscopy analysis showed that the Er{sup 3+} ions were efficiently incorporated in Sr{sub 2}GdF{sub 7} nanocrystals. The efficient upconversion luminescence of the Er{sup 3+} in the glass ceramics can be observed. The lifetime of the Er{sup 3+} in the glass ceramics was found to be much longer than that in the glass due to the lower phonon energy of fluoride crystals when Er{sup 3+} entered efficiently fluoride crystals in the glass ceramics.
- OSTI ID:
- 21137446
- Journal Information:
- Journal of Applied Physics, Vol. 104, Issue 4; Other Information: DOI: 10.1063/1.2969039; (c) 2008 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-8979
- Country of Publication:
- United States
- Language:
- English
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