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Proceedings Paper

Fabrication of long lasting phosphorescence glass spheres
Author(s): Hao Lv; Aimei Liu; Jufang Tong; Xunong Yi; Qianguang Li
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Paper Abstract

The long lasting phosphorescence glass spheres doped with Eu2O3 and Dy2O3 were prepared under the reducing atmosphere and characterized. XRD analysis indicated the glass spheres exhibited the typical diffraction peaks of SrAl2O4: Eu2+, Dy3+. The emission spectra of the glass spheres showed broad bands peaking at 510nm. The excitation spectra of the glass spheres showed broad bands ranging from 300 to 480nm. These are believed due to the 5d4f→4f transitions of Eu2+ in the SrAl2O4: Eu2+, Dy3+ phosphors. The afterglow luminescence of the glass spheres excited by a 40W fluorescence lamp for 30min can be observed in the dark for about 15h with the naked eye.

Paper Details

Date Published: 9 February 2009
PDF: 8 pages
Proc. SPIE 7158, 2008 International Conference on Optical Instruments and Technology: Microelectronic and Optoelectronic Devices and Integration, 715810 (9 February 2009); doi: 10.1117/12.805319
Show Author Affiliations
Hao Lv, Xiaogan Univ. (China)
Aimei Liu, Xiaogan Univ. (China)
Jufang Tong, Xiaogan Univ. (China)
Xunong Yi, Xiaogan Univ. (China)
Qianguang Li, Xiaogan Univ. (China)


Published in SPIE Proceedings Vol. 7158:
2008 International Conference on Optical Instruments and Technology: Microelectronic and Optoelectronic Devices and Integration

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