Fabrication of long lasting phosphorescence glass spheres

Hao Lv; Aimei Liu; Jufang Tong; Xunong Yi; Qianguang Li

doi:10.1117/12.805319

9 February 2009 Fabrication of long lasting phosphorescence glass spheres

Hao Lv, Aimei Liu, Jufang Tong, Xunong Yi, Qianguang Li

Proceedings Volume 7158, 2008 International Conference on Optical Instruments and Technology: Microelectronic and Optoelectronic Devices and Integration; 715810 (2009) https://doi.org/10.1117/12.805319
Event: International Conference of Optical Instrument and Technology, 2008, Beijing, China

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.

Citation Download Citation

Hao Lv, Aimei Liu, Jufang Tong, Xunong Yi, and Qianguang Li "Fabrication of long lasting phosphorescence glass spheres", Proc. SPIE 7158, 2008 International Conference on Optical Instruments and Technology: Microelectronic and Optoelectronic Devices and Integration, 715810 (9 February 2009); https://doi.org/10.1117/12.805319

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