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Proceedings Paper

Blue-emitting long-afterglow photoluminescence phosphor
Author(s): Zhiping Yang; Shengchao Zhu; Zhi Guo; Wenjie Wang; Zheng Liu
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Paper Abstract

By changing the ratio of Al:Sr, we get a new type phosphor SeAl3O5(OH):Eu2+,Dy3+ emitting blue light with the afterglow characteristics of over 10 hours. The emitting peak is at 484nm, which is corresponding to the spectral transition 4f5d of Eu2+. The influence of different temperatures and different fluex on the luminescent properties of SrAl3O5(OH):Eu2+,Dy3+ was studied. The results indicate that increasing the sintering temperature helps crystal to grow, and that the luminescent properties of SrAl3O5(OH):Eu2+,Dy3+ is improved by higher temperature or the flux especially H3BO3, which increases the initial brightness and prolongs the afterglow time comparing with the SrAl3O5(OH):Eu2+,Dy3+ that without additives.

Paper Details

Date Published: 17 September 2002
PDF: 7 pages
Proc. SPIE 4918, Materials, Devices, and Systems for Display and Lighting, (17 September 2002); doi: 10.1117/12.483107
Show Author Affiliations
Zhiping Yang, Hebei Univ. (China)
Shengchao Zhu, Hebei Univ. (China)
Zhi Guo, Hebei Univ. (China)
Wenjie Wang, Hebei Univ. (China)
Zheng Liu, Hebei Univ. (China)

Published in SPIE Proceedings Vol. 4918:
Materials, Devices, and Systems for Display and Lighting
Fuxi Gan; Ming Hsien Wu; Lionel C. Kimerling, Editor(s)

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