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Preparation of Long Lasting Phosphor by New Method

Published online by Cambridge University Press:  01 February 2011

Hu Jin ,
Zhu Xiaoqin ,
Chen Donghua ,
Wan Kaijun  and
Guo Yuzhong
Hu Jin
Affiliation:
hujinwcru@tom.com, Kunming University of Science and Technology, hr, hj, Kunming, NE, N/A, China, People's Republic of
Zhu Xiaoqin
Affiliation:
xiaoqinzhu@sohu.com, Kunming University of Science and Technology, Kunming, 650093, China, People's Republic of
Chen Donghua
Affiliation:
chendonghua@sina.com, Kunming University of Science and Technology, Kunming, 650093, China, People's Republic of
Wan Kaijun
Affiliation:
wangkaijun@163.com, Kunming University of Science and Technology, Kunming, 650093, China, People's Republic of
Guo Yuzhong
Affiliation:
guoyuzhong@yahoo.com, Kunming University of Science and Technology, Kunming, 650093, China, People's Republic of
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Abstract

The composite powder of Al(OH)3 and Sr(OH)2, was obtained by means of the hydrolysis of the activated Al-Sr alloy powder in pure water. As a precursor, it could be used to prepare long after phosphor Eu, Dy co-doped SrAl2O4 by the modified solid state reaction at 1300°C. The components and microstructure of the composite powder were investigated by XRD, SEM and EDS techniques, and the luminescent characteristics and the afterglow properties of the long afterglow material were also measured at the same time. The experimental results showed that, the distribution of the two elements Al and Sr was uniform in the microstructure of the composite powder, and the contacting surfaces between the solid reactants were increased effectively at high temperature, and the diffusive paths were abbreviated. Therefore, the reaction velocity was increased, the sinter temperature descended and the luminescent properties enhanced.

Keywords

luminescencepowder processinghydrothermal
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1074: Symposium I – Synthesis and Metrology of Nanoscale Oxides and Thin Films , 2008 , 1074-I10-12
Copyright
Copyright © Materials Research Society 2008

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References

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