光谱学与光谱分析 |
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Study on Self-Propagating Synthesis of the Doped SrAl2O4 Rare Earth Long Afterglow Phosphors |
LI Yuan, ZHAO Yong-liang*, LIU Yong-gang,WEI Xiao-yan,REN Yue |
College of Chemistry and Chemical Engineering, Inner Mongolia University, Huhhot 010021, China |
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Abstract Twenty one doped SrAl2O4 long after-glowed phosphors with 4 series were synthesized by self-propagating high-temperature synthesis method (SHS) with urea-nitrate solution which served as media at 600 ℃. They are SrAl2O4∶Eu2+0.012 5, RE3+0.012 5(RE3+=Ce3+, Pr3+, Nd3+, Tb3+, Dy3+), SrAl2O4∶Eu2+0.012 5, M0.012 5(M=Li+, Be2+, Cd2+, Mn2+, Cu2+, Ag+, Zn2+, Pb2+), SrAl2O4∶Eu2+0.012 5, Dy3+0.012 5, M0.012 5(M=Mn2+, Cu2+, Ag+, Zn2+), and SrAl2O4∶Eu2+0.012 5, Dy3+0.012 5,RE3+0.012 5(RE3+=Ce3+, Pr3+, Nd3+, Tb3+), of which luminescence and after-glowing features were tested. The morphology of all these samples presents a state of porosity and laxity. The samples show an intense emission peak at 514 nm and broad peaks of the excitation spectra at 290~360 nm, Tb3+ and Dy3+ had most effects on luminance and after-glowed time respectively. The SrAl2O4∶Eu2+0.012 5, Dy3+0.012 5 had good luminance and proper after-glowed time as well.
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Received: 2010-04-12
Accepted: 2010-07-11
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Corresponding Authors:
ZHAO Yong-liang
E-mail: hxzhaoyl@163.com
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