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Study on Self-Propagating Synthesis of the Doped SrAl2O4 Rare-Earth Long After-Glowed Phosphors

Author: LiuYongGang
Tutor: ZhaoYongLiang
School: Inner Mongolia University
Course: Inorganic Chemistry
Keywords: Long afterglow aluminates self-propagating high-temperature synthesis(SHS) long duration phosphor
CLC: O611.4
Type: Master's thesis
Year: 2006
Downloads: 109
Quote: 1
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Abstract


62 codoped SrAl2O4 long after-glowed phosphors with 6 series are synthesized by SHS method using urea-nitrate solution as media at 600 ℃. They are SrAl2O4: Eux2+, Dyy3+, （x:y=1:1, x:y=2:1）, SrAl2O4: Eu0.01252+, RE0.01253+ (RE3+=Ce3+、Pr3+、Nd3+、Tb3+、Dy3+), SrAl2O4: Eu0.01252+, M0.0125(M=Li+, Be2+, Cd2+,Mn2+, Cu2+, Ag+, Zn2+, Pb2+) SrxM（1-x）Al2O4: Eu0.01252+, Dy0.01253+ (M=Li+, Be2+, Cd2+, Zn2+, Pb2+), SrAl2O4: Eu0.01252+,Dy0.01253+, M0.0125 (M=Mn2+, Cu2+, Ag+, Zn2+, Pb2+) , SrAl2O4: Eu0.01252+, Dy0.01253+, RE0.01253+ (RE3+=Ce3+、Pr3+、Nd3+、Tb3+), luminescent and after-glowing features are tested . Morphology of the sample presents a state of laxity and porous . The sample exhibits an intensity emission peak at 514 nm and the excitation spectra consists of 290-360nm broad peaks .Among the five RE3+ ions with +4 valence discussed in this paper, Tb3+ and Dy3+ lay the most effect on luminance and after-glowed time respectively . The material with SrAl2O4: Eu0.01252+, Dy0.01253+ has good luminance and proper after-glowed

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CLC: > Mathematical sciences and chemical > Chemistry > Inorganic Chemistry > Chemical elements and inorganic compounds > Inorganic synthetic chemistry
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