Preparation of Long Afterglow Photoluminescent Material SrAl_2O_4: Eu~(2+), Dy~(3+) and Its Luminescent Property

XU Ming-xia; GUO Qing-jie; QIN Yu-xing

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Preparation of Long Afterglow Photoluminescent Material SrAl_2O_4: Eu~(2+), Dy~(3+) and Its Luminescent Property

机译：长余辉光致发光材料SrAl_2O_4：Eu〜（2+），Dy〜（3+）的制备及其发光性能

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Long lasting strontium aluminate phosphors were synthesized by means of coated precipitation in the experiment. SrAl_20_4 monoclinic phase with long afterglow was synthesized at 1 100 deg C with the aid of H_3B0_3, and the synthetic temperature decreased about 100 deg C-150 deg C than in solid state reaction. The process of heat treatment was studied by TG-DTA. The phase compositions of powders were analyzed by XRD. The micrographs of the samples were investigated by SEM and the luminescent properties were researched by optical spectrum. The effects of H_3 B0_3 on the phase composition and microstructure of the calcined powders were investigated. The results indicated that H_3B0_3 accelerated the formation of SrAl_20_4 by consuming the intermediate phase. The addition of Dy_20_3 stimulated the afterglow property due to the increase in the depth of the trap center in the materials.

机译：实验中通过包覆沉淀法合成了持久的铝酸锶锶荧光粉。借助H_3B0_3，在1100℃下合成了余辉长的SrAl_20_4单斜晶相，合成温度比固态反应降低了约100℃至150℃。用TG-DTA研究了热处理工艺。通过XRD分析粉末的相组成。通过SEM对样品的显微照片进行了研究，并且通过光谱研究了发光性质。研究了H_3 B0_3对煅烧粉末相组成和微观结构的影响。结果表明，H_3B0_3通过消耗中间相促进了SrAl_20_4的形成。 Dy_20_3的加入由于材料中陷阱中心深度的增加而激发了余辉性能。

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来源
《Transactions of Tianjin University》 |2004年第3期|p.201-205|共5页
作者
XU Ming-xia; GUO Qing-jie; QIN Yu-xing;
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作者单位

Key Laboratory for Advanced Ceramics and Machining Technology of Ministry of Education, School of Materials Science and Engineering, Tianjin University, Tianjin 300072, China;

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原文格式 PDF
正文语种 eng
中图分类自然科学总论;
关键词
coated precipitation; strontium aluminate; boric acid; phase conversion; long persistent phosphorescence;

机译：涂层沉淀;铝酸锶;硼酸;相转化;长期持续磷光;

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Preparation of Long Afterglow Photoluminescent Material SrAl_2O_4: Eu~(2+), Dy~(3+) and Its Luminescent Property

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