| Sr_2MgSi_2O_7/Eu_(0.01)~(2+),RE_(0.02)~(3+)长余辉发光材料的微波合成 |
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| 引用本文： | 梁青,刘文芳,宋会花.Sr_2MgSi_2O_7/Eu_(0.01)~(2+),RE_(0.02)~(3+)长余辉发光材料的微波合成[J].河北师范大学学报(自然科学版),2009,33(2). |
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| 作者姓名： | 梁青 刘文芳 宋会花 |
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| 作者单位： | [1]河北师范大学化学材料与科学学院,河北石家庄050016 [2]北京市房山中学,北京102400 |
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| 基金项目： | 河北师范大学博士基金(103261);;河北省教育厅科学研究基金(ZH2006002) |
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| 摘 要： | 首次应用微波法合成了系列蓝色长余辉发光材料Sr2MgSi2O7/Eu02.＋01,RE03.0＋2（RE^3＋=Dy^3＋,Ho^3＋,Ce^3＋,Er^3＋,Nd^3＋）,对材料进行了XRD,SEM、激发和发射光谱、余辉衰减曲线的测定.结果表明：激发峰是由250～450 nm的宽激发带组成,其中,掺杂Dy^3＋,Er^3＋,Nd^3＋荧光粉的激发光谱均为主激发峰位于310,356 nm处的宽带谱,掺杂Ce^3＋的激发光谱为主发射峰位于280,330,360 nm处的宽带光谱,掺杂Ho^3＋的激发光谱为主发射峰位于315,360,400 nm的宽带光谱;发射光谱为主发射峰位于465 nm处的宽带发射谱,该发光归属于Eu2＋的4f65d→4f7的允许电偶极宽带跃迁,并且随着Er^3＋,Dy^3＋,Nd^3＋,Ce^3＋,Ho^3＋的顺序发光强度逐渐降低.余辉衰减曲线显示初始发光亮度最高,余辉时间最长的是Sr2MgSi2O7/Eu02.0＋1,Nd03.0＋2.
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| 关 键 词： | 硅酸盐 发光材料 长余辉 微波合成 |
Microwave Synthesis of Luminescence Material of Sr_2MgSi_2O_7/Eu_(0.01)~(2+),RE_(0.02)~(3+) |
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| LIANG Qing,LIU Wen-fang,SONG Hui-hua.Microwave Synthesis of Luminescence Material of Sr_2MgSi_2O_7/Eu_(0.01)~(2+),RE_(0.02)~(3+)[J].Journal of Hebei Normal University,2009,33(2). |
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| Authors: | LIANG Qing LIU Wen-fang SONG Hui-hua |
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| Institution: | 1.College of Chemistry and Material Science;Hebei Normal University;Hebei Shijiazhuang 050016;China;2.Beijing Fangshan Middle School;Beijing 102400;China |
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| Abstract: | The luminescence material of Sr2MgSi2O7/Eu2+0.01,RE3+0.02(RE3+=Dy3+,Ho3+,Ce3+,Er3+,Nd3+) was synthesized by microwave radiation method for the first time.The crystal composition and crystal shape of the samples were characterized by X-ray diffraction(XRD) and scanning electron microscopy(SEM),respectively.The excitation and emission spectra of fluorescence were measured by fluorometry.The sample exhibited broad peaks in both the excitation and emission spectra.The main excitation peaks lied in 310,356 nm af... |
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| Keywords: | silicate luminescent materials long lasting phosphors microwave synthesis |
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