| pr3+ 激活的CaMoO4红色荧光粉的发光性质 |
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| 引用本文： | 张丹丹,石士考,罗鸣,刘行仁,周济.pr3+ 激活的CaMoO4红色荧光粉的发光性质[J].发光学报,2012,33(8):840-844. |
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| 作者姓名： | 张丹丹 石士考 罗鸣 刘行仁 周济 |
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| 作者单位： | 1. 河北师范大学 化学与材料科学学院, 河北 石家庄 050024;2. 中国科学院 长春光学精密机械与物理研究所, 吉林 长春 130033;3. 清华大学 材料科学与工程系, 北京 100084 |
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| 基金项目： | 国家自然科学基金(20971035);河北省自然科学基金(08B012,B2010000370);河北省教育厅基金(2009136)资助项目 |
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| 摘 要： | 采用高温固相法制备了稀土pr3+激活的Ca1-xPrxMoO4(0.005≤x≤0.02)系列红色荧光粉.荧光光谱表明:在453 nm激发下,样品产生了红光发射,其中对应于pr3+的特征跃迁3 P0→3F2位于654 nm的红色发射峰最强.分析了pr3的掺杂摩尔分数x对样品发光强度的影响,确定pr3+的最佳掺杂摩尔分数...
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| 关 键 词： | CaMoO4 pr3+离子 发光 电荷补偿 |
| 收稿时间： | 2012/5/22 |
Luminescent Properties of Pr3+-activated CaMoO4 Red Phosphors |
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| ZHANG Dan-dan
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SHI Shi-kao
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LUO Ming
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LIU Xing-ren
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ZHOU Ji.Luminescent Properties of Pr3+-activated CaMoO4 Red Phosphors[J].Chinese Journal of Luminescence,2012,33(8):840-844. |
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| Authors: | ZHANG Dan-dan SHI Shi-kao LUO Ming LIU Xing-ren ZHOU Ji |
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| Institution: | 1. College of Chemistry & Materials Science, Hebei Normal University, Shijiazhuang 050024, China;2. Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China;3. Department of Materials Science & Engineering, Tsinghua University, Beijing 100084, China |
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| Abstract: | Red-light-emitting phosphors of Pr3+ activated Ca1-xPrxMoO4 were synthesized by high temperature solid state reaction.The luminescence spectra of samples indicate that under the excitation of 453 nm,all samples produce red emission peak at 654 nm corresponding to the characteristic transition of Pr3+(3P0→3F2).The influence of Pr3+ doping mole fraction(x) on the luminescent intensity of samples was analyzed.The optimum doping mole fraction of Pr3+ was x=0.01.In order to further improve the luminescent efficiency,two charge compensation approaches were applied:(1) two Ca2+ ions were replaced by one Pr3+ ion and one M+(M=Li,Na) ion and(2) three Ca2+ ions were replaced by two Pr3+ ions.It is found that both charge compensation approaches can obviously improve the red luminescent intensity.In particular the relative emission intensity of Ca0.98Pr0.01Li0.01MoO4 reached more than 3.17-fold as compared with that of the sample without the charge compensation. |
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| Keywords: | Ca2MoO4 Pr3+ ion luminescence charge compensation |
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