| 蓝色荧光粉Sr3LnM(PO4)3F:Eu2+的发光调控 |
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| 引用本文： | 王维昊,王延惠,叶凯文,胡一凡.蓝色荧光粉Sr3LnM(PO4)3F:Eu2+的发光调控[J].人工晶体学报,2022,51(4):679-686. |
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| 作者姓名： | 王维昊 王延惠 叶凯文 胡一凡 |
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| 作者单位： | 广东第二师范学院化学与材料科学学院,广州 510800 |
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| 基金项目： | 广东省2021年度大学生创新创业训练计划(S202114278011);广州市科技计划(202102020458);广东第二师范学院博士科研专项经费研究项目(2016ARF01) |
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| 摘 要： | 采用高温固相法合成了一系列Eu2+激活的Sr3LnM(PO4)3F(Ln=Gd, La, Y; M= Na, K)荧光粉,并通过X射线衍射、扫描电子显微镜、荧光光谱等对样品的物相结构、形貌和发光特性进行了表征及分析。结果表明:成功合成了Sr3LnM(PO4)3F:Eu2+荧光粉,样品的粒径为2~10 μm。荧光粉在蓝光区具有强烈的发射,归属为发光中心Eu2+的4f65d→4f7跃迁。当基质中的碱金属M由Na变成K时,Eu2+的发光颜色由淡蓝色变成深蓝色,色纯度大幅提高,有效地调控了Eu2+在氟磷灰石Sr3LnM(PO4)3F中的发光,进而发现了一种通过改变第二层配位原子来调控Eu2+发光的策略。
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| 关 键 词： | 稀土发光材料 蓝色荧光粉 Eu2+ 高温固相法 氟磷灰石 发光调控 第二层配位原子 色纯度 |
| 收稿时间： | 2022-01-12 |
Luminescence Regulation of Blue Phosphor Sr3LnM(PO4)3F:Eu2+ |
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| WANG Weihao,WANG Yanhui,YE Kaiwen,HU Yifan.Luminescence Regulation of Blue Phosphor Sr3LnM(PO4)3F:Eu2+[J].Journal of Synthetic Crystals,2022,51(4):679-686. |
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| Authors: | WANG Weihao WANG Yanhui YE Kaiwen HU Yifan |
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| Affiliation: | College of Chemistry and Materials Science, Guangdong University of Education, Guangzhou 510800, China |
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| Abstract: | A series of Eu2+ -activated Sr3LnM(PO4)3F(Ln=Gd, La, Y; M=Na, K) phosphors were synthesized by high-temperature solid-phase method. The phase structure, morphology and luminescence characteristics of the samples were characterized by X-ray diffraction, scanning electron microscopy, fluorescence spectroscopy and other test methods. The experimental results demonstrate that the phosphor Sr3LnM(PO4)3F:Eu2+ was successfully synthesized, and the particle size of the sample ranges from 2 μm to 10 μm. The phosphor has strong emission in the blue-light region, which is attributed to the 4f65d→4f7 transition of the luminescent center Eu2+. The emitting color of Eu2+ changes from light blue to dark blue and the color purity increases after the transformation of Na to K, which effectively regulates the luminescence of Eu2+ in fluorapatite Sr3LnM(PO4)3F. A new strategy by substituting of the secondary layer coordination atom is found to regulate the phosphors color of Eu2+. |
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| Keywords: | rare earth luminescent material blue phosphor Eu2+ high-temperature solid-phase method fluorapatite luminescence regulation secondary layer coordination atom color purity |
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