| NaGdF4：Eu^3＋的水热合成、相变与发光性质 |
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| 引用本文： | 杨智,马武军,王萌,王宇飞.NaGdF4：Eu^3＋的水热合成、相变与发光性质[J].云南师范大学学报(自然科学版),2012,32(1):8-11. |
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| 作者姓名： | 杨智 马武军 王萌 王宇飞 |
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| 作者单位： | 云南师范大学化学化工学院,云南昆明,650500 |
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| 基金项目： | 云南省自然科学基金资助项目(2007B201M) |
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| 摘 要： | 用水热法制备了NaGdF4：Eu3＋（0.5 mol%）发光材料,并研究了退火温度对NaGdF4：Eu3＋的结构和发光性质的影响。X-射线粉末衍射（XRD）结果表明：水热合成得到六方相的NaGdF4,在空气氛的条件下,NaGdF4从六方相到立方相的相转变温度为～650℃.扫描电镜（SEM）的结果显示：具有六方相结构的NaGdF4：Eu3＋发光材料的粒径为200～300nm.荧光光谱（PL）的结果表明：具有六方相结构的NaGdF4：Eu3＋粉末样品的特征发射为Eu3＋5 D0→7F2（615nm）跃迁发射。
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| 关 键 词： | NaGdF4：Eu3＋ 相转变 发光性质 SEM |
Hydrothermal Synthesis,Phase Transition and Luminescent Properties of NaGdF4:Eu3+ |
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| YANG Zhi
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MA Wu-jun
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WANG Meng
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WANG Yu-fei.Hydrothermal Synthesis,Phase Transition and Luminescent Properties of NaGdF4:Eu3+[J].Journal of Yunnan Normal University (Natural Sciences Edition),2012,32(1):8-11. |
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| Authors: | YANG Zhi MA Wu-jun WANG Meng WANG Yu-fei |
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| Institution: | (College of Chemistry and Chemical Enginering,Yunnan Normal University,Kunming 650500,China) |
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| Abstract: | NaGdF4:Eu3+were prepared by a hydrothermal process and the effects of some processing variables such as annealing temperature and time,were investigated.The crystal structure,morphology and luminescent properties of the as-prepared NaGdF4:Eu3+powders were characterized by X-ray powder diffraction(XRD),scanning electron microscopy(SEM) and photoluminescence(PL)spectra.XRD results show that the phase transition of NaGdF4:Eu3+ from the hexagonal phase to the cubic phase occurs at about 650℃ in air.SEM images indicate that the diameter of the hexagonal NaGdF4:Eu3+ microcrystals is about 200~300 nm.PL results show that the characteristic emission of hexagonal NaGdF4:Eu3+ powders is Eu3+ 5D0→7F2 transition. |
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| Keywords: | NaGdF4:Eu3+ Phase transition Luminescent properties SEM |
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