| BaMoO_4:Eu~(3+)红色荧光粉的制备及发光性质 |
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| 引用本文： | 黄培帅,魏建设,周立亚.BaMoO_4:Eu~(3+)红色荧光粉的制备及发光性质[J].化工技术与开发,2009,38(4). |
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| 作者姓名： | 黄培帅 魏建设 周立亚 |
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| 作者单位： | 1. 广西上思县上思中学,广西,上思,535500;广西大学化学化工学院,广西,南宁,530004
2. 广西大学化学化工学院,广西,南宁,530004 |
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| 基金项目： | 广西自治区科学基金，广西大型仪器协作共用网资助项目 |
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| 摘 要： | 采用柠檬酸溶胶-凝胶法制备了BaMoO4:Eu3+红色荧光粉,差热(DSC) 和X射线衍射(XRD)研究结果表明,经过700 ℃高温烧结后可得到BaMoO4纯物相.粒度分析结果表明,经700 ℃烧结后样品的粒径约为 200 nm,随着烧结温度的升高,产物的粒径明显增大,当烧结温度为800 ℃时,样品的粒径约为 500 nm.分别以392 nm 的近紫外光和 462 nm 的可见光激发样品,BaMoO4:Eu3+荧光粉发红光,对应于Eu3+的4f-4f跃迁,其中以615 nm附近的5D0→7F2电偶极跃迁发光最强,当Eu3+的掺杂浓度约为25 mol %时,在616 nm处的发光强度最大.荧光粉在392 nm和462 nm的吸收分别与紫外光和蓝光LED芯片相匹配.因此,BaMoO4:Eu3+荧光粉是一种可能应用在白光LED上的红色荧光材料.
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| 关 键 词： | 溶胶-凝胶 光致发光 |
Synthesis and Photoluminesceoce of BaMoO_4:Eu~(3+) Phosphor |
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| HUANG Pei-Shuai,WEI Jian-She,ZHOU Li-Ya.Synthesis and Photoluminesceoce of BaMoO_4:Eu~(3+) Phosphor[J].Technology & Development of Chemical Industry,2009,38(4). |
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| Authors: | HUANG Pei-Shuai WEI Jian-She ZHOU Li-Ya |
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| Affiliation: | 1.Shangsi Middle School;Shangsi 535500;China;2.School of Chemistry and Chemical Engineering;Guangxi University;Nanning 530004;China |
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| Abstract: | BaMoO4:Eu3+ phosphors with a precursor were prepared by citric acid sol-gel method at relatively low temperature.X-ray diffraction and DSC results confirmed the formation of BaMoO4.Particle size distribution showed that BaMoO4:Eu3+ had a diameter around 200 nm.This new method was very simple and had the advantages of small particle size and narrow particle size distribution.Upon excitation with 392 nm and 462 nm light,all the BaMoO4:Eu3+ phosphors showed bright red emission due to the 4f-4f transitions of E... |
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| Keywords: | BaMoO4:Eu3 |
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