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材料工程  2018, Vol. 46 Issue (8): 51-56    DOI: 10.11868/j.issn.1001-4381.2016.001243
  研究论文 本期目录 | 过刊浏览 | 高级检索 |
K2SiF6:Mn4+发光粉的合成及性能研究
何清洋1, 朱月华2, 卓宁泽2, 王海波2
1. 南京工业大学 材料科学与工程学院, 南京 210009;
2. 南京工业大学 电光源材料研究所, 南京 210015
Study on Synthesis and Properties of K2SiF6: Mn4+ Phosphor
HE Qing-yang1, ZHU Yue-hua2, ZHUO Ning-ze2, WANG Hai-bo2
1. College of Materials Science and Engineering, Nanjing Tech University, Nanjing 210009, China;
2. Research Institute of Electric Light Source Materials, Nanjing Tech University, Nanjing 210015, China
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摘要 采用高效离子交换法制备K2SiF6:Mn4+荧光粉,研究不同K/Mn原料摩尔比和不同反应时间对K2SiF6:Mn4+荧光粉结构及性能的影响,并采用溶胶-凝胶法对制备的K2SiF6:Mn4+荧光粉表面包覆SiO2来提高K2SiF6:Mn4+荧光粉的热稳定性。通过XRD,SEM,EDS,PL等方法对样品结构、表面形貌、元素组成和发光性能进行测试和分析。结果表明:当K与Mn原料摩尔比为43:38,反应8h制备的K2SiF6:Mn4+荧光粉样品具有立方晶系结构并且发光性能最优,在460nm的蓝光激发下,最强窄带发射峰位于630nm处(2Eg4A2)。包覆后的K2SiF6:Mn4+红色荧光粉的表面上包覆了一层无定形的SiO2,晶体结构没有改变。包覆前后荧光粉的发光性能测试结果表明包覆SiO2的K2SiF6:Mn4+ 样品的热稳定性得到改善。
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何清洋
朱月华
卓宁泽
王海波
关键词 K2SiF6:Mn4+K/Mn红色荧光粉结构与性能SiO2包覆    
Abstract:K2SiF6:Mn4+ phosphor was prepared by wet chemical etching, and the effect of the raw material molar ratio of K/Mn of different materials and different reaction time on the structure and properties of phosphor was studied,the surface of K2SiF6:Mn4+ was coated with SiO2 to improve the thermal stability of K2SiF6:Mn4+ phosphor by sol-gel method. The structure, morphology, excitation spectrum and emission spectrum of phosphor powder were characterized by X-ray diffraction, scanning electron microscope and fluorescence spectrometer. The results show that the change of K/Mn ratio does not change the crystal structure of K2SiF6:Mn4+, the sample has cubic structure. At 460nm excitation, the strongest narrowband emission peak is located at 630nm (2Eg4A2). The crystal structure of K2SiF6:Mn4+ phosphor coated with SiO2 has not been changed. The results show that the thermal stability of the K2SiF6:Mn4+ phosphor coated with SiO2 is improved.
Key wordsK2SiF6:Mn4+    K/Mn    red phosphor    structure and property    SiO2 coating
收稿日期: 2016-10-15      出版日期: 2018-08-17
中图分类号:  TQ137  
通讯作者: 王海波(1963-),男,教授,硕士,从事专业:稀土发光材料,联系地址:江苏省南京市鼓楼区金川门外5号(210015),E-mail:wanghaibo88@163.com     E-mail: wanghaibo88@163.com
引用本文:   
何清洋, 朱月华, 卓宁泽, 王海波. K2SiF6:Mn4+发光粉的合成及性能研究[J]. 材料工程, 2018, 46(8): 51-56.
HE Qing-yang, ZHU Yue-hua, ZHUO Ning-ze, WANG Hai-bo. Study on Synthesis and Properties of K2SiF6: Mn4+ Phosphor. Journal of Materials Engineering, 2018, 46(8): 51-56.
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http://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2016.001243      或      http://jme.biam.ac.cn/CN/Y2018/V46/I8/51
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