Study on Synthesis and Properties of K<sub>2</sub>SiF<sub>6</sub>: Mn<sup>4+</sup> Phosphor
K<sub>2</sub>SiF<sub>6</sub>:Mn<sup>4+</sup> 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 surfac...
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| Format: | Article |
| Language: | zho |
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Journal of Materials Engineering
2018-08-01
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| Series: | Cailiao gongcheng |
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| Online Access: | http://jme.biam.ac.cn/CN/Y2018/V46/I8/51 |
| _version_ | 1828077457725456384 |
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| author | HE Qing-yang ZHU Yue-hua ZHUO Ning-ze WANG Hai-bo |
| author_facet | HE Qing-yang ZHU Yue-hua ZHUO Ning-ze WANG Hai-bo |
| author_sort | HE Qing-yang |
| collection | DOAJ |
| description | K<sub>2</sub>SiF<sub>6</sub>:Mn<sup>4+</sup> 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 K<sub>2</sub>SiF<sub>6</sub>:Mn<sup>4+</sup> was coated with SiO<sub>2</sub> to improve the thermal stability of K<sub>2</sub>SiF<sub>6</sub>:Mn<sup>4+</sup> 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 K<sub>2</sub>SiF<sub>6</sub>:Mn<sup>4+</sup>, the sample has cubic structure. At 460nm excitation, the strongest narrowband emission peak is located at 630nm (<sup>2</sup>E<sub>g</sub> → <sup>4</sup>A<sub>2</sub>). The crystal structure of K<sub>2</sub>SiF<sub>6</sub>:Mn<sup>4+</sup> phosphor coated with SiO<sub>2</sub> has not been changed. The results show that the thermal stability of the K<sub>2</sub>SiF<sub>6</sub>:Mn<sup>4+</sup> phosphor coated with SiO<sub>2</sub> is improved. |
| first_indexed | 2024-04-11T02:29:43Z |
| format | Article |
| id | doaj.art-f597870f63c14b4b8100901511e5fb9b |
| institution | Directory Open Access Journal |
| issn | 1001-4381 1001-4381 |
| language | zho |
| last_indexed | 2024-04-11T02:29:43Z |
| publishDate | 2018-08-01 |
| publisher | Journal of Materials Engineering |
| record_format | Article |
| series | Cailiao gongcheng |
| spelling | doaj.art-f597870f63c14b4b8100901511e5fb9b2023-01-02T21:46:53ZzhoJournal of Materials EngineeringCailiao gongcheng1001-43811001-43812018-08-01468515610.11868/j.issn.1001-4381.2016.001243201808001243Study on Synthesis and Properties of K<sub>2</sub>SiF<sub>6</sub>: Mn<sup>4+</sup> PhosphorHE Qing-yang0ZHU Yue-hua1ZHUO Ning-ze2WANG Hai-bo3College of Materials Science and Engineering, Nanjing Tech University, Nanjing 210009, ChinaResearch Institute of Electric Light Source Materials, Nanjing Tech University, Nanjing 210015, ChinaResearch Institute of Electric Light Source Materials, Nanjing Tech University, Nanjing 210015, ChinaResearch Institute of Electric Light Source Materials, Nanjing Tech University, Nanjing 210015, ChinaK<sub>2</sub>SiF<sub>6</sub>:Mn<sup>4+</sup> 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 K<sub>2</sub>SiF<sub>6</sub>:Mn<sup>4+</sup> was coated with SiO<sub>2</sub> to improve the thermal stability of K<sub>2</sub>SiF<sub>6</sub>:Mn<sup>4+</sup> 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 K<sub>2</sub>SiF<sub>6</sub>:Mn<sup>4+</sup>, the sample has cubic structure. At 460nm excitation, the strongest narrowband emission peak is located at 630nm (<sup>2</sup>E<sub>g</sub> → <sup>4</sup>A<sub>2</sub>). The crystal structure of K<sub>2</sub>SiF<sub>6</sub>:Mn<sup>4+</sup> phosphor coated with SiO<sub>2</sub> has not been changed. The results show that the thermal stability of the K<sub>2</sub>SiF<sub>6</sub>:Mn<sup>4+</sup> phosphor coated with SiO<sub>2</sub> is improved.http://jme.biam.ac.cn/CN/Y2018/V46/I8/51K<sub>2</sub>SiF<sub>6</sub>:Mn<sup>4+</sup>K/Mnred phosphorstructure and propertySiO<sub>2</sub> coating |
| spellingShingle | HE Qing-yang ZHU Yue-hua ZHUO Ning-ze WANG Hai-bo Study on Synthesis and Properties of K<sub>2</sub>SiF<sub>6</sub>: Mn<sup>4+</sup> Phosphor Cailiao gongcheng K<sub>2</sub>SiF<sub>6</sub>:Mn<sup>4+</sup> K/Mn red phosphor structure and property SiO<sub>2</sub> coating |
| title | Study on Synthesis and Properties of K<sub>2</sub>SiF<sub>6</sub>: Mn<sup>4+</sup> Phosphor |
| title_full | Study on Synthesis and Properties of K<sub>2</sub>SiF<sub>6</sub>: Mn<sup>4+</sup> Phosphor |
| title_fullStr | Study on Synthesis and Properties of K<sub>2</sub>SiF<sub>6</sub>: Mn<sup>4+</sup> Phosphor |
| title_full_unstemmed | Study on Synthesis and Properties of K<sub>2</sub>SiF<sub>6</sub>: Mn<sup>4+</sup> Phosphor |
| title_short | Study on Synthesis and Properties of K<sub>2</sub>SiF<sub>6</sub>: Mn<sup>4+</sup> Phosphor |
| title_sort | study on synthesis and properties of k sub 2 sub sif sub 6 sub mn sup 4 sup phosphor |
| topic | K<sub>2</sub>SiF<sub>6</sub>:Mn<sup>4+</sup> K/Mn red phosphor structure and property SiO<sub>2</sub> coating |
| url | http://jme.biam.ac.cn/CN/Y2018/V46/I8/51 |
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