| Sol-Gel Synthesis and Luminescence of Green Light Emitting Phosphors Zn2SiO4/Mn^2＋ |
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| 引用本文： | 赵林,阎晓敏,邵建辉.Sol-Gel Synthesis and Luminescence of Green Light Emitting Phosphors Zn2SiO4/Mn^2＋[J].天津大学学报(英文版),2006,12(1):33-36. |
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| 作者姓名： | 赵林 阎晓敏 邵建辉 |
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| 作者单位： | SCHOOL OF ENVIRONMENT SCIENCE AND ENGINEERING TIANJIN UNIVERSITY TIANJIN 300072，CHINA，SCHOOL OF ENVIRONMENT SCIENCE AND ENGINEERING TIANJIN UNIVERSITY，TIANJIN 300072，CHINA，SINOCHEM PHARMACEUTICAL (TIANJIN) CO. LTD，TIANJIN 300060，CHINA |
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| 摘 要： | MN2 DOPED ZN2SIO4 PHOSPHORS WERE SYNTHESIZED BY SOL-GEL METHOD, AND THE INFLUENCE OF ZINC SOURCE. MN2 DOPANT CONCENTRATION AND ANNEALING TEMPERATURE WERE INVESTIGATED. RESULTS SHOW THAT ZINC NITRATE BASED PRECURSOR WITH STRONG GREEN EMISSION INTENSITIES IS BETTER THAN ZINC ACETATE BASED PRECURSOR. THE INTENSITY OF GREEN LIGHT EMISSION REACHES A PEAK AT 254 NM WHEN THE MN2 DOPANT CONCENTRATION IS ABOUT 5%( MOLAR PERCENTAGE). STRUCTURAL DETAILS OF THE PHOSPHORS WERE EXAMINED THROUGH X-RAY DIFFRACTOMETRY. THERMOGRAVIMETRIC AND DIFFERENTIAL THERMAL ANALYSIS. THE RESULT INDICATES THAT THEY ARE BOTH RHOMBOHEDRAL STRUCTURES, WHICH REMAIN AMORPHOUS BELOW 700 ℃ AND CRYSTALLIZE COMPLETELY AROUND 1 000 ℃. THE LUMINESCENT PROPERTIES OF ZN:SIO4/MN2 PHOSPHORS WERE CHARACTERIZED BY EXCITATION AND EMISSION SPECTRA.
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| 关 键 词： | 磷光体 绿光荧光材料 硅酸锌 锰 溶胶-凝胶法 发光性能 |
| 收稿时间： | 2005-09-23 |
Sol-Gel Synthesis and Luminescence of Green Light Emitting Phosphors Zn2SiO4/Mn2+ |
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| ZHAO Lin,YAN Xiaomin,SHAO Jianhui.Sol-Gel Synthesis and Luminescence of Green Light Emitting Phosphors Zn2SiO4/Mn2+[J].Transactions of Tianjin University,2006,12(1):33-36. |
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| Authors: | ZHAO Lin YAN Xiaomin SHAO Jianhui |
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| Abstract: | Mn2+ doped Zn2SiO4 phosphors were synthesized by sol-gel method, and the influence of zinc source, Mn2+ dopant concentration and annealing temperature were investigated. Results show that zinc nitrate based precursor with strong green emission intensities is better than zinc acetate based precursor. The intensity of green light emission reaches a peak at 254 nm when the Mn2+ dopant concentration is about 5%( molar percentage). Structural details of the phosphors were examined through X-ray diffractometry, thermogravimetric and differential thermal analysis. The result indicates that they are both rhombohedral structures, which remain amorphous below 700 ℃and crystallize completely around 1 000℃. The luminescent properties of Zn2SiO4/Mn2+ phosphors were characterized by excitation and emission spectra. |
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| Keywords: | sol-gel method Mn2 doped zinc silicate luminescence |
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