| Luminescence properties of Mn2） ions doped Lu2CaMg2Si3O1） garnet phosphors |
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| 引用本文： | 李高锋,邓德刚,李银群,王倩,华有杰,徐时清.Luminescence properties of Mn2） ions doped Lu2CaMg2Si3O1） garnet phosphors[J].中国稀土学报(英文版),2012,30(3):193-196. |
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| 作者姓名： | 李高锋 邓德刚 李银群 王倩 华有杰 徐时清 |
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| 作者单位： | College of Materials Science and Engineering, China Jiliang University |
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| 基金项目： | Project supported by the National Natural Science Foundation of China (61008042 and 51072190);New Century Excellent Talents in University (NCET-07-0786);the Natural Science Foundation of Zhejiang Province (Y4080268 and Z4100030);the Science Technology Project of Zhejiang Province (2009C11149) |
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| 摘 要： | Yttrium aluminum garnet structure phosphors Lu2CaMg2Si3O12:Mn2+ were synthesized by conventional high temperature solid-state reaction in reductive atmosphere. The structure and optical properties of samples were characterized by application of powder X-ray diffraction (XRD) and photoluminescence spectroscopy. Results of X-ray diffraction (XRD) analysis showed that the phosphors mainly presented garnet structure with a few weak peaks of impurity phases. Lu2-xCaMg2Si3O12:xMn2+ (x=0.01-0.8) phosphors showed a broad emission band peaking at around 590 nm under ultraviolet (UV) light of 408 nm when Mn2+ concentration was less than 0.08 mol. With an increase in the Mn2+ concentration (above 0.08), another broad emission band peaking at 720 nm besides 590 nm was observed, which may be due to manganese ion having different valence and occupying different host lattice. The critical quenching concentrations of manganese ion in the wavelength of 590 and 720 nm were about 0.06 and 0.2 mol, respectively. With 408 nm excitation wavelength, emission color of the samples had a red shift trend as the Mn2+ concentration increased. All the results indicated that the Lu2CaMg2Si3O12:Mn2+ phosphors could be applicable to n-UV based white LEDs.
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| 关 键 词： | luminescence phosphors Lu2CaMg2Si3O12 Mn2+ rare earths |
| 收稿时间： | 31 May 2011 |
Luminescence properties of Mn2+ ions doped Lu2CaMg2Si3O12 garnet phosphors |
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| LI Gaofeng , DENG Degang , LI Yinqun , WANG Qian , HUA Youjie , XU Shiqing.Luminescence properties of Mn2+ ions doped Lu2CaMg2Si3O12 garnet phosphors[J].Journal of Rare Earths,2012,30(3):193-196. |
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| Authors: | LI Gaofeng DENG Degang LI Yinqun WANG Qian HUA Youjie XU Shiqing |
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| Affiliation: | (College of Materials Science and Engineering, China Jiliang University, Hangzhou 310018, China) |
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| Abstract: | Yttrium aluminum garnet structure phosphors Lu2CaMg2Si3O12:Mn2+ were synthesized by conventional high temperature solid-state reaction in reductive atmosphere. The structure and optical properties of samples were characterized by application of powder X-ray diffraction (XRD) and photoluminescence spectroscopy. Results of X-ray diffraction (XRD) analysis showed that the phosphors mainly presented garnet structure with a few weak peaks of impurity phases. Lu2–xCaMg2Si3O12:xMn2+ (x=0.01–0.8) phosphors showed a broad emission band peaking at around 590 nm under ultraviolet (UV) light of 408 nm when Mn2+ concentration was less than 0.08 mol. With an increase in the Mn2+ concentration (above 0.08), another broad emission band peaking at 720 nm besides 590 nm was observed, which may be due to manganese ion having different valence and occupying different host lattice. The critical quenching concentrations of manganese ion in the wavelength of 590 and 720 nm were about 0.06 and 0.2 mol, respectively. With 408 nm excitation wavelength, emission color of the samples had a red shift trend as the Mn2+ concentration increased. All the results indicated that the Lu2CaMg2Si3O12:Mn2+ phosphors could be applicable to n-UV based white LEDs. |
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| Keywords: | luminescence phosphors Lu2CaMg2Si3O12 Mn2+ rare earths |
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