| Synthesis and luminescence properties of a novel red-emitting phosphor SrCaSiO_4：Eu~（3＋） for ultraviolet white light-emitting diodes |
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| 引用本文： | 于泓,高桂梅,孔丽,李广环,甘树才,洪广言.Synthesis and luminescence properties of a novel red-emitting phosphor SrCaSiO_4：Eu~（3＋） for ultraviolet white light-emitting diodes[J].中国稀土学报(英文版),2011,29(5):431-435. |
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| 作者姓名： | 于泓 高桂梅 孔丽 李广环 甘树才 洪广言 |
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| 作者单位： | College of Chemistry;Jilin University;State Key Laboratory of Rare Earth Resource Utilization;Changchun Institute of Applied Chemistry;Chinese Academy of Sciences; |
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| 基金项目： | Project supported by the High Technology Research and Development Program Foundation of China (2007AA06Z202); Natural Science Foun-dation of Jilin Province (20070405); National Science and Technology Major Projects (2008ZX05018); the Nation Innovative Projects with Cooperation in Terms of Production,Study and Research (The exploration and utilization of oil shale) |
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| 摘 要： | A novel red phosphor based on Eu3+-activated SrCaSiO4 was successfully synthesized by conventional solid state reaction method and the photoluminescence properties were investigated. X-ray diffraction (XRD) patterns indicated that SrCaSiO4:Eu3+ phosphors belong to orthorhombic crystal system (space group=Pmnb). The photoluminescence (PL) excitation spectrum showed broad-band absorption and the strongest excitation peak at 397 nm contributed to the 7F0→5L6 transition which matched well with the emission of a...
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| 关 键 词： | 光性能 紫外 合成 白光 Eu 正交晶系 XRD 相匹配 |
| 收稿时间： | 15 October 2010 |
Synthesis and luminescence properties of a novel red-emitting phosphor SrCaSiO_4:Eu~(3+) for ultraviolet white light-emitting diodes |
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| YU Hong,GAO Guimei,KONG Li ,LI Guanghuan,GAN Shucai,HONG Guangyan.Synthesis and luminescence properties of a novel red-emitting phosphor SrCaSiO_4:Eu~(3+) for ultraviolet white light-emitting diodes[J].Journal of Rare Earths,2011,29(5):431-435. |
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| Authors: | YU Hong GAO Guimei KONG Li LI Guanghuan GAN Shucai HONG Guangyan |
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| Affiliation: | YU Hong1,GAO Guimei1,KONG Li 1,LI Guanghuan1,GAN Shucai1,HONG Guangyan 2 (1. College of Chemistry,Jilin University,Changchun 130026,China,2. State Key Laboratory of Rare Earth Resource Utilization,Changchun Institute of Applied Chemistry,Chinese Academy of Sciences,Changchun 130022,China) |
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| Abstract: | A novel red phosphor based on Eu3+-activated SrCaSiO4 was successfully synthesized by conventional solid state reaction method and the photoluminescence properties were investigated. X-ray diffraction (XRD) patterns indicated that SrCaSiO4: Eu3+ phosphors belong to orthorhombic crystal system (space group=Pmnb). The photoluminescence (PL) excitation spectrum showed broad-band absorption and the strongest excitation peak at 397 nm contributed to the 7F0→5L6 transition which matched well with the emission of a UV chip. The PL emission spectrum with the peaks at 577, 586, 592, 612, 650 and 685 nm, were probably attributed to the transitions from 5D0 to 7FJ (J=0, 1, 2, 3, 4) of Eu3+ ions. The quenching concentration of Eu3+ was 10 mol.%, and the critical distance (Rc) was about 1.2 nm. The fluorescence lifetime of Eu3+ ions was found to be 3.2 ms. The results indicated that the SrCaSiO4: Eu3+ might become an important red phosphor candidate for white-light-emitting diodes with near-UV LED chips. |
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| Keywords: | phosphor SrCaSiO4:Eu3 photoluminescence transition rare earths |
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