| Luminescence Properties of Green-Emitting Phosphor （Ba1- x, Srx ） 2 SiO4 ： EU^2＋ for White LEDS |
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| 引用本文： | 刘红利,何大伟,沈芳.Luminescence Properties of Green-Emitting Phosphor （Ba1- x, Srx ） 2 SiO4 ： EU^2＋ for White LEDS[J].中国稀土学报(英文版),2006,24(1):121-124. |
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| 作者姓名： | 刘红利 何大伟 沈芳 |
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| 作者单位： | Ministry of Education Key Laboratory, Laboratory of Materials for Information Storage and Display, Institute of Photoelectron Technology, Beijing Jiaotong University, Beijing 100044, China |
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| 基金项目： | Project supported by National Natural Foundation of China （59982001） and Natural Science Foundation of Beijing （2052019） |
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| 摘 要： | The （Ba1- x, Srx ） 2 SiO4 ： EU^2＋ green-emitting phosphors were synthesized by conventional solid-state reaction in a CO-reductive atmosphere, and their luminescent properties were investigated. The XRD data show that the Ba/Sr ratio not only affects the lattice parameters, but also influences the emission peak. The excitation spectra indicate that this phosphor can be effectively excited by UV light from 370 to 470 nm. The emission band is due to the 4f^65d^1→4f^7 transition of the Eu^2＋ ion. With an increase in x, the emission band shifts to longer wavelength and the reason was discussed. The emission spectra exhibit a satisfactory green performance under different excitation wavelength（380,398,412,420,460 nm）. （Ba1- x, Srx ） 2 SiO4 ： EU^2＋ is a promising phosphor for green white-lighting-emission diode by ultraviolet chip.
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| 关 键 词： | 稀土 荧光材料 发光性能 掺杂 |
| 文章编号： | 1002-0721（2006）01-0121-04 |
| 收稿时间： | 2005-08-01 |
| 修稿时间： | 2005-09-18 |
Luminescence Properties of Green-Emitting Phosphor (Ba1-x, Srx)2 SiO4:Eu for White LEDS |
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| Hongli , Dawei He,Fang Shen.Luminescence Properties of Green-Emitting Phosphor (Ba1-x, Srx)2 SiO4:Eu for White LEDS[J].Journal of Rare Earths,2006,24(1):121-124. |
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| Authors: | Hongli Dawei He Fang Shen |
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| Affiliation: | Ministry of Education Key Laboratory, Laboratory of Materials for Information Storage and Display, Institute of Photoelectron Technology, Beijing Jiaotong University, Beijing 100044, China |
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| Abstract: | The (Ba1-xSrx)2SiO4:Eu2+ green-emitting phosphors were synthesized by conventional solid-state reaction in a CO-reductive atmosphere, and their luminescent properties were investigated. The XRD data show that the Ba/Sr ratio not only affects the lattice parameters, but also influences the emission peak. The excitation spectra indicate that this phosphor can be effectively excited by UV light from 370 to 470 nm. The emission band is due to the 4f65d1→4f7 transition of the Eu2+ ion. With an increase in x, the emission band shifts to longer wavelength and the reason was discussed. The emission spectra exhibit a satisfactory green performance under different excitation wavelength (380, 398, 412, 420, 460 nm). (Ba1-xSrx)2SiO4:Eu2+ is a promising phosphor for green white-lighting-emission diode by ultraviolet chip. |
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| Keywords: | phosphor silicate luminescence rare earths |
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