| Preparation and luminescent properties of MgTiO3：Eu3＋ phosphor for white LEDs |
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| 作者姓名： | ZHANG Jian YIN Jing LIU Panpan GAO Bin BIE Lijian |
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| 作者单位： | [1]School of Materials Science and Engineering, Tianjin University of Technology, Tianjin 300384, China [2]School of Environmental Science and Safety Engineering, Tianjin University of Technology, Tianjin 300384, China [3]Tianjin Key Lab for Photoelectric Materials ＆ Devices, Tianjin University of Technology, Tianjin 300384, China |
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| 基金项目： | Foundation item： Project supported by National Natural Science Foundation of China （21271139） and Tianjin Natural Science Foundation （08JCZDJC 18700） |
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| 摘 要： | A novel red phosphor Eu3+ doped magnesium titanate (MgTiO3) was synthesized via sol-gel method. The X-ray diffraction patterns (XRD) revealed that a pure MgTiO3 phase was obtained. Its excitation spectrum consisted of a broad band (<350nm) and a series of narrow bands in the long wavelength, and the strongest excitation peak at 465nm might be exited by GaN-chip to emit red light for white LED. The phosphors showed strong emission at 614nm which could be attributed to the 5D0→7F2 emission of Eu3+ . The emission intensity of MgTiO3:Eu3+ phosphor reached the maximum at the Eu3+ concentration of 3.5mol.%. The luminescent properties (such as emission intensity and decay times) were further improved by introducing Al3+ as a charge compensator, demonstrating potential applications in white LED.
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| 关 键 词： | phosphor magnesium titanate light-emitting diode luminescence rare earths |
| 收稿时间： | 7 February 2012 |
Preparation and luminescent properties of MgTiO3：Eu3＋ phosphor for white LEDs |
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| ZHANG Jian,YIN Jing,LIU Panpan,GAO Bin,BIE Lijian.Preparation and luminescent properties of MgTiO3：Eu3＋ phosphor for white LEDs[J].Journal of Rare Earths,2012,30(10):1009-1012. |
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| Authors: | Journal of Rare Earths |
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| Affiliation: | 1,3 (1. School of Materials Science and Engineering, Tianjin University of Technology, Tianjin 300384, China; 2. School of Environmental Science and Safety Engineering, Tianjin University of Technology, Tianjin 300384, China; 3. Tianjin Key Lab for Photoelectric Materials & Devices, Tianjin University of Technology, Tianjin 300384, China) |
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| Abstract: | A novel red phosphor Eu3+ doped magnesium titanate (MgTiO3) was synthesized via sol-gel method. The X-ray diffraction patterns (XRD) revealed that a pure MgTiO3 phase was obtained. Its excitation spectrum consisted of a broad band (<350 nm) and a series of narrow bands in the long wavelength, and the strongest excitation peak at 465 nm might be exited by GaN-chip to emit red light for white LED. The phosphors showed strong emission at 614 nm which could be attributed to the 5D0→7F2 emission of Eu3+. The emission intensity of MgTiO3:Eu3+ phosphor reached the maximum at the Eu3+ concentration of 3.5 mol.%. The luminescent properties (such as emission intensity and decay times) were further improved by introducing Al3+ as a charge compensator, demonstrating potential applications in white LED. |
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| Keywords: | phosphor magnesium titanate light-emitting diode luminescence rare earths |
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