| Enhancement of photoluminescence of Ba2SiO4：Eu^2＋ by co-doping of La^3＋ or Y^3＋ |
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| 引用本文： | 胡小野,李振华,徐欣,李永绣. Enhancement of photoluminescence of Ba2SiO4：Eu^2＋ by co-doping of La^3＋ or Y^3＋[J]. 中国稀土学报(英文版), 2009, 27(1): 47-49. DOI: 10.1016/S1002-0721(08)60188-X |
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| 作者姓名： | 胡小野 李振华 徐欣 李永绣 |
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| 作者单位： | Research Center for Rare Earths & Nano/micro Functional Materials, Institute of Advanced Study, Nanchang University, Nanchang 330031, China |
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| 基金项目： | 教育部长江学者和创新团队发展计划，the Key Project of Department of Science and Technology of Jiangxi Province |
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| 摘 要： |
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| 关 键 词： | 共掺杂 La 白色发光二极管 强光 铕 最佳掺杂浓度 还原性气氛 绿色发光 |
| 收稿时间： | 2007-07-21 |
Enhancement of photoluminescence of Ba2SiO4:Eu2+ by co-doping of La3+ or Y3+ |
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| HU Xiaoye,LI Zhenhua,XU Xin,LI Yongxiu. Enhancement of photoluminescence of Ba2SiO4:Eu2+ by co-doping of La3+ or Y3+[J]. Journal of Rare Earths, 2009, 27(1): 47-49. DOI: 10.1016/S1002-0721(08)60188-X |
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| Authors: | HU Xiaoye LI Zhenhua XU Xin LI Yongxiu |
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| Affiliation: | (Research Center for Rare Earths ＆ Nano/micro Functional Materials, Institute of Advanced Study, Nanchang University, Nanchang 330031, China) |
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| Abstract: | Green light-emitting Ba2SiO4:Eu2+ phosphors co-doped with La or Y were synthesized by conventional solid-state reaction technique in reductive atmosphere (a mixture of 5% H2 and 95% N2). The results showed that the co-doping of La and Y could greatly enhance the fluorescence intensity of Ba2SiO4:Eu2+ phosphors. The optimum doping concentration expressed by the x value in (Ba0.985-1.5xREx)2SiO4: 0.03Eu2+ (RE=La or Y) was determined to be of 0.05. The excitation and emission peaks of all as-synthesized phosphors were wide bands. The excitation bands ranged from 250 to 400 nm, which matched well with the wavelength of near ultraviolet white light-emitting diodes (LED) chip and could be used as a potential candidate for the fabrication of white LED. The emission bands from 450 to 550 nm were typical 5d-4f transition emission of Eu2+ and displayed un-symmetry profiles because of the two substitution sites of Ba2+ with Eu2+. |
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| Keywords: | Ba2SiO4:Eu2 phosphor co-doping white light-emitting diodes |
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