| Ce~(3+)、Sm~(3+)共掺杂YAG的制备及其发光性能的研究 |
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| 引用本文： | 李亚楠,王瑶,徐丽芝,肖尊宏.Ce~(3+)、Sm~(3+)共掺杂YAG的制备及其发光性能的研究[J].贵州师范大学学报(自然科学版),2013,31(1):107-110. |
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| 作者姓名： | 李亚楠 王瑶 徐丽芝 肖尊宏 |
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| 作者单位： | 贵州师范大学化学与材料科学学院,贵州贵阳,550001 |
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| 基金项目： | 贵州省科技基金项目(黔科合J字[2011]2077) |
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| 摘 要： | 用共沉淀法合成YAG:(Ce3+-Sm3+)前驱体后,在N2还原气氛下用高温灼烧法制备YAG:(Ce3+-Sm3+)荧光粉,并对Sm3+的掺杂浓度、样品的晶相以及表面形貌进行研究。同时,也对Sm3+与Ce3+之间Sm3+→Ce3+的能量转移机理进行了讨论。当Sm3+掺杂浓度(Sm3+/Ce3+为10%)时,其发射光谱强度能增加约3倍,并伴有明显的红移;合成的荧光粉体粒径大小在2～4μm时,有望与不同波长的蓝光LED组合,以期获得不同性质的白光LED。
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| 关 键 词： | 稀土荧光粉 YAG 共掺杂 能量转移 LED |
Study on preparation of YAG:(Ce3+-Sm3+) in co-precipitation method and their fluorescence spectrum |
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| LI Ya-nan
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WANG Yao
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XU Li-zhi
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XIAO Zun-hong.Study on preparation of YAG:(Ce3+-Sm3+) in co-precipitation method and their fluorescence spectrum[J].Journal of Guizhou Normal University(Natural Sciences),2013,31(1):107-110. |
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| Authors: | LI Ya-nan WANG Yao XU Li-zhi XIAO Zun-hong |
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| Institution: | *(School of Chemistry and Materials Science,Guizhou Normal University,Guiyang,Guizhou 550001,China) |
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| Abstract: | The YAG:(Ce3+-Sm3+) precursors were prepared by using the chemical co-precipitation method.Then they were synthesized by combustion method in nitrogen atmosphere.The Sm concentration,crystal phases and surface morphology of the samples were investigated.The energy transfer of Sm3+→Ce3+in YAG:(Ce3+-Sm3+) powders was also discussed.The fluorescence intensity of YAG: Ce3+ modified by Sm3+ which is 10% of Ce3+ can be enhanced by three times.The obvious red shift was also found at the same time.The red phosphor was sized 2~4μm which is useful for LED applications. |
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| Keywords: | rare earth phosphor YAG co-doping energy transfer LED |
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