| 白光LED用BaMgAl_(10)O_(17):Eu~(2+)Mn~(2+)蓝绿荧光粉 |
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| 引用本文： | 李可,沈常宇,沈天禛,周占春,贾祎鑫,杨翼.白光LED用BaMgAl_(10)O_(17):Eu~(2+)Mn~(2+)蓝绿荧光粉[J].中国计量学院学报,2011,22(1):64-67. |
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| 作者姓名： | 李可 沈常宇 沈天禛 周占春 贾祎鑫 杨翼 |
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| 作者单位： | 中国计量学院,光学与电子科技学院,浙江,杭州,310018 |
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| 摘 要： | 采用高温固相法制备出一种Eu2+,Mn2+共掺的蓝绿色荧光粉BaMgAl10O17:Eu2+,Mn2+(BAM:Eu2+,Mn2+),对其进行了X射线衍射分析和光谱特性的测试.研究表明,它的发射光谱为双峰结构,峰值分别位于455 nm和525 nm处.455 nm发射峰归结为BAM中部分取代Ba2+离子的Eu2+离子的5d→4f的跃迁辐射;525 nm的发射峰源于部分Eu2+能量传递给Mn2+离子,Mn2+的4T1→6A1的跃迁辐射.采用近紫外LED芯片与该荧光粉以及一种红色荧光粉Ca(La0.5Eu0.5)4Si3O13封装,在20 mA前向电流驱动下,获得了显色指数为88的白光LED.
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| 关 键 词： | 白光发光二极管 蓝绿荧光粉 高温固相法 |
BaMgAl10O17:Eu2+ Mn2+ blue-green phosphor for white light emitting diodes |
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| LI Ke,SHEN Chang-yu,SHEN Tian-zhen,ZHOU Zhan-chun,JIA Yi-xin,YANG Yi.BaMgAl10O17:Eu2+ Mn2+ blue-green phosphor for white light emitting diodes[J].Journal of China Jiliang University,2011,22(1):64-67. |
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| Authors: | LI Ke SHEN Chang-yu SHEN Tian-zhen ZHOU Zhan-chun JIA Yi-xin YANG Yi |
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| Affiliation: | LI Ke; SHEN Chang-yu; SHEN Tian-zhen; ZHOU Zhan-chun; JIA Yi-xin; YANG Yi(College of Optical and Electronic Technology; China Jiliang University; Hangzhou 310018; China); |
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| Abstract: | Series of BaMgAl10O17:Eu2+,Mn2+(BAM) Blue-green emitting phosphors were synthesized by solid-state reaction and X-ray powder diffraction(XRD) analysis confirmed the formation of BAM.The emission spectra of the co-doped BAM samples showed intense blue(455 nm) and green(525 nm) emission peaks.The emission peaks was at 455 nm originating from the transition 5d→4f of Eu2+ ions partially replaces Ba2+ sites in BAM,while the 525 nm emission was attributed to the energy transfer from Eu2+ to Mn2+.White LED was fab... |
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| Keywords: | white light emitting diodes blue-green emitting phosphrs high-temperature reaction |
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