| YAG:Ce蓝光转换材料的合成和发光性质研究 |
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| 引用本文： | 姚光庆,段洁菲,任敏,于海东,林建华.YAG:Ce蓝光转换材料的合成和发光性质研究[J].发光学报,2001,22(Z1):21-23. |
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| 作者姓名： | 姚光庆 段洁菲 任敏 于海东 林建华 |
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| 作者单位： | 北京大学化学学院, |
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| 基金项目： | 国家高技术研究发展计划(863计划)，， |
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| 摘 要： | 铈激活的钇铝石榴石(YAG:Ce)由高温固相反应制备.样品证明为纯的的石榴石物相.YAG:Ce的激发光谱为双峰结构,主要激发峰在460nm,与GaN的蓝光发射匹配.YAG:Ce的发射光谱为一宽带,波长范围从蓝绿到红,主峰波长为540nm,能与GaN的蓝光组合形成高亮度白光.YAG:Ce在漫反射光谱中的的两个吸收峰与YAG:Ce的激发峰相吻合,进一步证明了铈激活的YAG对GaN蓝光的有效吸收.YAG:Ce有很高的发光强度和高达89%的量子效率.
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| 关 键 词： | YAG:Ce 蓝光转换材料 白光 |
| 文章编号： | 1000-7032(2001)增-0021-03 |
| 修稿时间： | 2001年3月17日 |
Preparation and Luminescence of Blue Light Conversion Material YAG: Ce |
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| Yao Guangqing,DUAN Jiefei,REN Min,YU Haidong,Lin Jianhua.Preparation and Luminescence of Blue Light Conversion Material YAG: Ce[J].Chinese Journal of Luminescence,2001,22(Z1):21-23. |
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| Authors: | Yao Guangqing DUAN Jiefei REN Min YU Haidong Lin Jianhua |
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| Abstract: | Yttrium aluminum garnet doped by cerium (YAG: Ce), is prepared by high temperature solid reaction. Its absorption band has two peaks. The major one is around 460nm, which matches the blue emission of GaN LED very well. Its emission band is wide, from blue to red.The emission peak is at 540nm, which can combine the blue light of GaN LED to yield bright white light. The wavelength of two peaks of the diffusion spectrum is similar to that of the excitation spectrum. That indicates the YAG: Ce has effective absorption for blue light of GaN.YAG: Ce phosphor has strong emission intensity, and the quantum efficecy is 89%. |
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