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| 白光LED用新型Eu或Gd共掺杂的Ce:YAG单晶荧光材料的光谱性能研究 | |
| 引用本文： | 华 伟,向卫东,董永军,梁晓娟,杨 帆,金怀东,梁 续,吕春燕. 白光LED用新型Eu或Gd共掺杂的Ce:YAG单晶荧光材料的光谱性能研究[J]. 稀有金属材料与工程, 2012, 41(8): 1371-1375 |
| 作者姓名： | 华 伟 向卫东 董永军 梁晓娟 杨 帆 金怀东 梁 续 吕春燕 |
| 作者单位： | 1. 温州大学,浙江温州,325035 2. 中国科学院上海光学精密机械研究所,上海,201800 3. 湖州师范学院,浙江湖州,313000 |
| 基金项目： | 国家自然科学基金 (60708021)；上海基础研究重点项目 (09JC1414900)；上海光技术专项 (09DZ1142002, 10DZ1140400)；温州科技计划项目 (G20090082)；浙江省科技厅重大科技专项国际科技合作项目 (2008C14088) |
| 摘 要： | 开展了白光LED用新型YAG单晶荧光材料的制备和光谱性能研究,采用提拉法生长Eu,Ce:YAG及Gd,Ce:YAG晶体,并通过吸收光谱,激发、发射光谱及电光性能等对晶体材料的光谱特性进行表征。结果表明,Eu或Gd共掺杂的Ce:YAG单晶荧光材料均可以被波长460nm左右的蓝光芯片有效激发,产生一个范围为480～650nm的宽峰发射。Eu3+或Gd3+共掺杂会对Ce3+离子的发光产生影响:Eu3+离子的掺杂,会对Ce3+离子的发光产生淬灭效应;而Gd3+离子取代基质Y3+离子可以使Ce3+离子的发射峰发生红移。 |
| 关 键 词： | 荧光材料 Ce:YAG单晶 共掺杂 光谱 白光LED |
| 收稿时间： | 2011-08-15 |
Study on Spectra Characteristics of Newly-Developed Eu or Gd Co-doped Ce:YAG Phosphor for White-LED |
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| Hua Wei , Xiang Weidong , Dong Yongjun , Liang Xiaojuan , Yang Fan , Jin Huaidong , Liang Xu , Lü Chunyan. Study on Spectra Characteristics of Newly-Developed Eu or Gd Co-doped Ce:YAG Phosphor for White-LED[J]. Rare Metal Materials and Engineering, 2012, 41(8): 1371-1375 | |
| Authors: | Hua Wei Xiang Weidong Dong Yongjun Liang Xiaojuan Yang Fan Jin Huaidong Liang Xu Lü Chunyan |
| Affiliation: | Wenzhou University, Wenzhou 325035, China |
| Abstract: | The growth and spectra characteristics of Eu,Ce and Gd,Ce co-doped YAG single crystals phosphor used for white LED were investigated. Eu,Ce:YAG and Gd,Ce:YAG single crystals were grown by Czochralski method, and their luminescence properties were studied in terms of absorption, emission and excitation spectra. Date analysis reveals that a broad emission band range from 480-650 nm can be produced with blue light excitation. Eu3+ or Gd3+ co-doped ions could affect the emission properties of Ce:YAG crystal: Eu3+ ions co-doping will have the Ce3+ ions luminous quenching effect. On the contrary, Gd3+ ions, which is substituted at the Y site, would shift the emission spectra of Ce:YAG crystal to the red spectra |
| Keywords: | phosphor Ce:YAG single crystal co-doped spectra white LED |
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