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| 白光LED用新型Ce,Pr掺杂的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Ce,Pr掺杂的YAG单晶荧光材料的光谱性能研究[J].光子学报,2014,40(6):907-911. |
| 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 化学与材料工程学院,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 化学系,浙江 湖州313000) |
| 基金项目： | 国家自然科学基金(No.60708021)、上海基础研究重点项目(No.09JC1414900)、上海光技术专项 (No.09DZ1142002)、上海光技术专项 (No.10DZ1140400)、温州科技计划项目（No.G20090082）、浙江省科技厅重大科技专项国际科技合作项目（No.2008C14088）和浙江省自然科学基金重点基金(No.Z4110347)资助 |
| 摘 要： | 为了改善白光LED用荧光材料效率低、均匀性差、光衰大、寿命短及物化性能差等不足,本文采用单晶荧光材料取代荧光粉来制备白光LED,并对白光LED用新型YAG单晶荧光材料的制备和光谱性能进行了研究.采用提拉法生长了白光LED用Ce∶YAG及Pr,Ce∶YAG晶体,并通过吸收光谱,激发、发射光谱对晶体材料的光谱特性进行表征.研究表明,Ce∶YAG单晶荧光材料可以被发射波长460 nm左右的蓝光芯片有效激发,产生一个范围为480~650 nm宽峰发射.通过Pr3+,Ce3+离子共掺杂可以有效补偿Ce3+离子单掺杂YAG荧光材料发光中的红色发光成分. |
| 关 键 词： | 荧光材料 单晶 光谱 Ce∶YAG 共掺杂 白光LED |
| 收稿时间： | 2010-12-16 |
Spectra Characteristics of New Developed Ce,Pr doped YAG Phosphor for White-LED |
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| HUA Wei,XIANG Wei-dong,DONG Yong-jun,LIANGXiao-juan,YANG Fan,JIN Huai-dong.Spectra Characteristics of New Developed Ce,Pr doped YAG Phosphor for White-LED[J].Acta Photonica Sinica,2014,40(6):907-911. | |
| Authors: | HUA Wei XIANG Wei-dong DONG Yong-jun LIANGXiao-juan YANG Fan JIN Huai-dong |
| Institution: | （1 College of Chemistry and Materials Engineering,Wenzhou University,Wenzhou,Zhejiang 325035 China） (2 Shanghai Institute of Optics and Fine Mechanics,Chinese Academy of Sciences,Shanghai 201800,China) (3 Department of Chemistry,Huzhou Teachers College,Huzhou,Zhejiang 313000,China) |
| Abstract: | In order to improve the shortages of the phosphor for white LED,including low efficiency,poor uniformity,large light decline,short life,and poor physical and chemical characteristics,etc.,single crystals phosphor was studied as a substitute.Growth and spectra characteristics of Ce doped and Ce,Pr-codoped YAG single crystals phosphor used for white LED were investigated.Ce∶YAG and Pr,Ce∶YAG single crystals were grown by Czochralski method,and its luminescence properties were studied by means of absorption,emission and excitation spectra.Date analysis reveals that broad emission band ranging from 480~650nm,is produced with blue light excitation.It has been found that red light component of Ce∶YAG phosphor,which is important to improve the color rendering index,can be efficiently compensated by Pr-codoping. |
| Keywords: | Phosphor Single crystal Spectrum Ce∶YAG Co-doped White LED |
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