采用高温固相法制备纯相Y2( MoO4)3∶Dy3+荧光粉,并对其晶场及发光性质进行研究.晶场分析结果表明:Y3+格位晶场结构近似为对称性很低的C2,因此样品在近紫外区有很强f-f激发峰,适合于近紫外LED芯片.在387 nm激发下,主要发射峰为Dy3+的特征发射487 nm(蓝光,4F9/2→6H15/2)和574 nm(黄光,4F9/2→6H13/2).增大Dy3+掺杂浓度,黄光与蓝光的强度比值(Y/B)随之增大.387 nm激发下,不同Dy3+掺杂浓度荧光粉发射光的色坐标均在白光区域中.以上结果表明Y2( MoO4)3∶Dy3+是一种新型的适于近紫外LED芯片激发的白光荧光粉,发光性能良好.
参考文献
| [1] | 吴洪鹏,颜鲁婷,王鹏,司文捷.白光LED用钼酸盐体系红色荧光粉的研究进展[J].稀有金属材料与工程,2009(11):2065-2068. |
| [2] | 孙晓园,张家骅,张霞,刘慎薪,蒋大鹏,王笑军.新一代白光LED照明用一种适于近紫外光激发的单一白光荧光粉[J].发光学报,2005(03):404-406. |
| [3] | 严小松,李万万,刘霁,孙康.一种适用于近紫外光LED激发的单一相白光发光粉[J].发光学报,2010(01):39-43. |
| [4] | J. S. Kim;P. E. Jeon;J. C. Choi;H. L. Park;S. I. Mho;G. C. Kim .Warm-white-light emitting diode utilizing a single-phase full-color Ba_(3)MgSi_(2)O_(8):Eu~(2+), Mn~(2+) phosphor[J].Applied physics letters,2004(15):2931-2933. |
| [5] | Kim JS;Jeon PE;Park YH;Choi JC;Park HL;Kim GC;Kim TW .White-light generation through ultraviolet-emitting diode and white-emitting phosphor[J].Applied physics letters,2004(17):3696-3698. |
| [6] | 杨志平,刘玉峰,王利伟,余泉茂,熊志军,徐小岭.用于白光LED的单一基质白光荧光粉Ca2SiO3Cl2：Eu2+,Mn2+的发光性质[J].物理学报,2007(01):546-550. |
| [7] | XUE Yanna,XIAO Fen,ZHANG Qinyuan,JIANG Zhonghong.Synthesis and luminescent properties of polycrystalline Gd_2(MoO_4)_3:Dy~(3+) for white light-emitting diodes[J].稀土学报（英文版）,2009(05):753-757. |
| [8] | Wan J;Cheng L H;Sun J S et al.Energy Transfer and Colotimetric Properties of Eu3+/DY3+ Co-doped Gd2(MoO4)3 Phosphors[J].Journal of Alloys and Compounds,2010,496(1-2):331-334. |
| [9] | Cheng L H;Li X P;Sun J S et al.Investigation of the Luminescence Properties of Dy3 +-doped t-Gd2 (MoO4) 3 Phosphors[J].Physica B:Condensed Matter,2010,405(21):4457-4461. |
| [10] | Yue Tian;Xiaohui Qi;Xiaowei Wu .Luminescent Properties of Y2(MoO4)3:Eu~(3+) Red Phosphors with Flowerlike Shape Prepared via Coprecipitation Method[J].The journal of physical chemistry, C. Nanomaterials and interfaces,2009(24):10767-10772. |
| [11] | Shinde, K.N.;Dhoble, S.J.;Kumar, A. .Synthesis of novel Dy3+ activated phosphate phosphors for NUV excited LED[J].Journal of Luminescence: An Interdisciplinary Journal of Research on Excited State Processes in Condensed Matter,2011(5):931-937. |
| [12] | Yan B;Wang C;Zhao Y .Sol-gel Preparation and Luminescence of RE3BO6:Dy3 + (RE =La,Y,Gd) Microparticles with Hybrid Precursors[J].Journal of Materials Science:Materials in Electronics,2010,22(08):905-910. |
| [13] | 罗治涛,王育华,李叶洲.新型全色发光材料NaCaPO_4：Dy~（3+）制备及发光性能[J].高等学校化学学报,2010(01):26-29. |
| [14] | 李盼来,王志军,王颖,杨志平,郭庆林.LiBaBO3： Dy3+材料制备及发光特性研究[J].人工晶体学报,2009(04):884-887. |
| [15] | Meng Jian-Xin;YangChuang-Tao;ChenQing-Qing .PhotoluminescencecharacterizationofCe3+ and Dy3+ doped Li2CaGeO4 phosphors[J].Journal of Luminescence: An Interdisciplinary Journal of Research on Excited State Processes in Condensed Matter,2010(7):1320-1323. |
| [16] | Xiao-xiao Wang;Yu-lun Xian;Gang Wang;Jian-xin Shi;Qiang Su;Meng-lian Gong .Luminescence investigation of Eu~(3+)-Sm~(3+) co-doped Gd_(2-x-y)Eu-xSm_y(MoO_4)_3 phosphors as red phosphors for UV InGaN-based light-emitting diode[J].Optical materials,2007(4):521-526. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%