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采用传统高温固相方法制备了Gd0.97Nb1-xVxO4∶Eu0.03 (x=0.2,0.4,0.6,0.8和1)红色荧光粉.利用X射线粉末衍射对Gd0.97Nb1-xVxO4∶Eu0.03粉末进行了结构分析.研究了室温下该荧光粉的激发光谱和发射光谱特性.实验结果表明,这种荧光粉分别在315nm和395.5nm紫外光的激发下,Gd3+和Eu3+的掺杂浓度一定时,样品的发射光谱随着x值的增加红光发射(λ=619nm)强度逐渐变强,x=0.8时最强.研究了激活剂的浓度不变,而NbO43-离子和VO43-离子的浓度变化的条件下粉末的光谱性质.在激发光谱中,在200~320nm范围中出现了非常宽的谱带.这种荧光粉是一种可能应用于白光LED上的红色荧光材料.

参考文献

[1] 刘树杰,关荣锋.用于白光LED的掺杂Ce-YAG荧光玻璃的研制[J].电子元件与材料,2007(12):8-9,20.
[2] L. S. Rohwer;A. M. Brivastava .Development of Phosphors for LEDS[J].The Electrochemical Society interface,2003(2):36-39.
[3] Aierken Sidike;Rahman Abu Zayed Mohammad Saliqur et al.Photoluminescence spectra of thenardite Na2 SO4 activated with rare-earth ions,Ce3+,Sm3+,Tb3+,Dy3+ and Tm3+[J].Journal of Luminescence,2001,131:1840-1847.
[4] Lianhua Tian;Ping Yang;Hao Wu;Fengyue Li .Luminescence properties of Y2WO6:Eu3+ incorporated with Mo6+ or B3+ ions as red phosphor for light-emitting diode applications[J].Journal of Luminescence,2010,130:717-721.
[5] Chongfeng Guo;Hyun-Kyoung Yang;Zuoling Fu .A Potential Red-Emitting Phosphor BaGd_2(MoO_4)_4:Eu~(3+) for Near-UV White LED[J].Journal of the American Ceramic Society,2009(8):1713-1718.
[6] Min Ha Hwang;Young Jin Kim .Luminescent properties of Eu~(3+)-doped YTaO_4 powders[J].CERAMICS INTERNATIONAL,2008(4):1117-1120.
[7] Zhengliang Wang;Hongbin Liang;Jing Wang;Menglian Gong;Qiang Su .Red-light-emitting diodes fabricated by near-ultraviolet InGaN chips with molybdate phosphors[J].Applied physics letters,2006(7):071921-1-071921-3-0.
[8] G.Blasse .On the Eu Fluorescence of Mixed Metal Oxides.Ⅳ.The Photoluminescent Efficiency of Eu3+-Activated Oxides[J].Journal of Chemical Physics,1966,45(07):2356-2360.
[9] ZHAO Xiao-xia;XIE Yi-hua;WANG Xiao-jun;CHEN Bao-jiu LAI Hua-sheng DI Wei-hua .Luminescence Properties of (Y,Gd) (P,V)O4:Eu[J].Chinese Journal of Luminescence,2006,27(02):196-200.
[10] 张洪武,付晓燕,牛淑云,韩燕,孙公权,辛勤.纳米发光材料LnVO4:Eu(Ln=La,Gd,Y)的光谱研究[J].光谱学与光谱分析,2004(10):1164-1167.
[11] Wei Xiantao .Preparation and spectroscopic characterization of Yb3+ actived near-infrared down conversion phosphor and Gd2 O3:Bi3+,Eu3+ phosphor[D].合肥:中国科学技术大学,2010.
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