A promising red-emitting phosphor Li2Eu4(MoO4)7 prepared by sol gel method

被引：15
作者：
Ru, Jingjing [1 ,2 ]
Ying, Shaoming [1 ]
Zheng, Wenxu [2 ]
Chen, Jianzhong [2 ]
机构：
[1] Ningde Normal Univ, Fujian Prov Univ Key Lab Green Energy & Environm, Fujian Prov Key Lab Featured Mat Biochem Ind, Dept Chem, Ningde 352100, Peoples R China
[2] Fuzhou Univ, Coll Chem, Fuzhou 350108, Fujian, Peoples R China
来源：
MATERIALS RESEARCH BULLETIN | 2016年 / 84卷
关键词：
Inorganic compounds; Sol-gel chemistry; Luminescence; X-ray diffraction; Phosphors; LUMINESCENT PROPERTIES; PHOTOLUMINESCENCE PROPERTIES; WHITE-LIGHT; CRYSTAL-STRUCTURE; DIODES; MOLYBDATES; NA; GD;
D O I：
10.1016/j.materresbull.2016.08.030
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A series of red light-emitting phosphors Li2Y4-x(MoO4)(7):xEu(3+) were synthesized by a sol-gel method. These samples were characterized by DSC-TGA, XRD, PL and FE-SEM analysis. The best dosage of citric acid is four times of metal ions. The optimal sintering temperature is 900 degrees C. The luminescence intensity of Li2Y4-x(MoO4)(7):xEu(3+) are strongest when the doping concentration of Eu3+ is 4 mol. These phosphors can be excitated by near-UV light of 395 nm and blue light of 465 nm effectively, and show strong red light at 615 nm, which is corresponding to D-5(0) -> F-7(2) transition of Eu3+ ion. The CIE chromaticity coordinates of Li2Eu4(MoO4)(7) phosphor is calculated to be (0.6497, 0.3499), and its lifetime is 0.38 ms. The results show that the phosphor is a promising red component candidate for near-UV and bule LED application. (C) 2016 Elsevier Ltd. All rights reserved.
引用
收藏
页码：468 / 473
页数：6
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