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白色荧光粉NaGd（MoO4）2：Dy^3＋,Eu^3＋的水热合成及发光性能

ISSN号：0251-0790
期刊名称：《高等学校化学学报》
时间：0
分类：O614.33[理学—无机化学;理学—化学]
作者机构：[1]长春理工大学化学与环境工程学院应用化学与纳米技术吉林省高校重点实验室,长春130022
相关基金：国家自然科学基金（批准号：51072026,50972020）; 吉林省科技发展计划项目（批准号：20090528）资助

作者：姜营营[1], 刘桂霞[1], 王进贤[1], 董相廷[1], 于文生[1]

关键词： NaGd(MoO4)2:Dy3+, Eu3+, 发光材料, 白光, 水热合成, NaGd （ MoO4 ） 2· DY^3＋, Eu^3＋ , Luminescent material , White light , Hydrothermal preparation

中文摘要：

采用谷氨酸辅助水热法合成了八面体形NaGd（MoO4）2：Dy^3＋,Eu^3＋白色荧光粉.X射线衍射结果表明,合成的样品为四方晶系的NaGd（MoO4）2纯相.扫描电子显微镜照片显示所制备的粒子为八面体形,各边长约为2μm.荧光光谱结果表明,在NaGd（MoO4）2：4%Dy^3＋,yEu^3＋（y=0,0.5%,0.6%,0.7%,0.8%,0.9%,1.0%）样品中,随着Eu^3＋掺入量的增加,Dy^3＋的发射峰逐渐减弱,而Eu3＋的发射峰逐渐增强,说明Dy3＋-Eu3＋之间存在能量传递.通过色坐标图可知,当Eu3＋掺杂量y=0.9%时,荧光粉的色坐标（0.338,0.281）与标准的白光色坐标（0.33,0.33）接近,表明NaGd（MoO4）2：4%Dy^3＋,0.9%Eu^3＋是很好的近紫外光激发下的白色荧光粉.

英文摘要：

Dy, Eu co-doped NaGd（MOO4） 2 white-light phosphors were prepared by a simple glutamic acid- assisted hydrothermal method. X-Ray diffraction （XRD） patterns show that the samples are tetragonal phase NaGd（ MoO4 ）2- Scanning electron microscopy（SEM） images show that the as-prepared particles have an oc- tagonal shape with each side length of about 2 ~m. In the fluorescence spectra of NaGd （ MoO4 ） 2 ： Dy, Eu, it is found that the emission intensity of Eu3＋ increased and the emission intensity of Dy3＋ decreased with increa- sing the amount of Eu3＋ and maintaining the concentration of Dy3＋. The energy transmission of Dy3＋-Eu3＋ is ob- served. From Commission Internationale de L＇ Eclairage （CIE） chromaticity diagram, it is noted that white light can be achieved in NaGd（ MoO4 ）2 ： 4% Dy3＋ ,0. 9% Eu3＋ phosphor, the CIE color coordinates （0. 338, 0. 281 ） are near to the standard color coordinates（0.33, 0.33）.

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