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1. 四川师范大学 化学与材料科学学院,四川 成都,610066
2. 攀枝花学院 资源与环境工程学院,四川 攀枝花,617000
3. 达州职业技术学院 基础教育部,四川 达州,635001
纸质出版日期:2015-2-3,
收稿日期:2014-11-4,
修回日期:2014-12-9,
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李涛, 梁鸿霞, 周婷等. 水热法制备的Li<sub>4-3x</sub>Eu<sub>x(MoO<sub>4</sub>)<sub>2</sub>微晶及其发光性能</sub>[J]. 发光学报, 2015,36(2): 186-191
LI Tao, LIANG Hong-xia, ZHOU Ting etc. Hydrothermal Synthesis and Luminescent Properties of Li<sub>4-3x</sub>Eu<sub>x(MoO<sub>4</sub>)<sub>2</sub> Microcrystallines</sub>[J]. Chinese Journal of Luminescence, 2015,36(2): 186-191
李涛, 梁鸿霞, 周婷等. 水热法制备的Li<sub>4-3x</sub>Eu<sub>x(MoO<sub>4</sub>)<sub>2</sub>微晶及其发光性能</sub>[J]. 发光学报, 2015,36(2): 186-191 DOI: 10.3788/fgxb20153602.0186.
LI Tao, LIANG Hong-xia, ZHOU Ting etc. Hydrothermal Synthesis and Luminescent Properties of Li<sub>4-3x</sub>Eu<sub>x(MoO<sub>4</sub>)<sub>2</sub> Microcrystallines</sub>[J]. Chinese Journal of Luminescence, 2015,36(2): 186-191 DOI: 10.3788/fgxb20153602.0186.
采用水热法制备了Li
4-3x
Eu
x(MoO
4
)
2
系列红色荧光粉.通过X射线衍射(XRD)、扫描电镜(SEM )和荧光分析(FL)对产物的微结构、形貌和发光性能进行表征分析.XRD分析表明
制备的Li
4-3x
Eu
x(MoO
4
)
2
微晶均为白钨矿四方结构.SEM结果显示:随着x的增大
Li
4-3x
Eu
x(MoO
4
)
2
微晶的晶粒尺寸相应减小
在0.2~0.5 m之间变化.荧光分析结果表明:源于Eu
3+
的
5
D
0
7
F
2
和
5
D
0
7
F
1
电荷转移的592 nm和614 nm的特征发射峰显现明显
后者的发射强度远远大于前者.随着x的增大
样品中Eu
3+
的两个特征发射峰的强度先增大后减小
在x=1.0时达到最大.
Li
4-3x
Eu
x(MoO
4
)
2
microcrystallines were synthesized by hydrothermal method. The crystal structure
surface morphology and room temperature photoluminescence properties of the microcrystallines were investigated by X-ray powder diffraction (XRD)
scanning electron micrograph (SEM) and fluorescence analysis (FL)
respectively. XRD results confirm that the obtained Li
4-3x
Eu
x(MoO
4
)
2
microcrystallines are all typical scheelite structure with tetragonal symmetry. SEM images show that the grain size of Li
4-3x
Eu
x(MoO
4
)
2
microcrystalline decreases with the increasing of x
varies in the range of 0.2-0.5 m. Fluorescence analysis results reveal that the two strong emission peaks attribute to the transitions of
5
D
0
7
F
2
and
5
D
0
7
F
1
of Eu
3+
ion (located at 592 nm and 614 nm ) appear obviously
and the emission intensity of the latter is much higher than that of the former. With the increasing of x
the emission intensity of the two characteristic emission peaks of Eu
3+
ion initially increase
reach the maximum at 1.0
and then decrease.
Li4-3xEux(MoO4)2微晶水热法制备发光性能
Li4-3xEux(MoO4)2 microcrystallineshydrothermal methodpreparationluminescence properties
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