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Hydrothermal Preparation and Multi-color Luminescence Properties of Ca0.8La0.2-x-yMoO4：xTb3+, yEu3+
- Chinese Journal of Luminescence Vol. 34, Issue 10, Pages: 1288-1294(2013)
- 作者机构：
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, 吉林 长春 130022
- 作者简介：
- 基金信息：
DOI：10.3788/fgxb20133410.1288
CLC： O482.31Received：09 May 2013，
Revised：01 August 2013，
Published：10 October 2013
- 稿件说明：
移动端阅览
韩丽, 宋超, 刘桂霞, 王进贤, 董相廷. Ca<sub>0.8</sub>La<sub>0.2-<em>x-y</em></sub>MoO<sub>4</sub>：<em>x</em>Tb<sup>3+</sup>, <em>y</em>Eu<sup>3+</sup>荧光材料的水热合成及多色发光性质[J]. 发光学报, 2013,34(10): 1288-1294
HAN Li, SONG Chao, LIU Gui-xia, WANG Jin-xian, DONG Xiang-ting. Hydrothermal Preparation and Multi-color Luminescence Properties of Ca<sub>0.8</sub>La<sub>0.2-<em>x-y</em></sub>MoO<sub>4</sub>：<em>x</em>Tb<sup>3+</sup>, <em>y</em>Eu<sup>3+</sup>[J]. Chinese Journal of Luminescence, 2013,34(10): 1288-1294
韩丽, 宋超, 刘桂霞, 王进贤, 董相廷. Ca<sub>0.8</sub>La<sub>0.2-<em>x-y</em></sub>MoO<sub>4</sub>：<em>x</em>Tb<sup>3+</sup>, <em>y</em>Eu<sup>3+</sup>荧光材料的水热合成及多色发光性质[J]. 发光学报, 2013,34(10): 1288-1294 DOI： 10.3788/fgxb20133410.1288.
HAN Li, SONG Chao, LIU Gui-xia, WANG Jin-xian, DONG Xiang-ting. Hydrothermal Preparation and Multi-color Luminescence Properties of Ca<sub>0.8</sub>La<sub>0.2-<em>x-y</em></sub>MoO<sub>4</sub>：<em>x</em>Tb<sup>3+</sup>, <em>y</em>Eu<sup>3+</sup>[J]. Chinese Journal of Luminescence, 2013,34(10): 1288-1294 DOI： 10.3788/fgxb20133410.1288.
摘要
采用水热法制备了Ca
0.8
La
0.2-
x-y
MoO
4
:
x
Tb
3+
y
Eu
3+
荧光材料
并对其结构和发光性能进行了研究。X射线衍射(XRD) 分析表明
合成的样品为四方晶系的CaMoO
4
白钨矿结构
稀土离子La
3+
、Eu
3+
、Tb
3+
的引入不会改变主晶格的结构。荧光光谱表明
与CaMoO
4
:Eu
3+
荧光粉相比
基质中掺杂La 后的Ca
0.8
La
0.15
MoO
4
:0.05Eu
3+
样品的616 nm (
5
D
0
7
F
2
) 处的特征发射峰明显增强。在285 nm紫外光激发下
Ca
0.8
La
0.16-
y
MoO
4
:0.04Tb
3+
y
Eu
3+
(
y
=0.01
0.03
0.05
0.07) 系列样品在545 nm 和616 nm 处出现的发射峰
分别对应于Tb
3+
的
5
D
4
7
F
5
跃迁和Eu
3+
的
5
D
0
7
F
2
跃迁
并且随着Eu
3+
掺杂量的增加
Tb
3+
的发射峰逐渐减弱
Eu
3+
的发射峰逐渐增强
表明该荧光材料中存在着由Tb
3+
到Eu
3+
能量传递。随着Ca
0.8
La
0.16-
y
MoO
4
:0.04Tb
3+
y
Eu
3+
(
y
=0.01
0.03
0.05
0.07) 系列样品中激活剂Eu
3+
掺杂量的增加
荧光粉实现了从绿色黄绿黄色红色的颜色可调。
Abstract
Ca
0.8
La
0.2-
x-y
MoO
4
:
x
Tb
3+
y
Eu
3+
fluorescent materials were prepared by hydrothermal method. The crystal structure and luminescence properties were studied. X-ray diffraction (XRD) patterns confirm that the crystal structure of the samples matches well with the tetragonal CaMoO
4
. The introduction of rare earth ions La
3+
Eu
3+
and Tb
3+
doesn't change the structure of the host lattice. Comparing with CaMoO
4
:Eu
3+
phosphors
the characteristic emission peak in 616 nm (
5
D
0
7
F
2
) of Ca
0.8
La
0.15
MoO
4
:0.05Eu
3+
is enhanced obviously. The emission spectra of Ca
0.8
La
0.16-
y
MoO
4
:0.04Tb
3+
y
Eu
3+
(
y
=0.01
0.03
0.05
0.07) exhibit two emission peaks at 545 nm and 616 nm under 285 nm UV excitation
corresponding to the transition of
5
D
4
7
F
5
of Tb
3+
and
5
D
0
7
F
2
of Eu
3+
. It is found that the emission intensity of Eu
3+
increases and the emission intensity of Tb
3+
decreases with the increasing of Eu
3+
content
indicating that there is energy transfer of Tb
3+
Eu
3+
. Moreover
the luminescence colors of the Ca
0.8
La
0.16-
y
MoO
4
:0.04Tb
3+
y
Eu
3+
(
y
=0.01
0.03
0.05
0.07) samples can be tuned from green
green-yellow and yellow to red by simply adjusting the relative doping concentrations of the activator ion of Eu
3+
under a single wavelength excitation.
关键词
Keywords
references
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