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1. 郑州大学 化学与分子工程学院, 河南 郑州 450001
2. 周口师范学院 稀土功能材料及应用重点实验室, 河南 周口 466001
收稿日期:2013-05-09,
修回日期:2013-07-03,
纸质出版日期:2013-09-10
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岳丹, 李春阳, 马彩云, 刘春霞, 王振领. 空心半球形SrWO<sub>4</sub>和SrWO<sub>4</sub>:Tb<sup>3+</sup>/Eu<sup>3+</sup>球形颗粒的合成及发光性能[J]. 发光学报, 2013,34(9): 1155-1160
YUE Dan, LI Chun-yang, MA Cai-yun, LIU Chun-xia, WANG Zhen-ling. Synthesis and Luminescent Properties of Hollow Semi-sphere SrWO<sub>4</sub> and SrWO<sub>4</sub>:Tb<sup>3+</sup>/Eu<sup>3+</sup> Microsphere[J]. Chinese Journal of Luminescence, 2013,34(9): 1155-1160
岳丹, 李春阳, 马彩云, 刘春霞, 王振领. 空心半球形SrWO<sub>4</sub>和SrWO<sub>4</sub>:Tb<sup>3+</sup>/Eu<sup>3+</sup>球形颗粒的合成及发光性能[J]. 发光学报, 2013,34(9): 1155-1160 DOI: 10.3788/fgxb20133409.1155.
YUE Dan, LI Chun-yang, MA Cai-yun, LIU Chun-xia, WANG Zhen-ling. Synthesis and Luminescent Properties of Hollow Semi-sphere SrWO<sub>4</sub> and SrWO<sub>4</sub>:Tb<sup>3+</sup>/Eu<sup>3+</sup> Microsphere[J]. Chinese Journal of Luminescence, 2013,34(9): 1155-1160 DOI: 10.3788/fgxb20133409.1155.
采用水热法制备了空心半球形SrWO
4
及Tb
3+
、Eu
3+
掺杂的SrWO
4
球形颗粒
利用XRD、SEM、荧光光谱等研究其物相、形貌及发光性能。未掺杂的SrWO
4
具有空心半球形形貌
属四方晶系。SrWO
4
:Tb
3+
及SrWO
4
:Eu
3+
为球形颗粒
其相结构与未掺杂样品类似
形貌从空心半球形转变为球形颗粒。随着Tb
3+
掺杂浓度的增加
SrWO
4
:Tb
3+
的形貌从球状变成由纳米棒构成的花状;随着Eu
3+
掺杂浓度的增加
样品中出现了单斜相的Eu
2
WO
6
其形貌也发生了明显的变化。在紫外光激发下
SrWO
4
:Tb
3+
及SrWO
4
:Eu
3+
的发射光谱由钨酸根的宽带发射和掺杂离子的特征发射组成
分别表现出绿光和红光发射。Tb
3+
的最佳掺杂摩尔分数为3%
Eu
3+
的最佳掺杂摩尔分数为25%。
Hollow semi-sphere SrWO
4
and rare earth ions (Tb
3+
Eu
3+
) doped SrWO
4
microspheres were synthesized by hydrothermal treatment and characterized by XRD
SEM and photoluminescence (PL) spectrum. The results indicate that the undoped SrWO
4
has hollow semi-sphere morphology
with a tetragonal phase structure. The phase structure of SrWO
4
doped with Tb
3+
or Eu
3+
is similar to that of the undoped SrWO
4
while the morphology transforms from hollow semi-sphere to microsphere. With the increasing of Tb
3+
doping concentration
the morphology of SrWO
4
:Tb
3+
changes from microsphere to micro-flower composed of many nanorods. The increasing of Eu
3+
doping concentration leads to the presence of monoclinic phase Eu
2
WO
6
and the morphology change of SrWO
4
:Eu
3+
. Under the excitation of UV light
the emission spectra of SrWO
4
:Tb
3+
and SrWO
4
:Eu
3+
are mainly attributed to the characteristic emission of Tb
3+
(
5
D
4
-
7
F
J
transitions
J
=6
5
4
3) and Eu
3+
(
5
D
0
-
7
F
J
transitions
J
=1
2
3
4)
respectively. The optimal doping mole fractions are 3% for Tb
3+
and 25% for Eu
3+
in SrWO
4
.
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