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1. 河北大学 物理科学与技术学院,河北 保定,071002
2. 河北大学 工商学院, 河北 保定 071002
纸质出版日期:2010-9-21,
网络出版日期:2010-9-21,
收稿日期:2009-10-14,
修回日期:2009-12-27,
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李盼来, 刘海燕, 王志军, 杨志平, 李 旭, 杨艳民. Ce<sup>3+</sup>、Tb<sup>3+</sup>在SrZnP<sub>2</sub>O<sub>7</sub>材料中的发光及能量传递[J]. 发光学报, 2010,31(5): 719-723
LI Pan-lai, LIU Hai-yan, WANG Zhi-jun, YANG Zhi-ping, LI Xu, YANG Yan-min. Luminescence and Energy Transfer between Ce<sup>3+</sup> and Tb<sup>3+</sup> in SrZnP<sub>2</sub>O<sub>7</sub> Phosphor[J]. 发光学报, 2010,31(5): 719-723
李盼来, 刘海燕, 王志军, 杨志平, 李 旭, 杨艳民. Ce<sup>3+</sup>、Tb<sup>3+</sup>在SrZnP<sub>2</sub>O<sub>7</sub>材料中的发光及能量传递[J]. 发光学报, 2010,31(5): 719-723 DOI:
LI Pan-lai, LIU Hai-yan, WANG Zhi-jun, YANG Zhi-ping, LI Xu, YANG Yan-min. Luminescence and Energy Transfer between Ce<sup>3+</sup> and Tb<sup>3+</sup> in SrZnP<sub>2</sub>O<sub>7</sub> Phosphor[J]. 发光学报, 2010,31(5): 719-723 DOI:
采用高温固相法制备了Ce
3+
、Tb
3+
激活的SrZnP
2
O
7
材料
并研究了材料的发光性质。在290 nm紫外光激发下
SrZnP
2
O
7
∶ Ce
3+
材料的发射光谱为双峰宽谱
主峰位于329 nm。SrZnP
2
O
7
∶ Tb
3+
材料的发射光谱由420
443
491
545
587
625 nm六个峰组成
分别对应Tb
3+
的
5
D
3
7
F
5
、
5
D
3
7
F
4
、
5
D
4
7
F
6
、
5
D
4
7
F
5
、
5
D
4
7
F
4
和
5
D
4
7
F
3
特征发射;监测545 nm最强发射峰
所得激发光谱覆盖200~400 nm
主峰为380 nm。研究了Ce
3+
、Tb
3+
在SrZnP
2
O
7
材料中的能量传递过程
发现
Ce
3+
对Tb
3+
具有很强的敏化作用
提高了SrZnP
2
O
7
∶ Tb
3+
材料的发射强度
当Ce
3+
摩尔分数为3%时
SrZnP
2
O
7
∶ Tb
3+
材料的发射强度提高了近2倍。引入电荷补偿剂可提高SrZnP
2
O
7
∶ Tb
3+
材料的发射强度
其中以掺入Li
+
和Cl
-
时效果最明显。
SrZnP
2
O
7
∶ Tb
3+
SrZnP
2
O
7
∶ Ce
3+
and SrZnP
2
O
7
∶ Ce
3+
Tb
3+
phosphors were prepared by solid state reaction
and their luminescent characteristics were investigated. SrCO
3
(A.R.)
ZnO(A.R.)
NH
4
H
2
PO
4
(A.R.)
Li
2
CO
3
(A.R.)
Na
2
CO
3
(A.R.)
K
2
CO
3
(A.R.)
NH
4
Cl(A.R.)
Tb
4
O
7
(99.99%) and CeO
2
(99.99%) were used as starting materials
after these individual materials ground thoroughly in an agate mortar
the homogeneous mixture was heated at 900 ℃ for 3 h in reduce atmosphere
and these phosphors were obtained. The phase presents of the samples were characterized by powder X-ray diffraction (XRD) (D/max-rA
Cu K
40 kV
40 mA
=0.154 06 nm). The excitation and emission spectra of these phosphors were measured by a SHIMADZU RF-540 fluorescence spectrophotometer. SrZnP
2
O
7
∶ Ce
3+
shows a broad band at 329 nm. SrZnP
2
O
7
∶ Tb
3+
has six emission peaks at 420
443
491
545
587 and 625 nm which correspond to the
5
D
3
7
F
5
5
D
3
7
F
4
5
D
4
7
F
6
5
D
4
7
F
5
5
D
4
7
F
4
and
5
D
4
7
F
3
characteristic transitions of Tb
3+
respectively
at 380 nm excitation. Monitoring 545 nm peak
the excitation spectrum extends from 200 nm to 400 nm
and the peak locates at 380 nm. Energy transfer from Ce
3+
to Tb
3+
in SrZnP
2
O
7
∶ Ce
3+
Tb
3+
phosphor was investigated
and the emission intensity of SrZnP
2
O
7
∶ Tb
3+
can be enhanced by energy transfer from Ce
3+
to Tb
3+
. Under the conditions of charge compensator Li
+
Na
+
K
+
or Cl
-
incorporated in SrZnP
2
O
7
∶ Tb
3+
phosphor
the emission intensities of the phosphor are enhanced
too.
发光SrZnP2O7Ce3+Tb3+能量传递
luminescenceSrZnP2O7Ce3+Tb3+energy transfer
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