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通过改变基质阳离子半径使O2-→Eu3+电荷迁移带红移
Red shift of O2-→Eu3+ Charge Transfer Band by Changing The Host Cationic Radiu
- 发光学报 2017年38卷第11期 页码：1429-1435
- 作者机构：
1. 吉林建筑大学 材料科学与工程学院,吉林 长春,130118
2. 中国科学院长春应用化学研究所 稀土资源利用国家重点实验室, 吉林 长春 130022
- 作者简介：
- 基金信息：国家重点研发计划（2016YFB0701003）资助项目()
DOI：10.3788/fgxb20173811.1429
中图分类号： O482.31纸质出版日期：2017-11-5，
网络出版日期：2017-7-13，
收稿日期：2017-4-6，
修回日期：2017-6-6，
扫 描 看 全 文
王洪杰, 吕玲玲, 张粟等. 通过改变基质阳离子半径使O<sup>2-</sup>→Eu<sup>3+</sup>电荷迁移带红移[J]. 发光学报, 2017,38(11): 1429-1435
WANG Hong-jie, LYU Ling-ling, ZHANG Su etc. Red shift of O<sup>2-</sup>→Eu<sup>3+</sup> Charge Transfer Band by Changing The Host Cationic Radiu[J]. Chinese Journal of Luminescence, 2017,38(11): 1429-1435
王洪杰, 吕玲玲, 张粟等. 通过改变基质阳离子半径使O<sup>2-</sup>→Eu<sup>3+</sup>电荷迁移带红移[J]. 发光学报, 2017,38(11): 1429-1435 DOI： 10.3788/fgxb20173811.1429.
WANG Hong-jie, LYU Ling-ling, ZHANG Su etc. Red shift of O<sup>2-</sup>→Eu<sup>3+</sup> Charge Transfer Band by Changing The Host Cationic Radiu[J]. Chinese Journal of Luminescence, 2017,38(11): 1429-1435 DOI： 10.3788/fgxb20173811.1429.
摘要
采用高温固相法在1 300℃合成了
A
0.98
Nb
2
O
6
∶Eu
0.02
（
A
=Ca，Sr，Ba）荧光粉。X射线衍射（XRD）的结果表明烧结后得到的产物为纯相。利用稳态荧光光谱（PL）和漫反射光谱（DRS）对
A
0.98
Nb
2
O
6
∶Eu
0.02
（
A
=Ca，Sr，Ba）的发光性质进行了研究。结果表明
A
0.98
Nb
2
O
6
∶Eu
0.02
（
A
=Ca，Sr，Ba）荧光粉可以发射Eu
3+
的特征红光，光强度按CaNb
2
O
6
>
SrNb
2
O
6
>
BaNb
2
O
6
从大到小排列。激发光谱中可以观察到Eu
3+
离子的电荷转移跃迁（CT）和f-f跃迁吸收。其中CT吸收峰因基质阳离子半径的增大而发生了较大程度的红移，从270 nm红移到了330 nm。
Abstract
The phosphors with general molecular formula
A
0.98
Nb
2
O
6
:Eu
0.02
(
A
=Ca
Sr
Ba) were prepared by the high-temperature solid state reaction technique. X-ray diffraction (XRD) results reveal that the obtained products are pure phase. The luminescence properties of
A
0.98
Nb
2
O
6
:Eu
0.02
(
A
=Ca
Sr
Ba) were investigated by photoluminescence spectra(PL) and diffuse reflection spectra(DRS).
A
0.98
Nb
2
O
6
:Eu
0.02
(
A
=Ca
Sr
Ba) phosphors can exhibit the characteristic red emission of Eu
3+
and PL intensities of
A
0.98
Nb
2
O
6
:Eu
0.02
are in the order of CaNb
2
O
6
>
SrNb
2
O
6
>
BaNb
2
O
6
. The charge transfer transition(CT) and f-f transition absorption of Eu
3 +
can be observed in the excitation spectra. With the increase of the host cationic radius
the CT band shows large red shift from 270 to 330 nm.
关键词
ANb2O6荧光粉电荷迁移带Eu3+
Keywords
ANb2O6phosphorscharge transfer bandEu3+
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