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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
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,
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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>&rarr;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>&rarr;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>&rarr;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>&rarr;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.
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。
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.
ANb2O6荧光粉电荷迁移带Eu3+
ANb2O6phosphorscharge transfer bandEu3+
杨志平, 梁晓双, 赵引红, 等. 橙红色荧光粉Ca3Y2(Si3O9)2:Sm3+的制备及发光性能的表征[J]. 光子学报, 2014, 43(3):0316002. YANG Z P, LIANG X S, ZHAO Y H, et al.. Preparation and luminescence properties of reddish-orange phosphors Ca3Y2(Si3O9)2:Sm3+[J]. Acta Photon. Sinica, 2014, 43(3):0316002. (in Chinese)
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HSIAO Y J, FANG T H, JI L W. Photoluminescence and preparation of ZnNb2O6 doped with Eu3+ and Tm3+ nanocrystals for solar cell[J]. Mater. Chem. Phys., 2011, 130(3):1187-1190.
FANG T H, HSIAO Y J. Photoluminescent characterization of KNbO3:Eu3+[J]. Mater. Chem. Phys., 2006, 100(2):418-422.
CAVALLI E, BELLETTI A, MAHIOU R, et al.. Luminescence properties of Ba2NaNb5O15 crystals activated with Sm3+, Eu3+, Tb3+ or Dy3+ ions[J]. J. Lumin., 2010, 130(4):733-736.
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