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延边大学理学院 物理系, 吉林 延吉,133002
纸质出版日期:2018-9-5,
网络出版日期:2018-5-3,
收稿日期:2018-1-22,
修回日期:2018-4-20,
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于潘龙, 田莲花,. Mn<sup>2+</sup>离子掺杂的NaTaOGeO<sub>4</sub>:Tb<sup>3+</sup>的发光性能[J]. 发光学报, 2018,39(9): 1200-1206
YU Pan-long, TIAN Lian-hua,. Photoluminescence Properties and Color Tunable of NaTaOGeO<sub>4</sub>: Tb<sup>3+</sup> Co-doped with Mn<sup>2+</sup> Ion[J]. Chinese Journal of Luminescence, 2018,39(9): 1200-1206
于潘龙, 田莲花,. Mn<sup>2+</sup>离子掺杂的NaTaOGeO<sub>4</sub>:Tb<sup>3+</sup>的发光性能[J]. 发光学报, 2018,39(9): 1200-1206 DOI: 10.3788/fgxb20183909.1200.
YU Pan-long, TIAN Lian-hua,. Photoluminescence Properties and Color Tunable of NaTaOGeO<sub>4</sub>: Tb<sup>3+</sup> Co-doped with Mn<sup>2+</sup> Ion[J]. Chinese Journal of Luminescence, 2018,39(9): 1200-1206 DOI: 10.3788/fgxb20183909.1200.
采用高温固相法制备了颜色可调的NaTaOGeO
4
∶Tb
3+
,Mn
2+
荧光粉,并研究了其发光特性以及能量传递机理。在244 nm激发下,NaTaOGeO
4
∶Tb
3+
的发射光谱的发射峰分别位于380,413,436,492,544 nm,分别属于Tb
3+
的
5
D
3
7
F
J
和
5
D
4
7
F
J
(
J
=6,5,4)能级跃迁,为蓝光和绿光发射。在280 nm波长激发下,在492 nm和544 nm处有较强的发射峰,分别属于Tb
3+
的
5
D
4
7
F
6
、
5
D
4
7
F
5
能级跃迁,为绿光发射。在248 nm波长激发下,NaTaOGeO
4
∶Mn
2+
的发射光谱由位于576 nm处的宽带组成,属于Mn
2+
的
4
T
1
6
A
1
能级跃迁。当在NaTaOGeO
4
∶Tb
3+
荧光粉中共掺杂Mn
2+
时,可以同时观察到Mn
2+
和Tb
3+
的发射峰,通过改变浓度掺杂比,可以得到颜色可调控的荧光粉。
The photoluminescence properties and energy transfer mechanism of a color tunable phosphor NaTaOGeO
4
:Tb
3+
Mn
2+
were investigated in this paper. NaTaOGeO
4
:Tb
3+
Mn
2+
powder was synthesized successfully by solid state reaction method. The phase purity was checked using X-ray powder diffractometry(XRD). The excitation and emission spectra were recorded to elucidate the photoluminescence properties of NaTaOGeO
4
:Tb
3+
Mn
2+
. Furthermore
the fluorescence lifetime measurements were performed. The emission spectrum of NaTaOGeO
4
:Tb
3+
excited by 244 nm shows blue emissions at 380
413
436
492
544 nm
which are attributed to
5
D
3
7
F
J
and
5
D
4
7
F
J
(
J
=6
5
4) transition of Tb
3+
respectively. The emission spectrum of NaTaOGeO
4
:Tb
3+
excited by 277 nm shows green emissions at 492 nm and 544 nm
which are attributed to
5
D
4
7
F
6
and
5
D
4
7
F
5
transition of Tb
3+
. The emission spectrum of NaTaOGeO
4
:Mn
2+
shows orange-red emissions at 576 nm
owing to
4
T
1
6
A
1
transition of Mn
2+
. With varying the ratio of the concentration of Mn
2+
and Tb
3+
a color tunable phosphor NaTaOGeO
4
:Tb
3+
Mn
2+
can be obtained.
稀土离子过渡金属荧光粉颜色可调发光特性
rare earth ionstransition metalphosphorscolor tunableluminescence
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