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1. 发光学及应用国家重点实验室 中国科学院长春光学精密机械与物理研究所,吉林 长春,130033
2. 长春师范大学 物理学院,吉林 长春,130032
3. 哈尔滨工业大学 物理系,黑龙江 哈尔滨,150001
4. 牡丹江师范学院 理学院,黑龙江 牡丹江,157012
纸质出版日期:2016-2-10,
收稿日期:2015-10-21,
修回日期:2015-11-24,
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孙晓园, 王玉晓, 祁金刚等. <em>M</em><sub>2</sub>Eu<sub><em>x</em></sub><em>Ln</em><sub>1-<em>x</em></sub>AlO<sub>5</sub>(<em>M</em>=Ca, Sr, Ba, <em>Ln</em>=La, Gd, Lu)红色荧光粉发光性质的研究[J]. 发光学报, 2016,37(2): 138-143
SUN Xiao-yuan, WANG Yu-xiao, QI Jin-gang etc. Photoluminescence Properties of <em>M</em><sub>2</sub>Eu<sub><em>x</em></sub><em>Ln</em><sub>1-<em>x</em></sub>AlO<sub>5</sub>(<em>M</em>=Ca, Sr, Ba, <em>Ln</em>=La, Gd, Lu) Red Phosphor[J]. Chinese Journal of Luminescence, 2016,37(2): 138-143
孙晓园, 王玉晓, 祁金刚等. <em>M</em><sub>2</sub>Eu<sub><em>x</em></sub><em>Ln</em><sub>1-<em>x</em></sub>AlO<sub>5</sub>(<em>M</em>=Ca, Sr, Ba, <em>Ln</em>=La, Gd, Lu)红色荧光粉发光性质的研究[J]. 发光学报, 2016,37(2): 138-143 DOI: 10.3788/fgxb20163702.0138.
SUN Xiao-yuan, WANG Yu-xiao, QI Jin-gang etc. Photoluminescence Properties of <em>M</em><sub>2</sub>Eu<sub><em>x</em></sub><em>Ln</em><sub>1-<em>x</em></sub>AlO<sub>5</sub>(<em>M</em>=Ca, Sr, Ba, <em>Ln</em>=La, Gd, Lu) Red Phosphor[J]. Chinese Journal of Luminescence, 2016,37(2): 138-143 DOI: 10.3788/fgxb20163702.0138.
用高温固相反应法合成了
M
2
Eu
x
Ln
1-
x
AlO
5
(
M
=Ca
Sr
Ba
Ln
=La
Lu
Gd)荧光粉
研究了荧光粉的发光性质。在紫外光和近紫外光激发下
样品的发射光谱由Eu
3+
的
5
D
0
7
F
J
(
J
=0
1
2
3
4) 特征发射组成。其中Eu
3+
离子位于590 nm附近的
5
D
0
7
F
1
和位于620 nm附近的
5
D
0
7
F
2
跃迁发射的强度最强。荧光粉的激发光谱都是由O
2-
-Eu
3+
电荷迁移带和Eu
3+
的f-f 跃迁构成的。
M
2
Eu
x
La
1-
x
AlO
5
(
M
=Ca
Sr
Ba)的O
2-
-Eu
3+
的电荷迁移带的峰位按Ca、Sr、Ba顺序向长波方向移动。研究了用La、Gd和Lu替代Sr
2
Eu
x
Ln
1-
x
AlO
5
中
Ln
的位置对样品发光的影响。给出了Eu
3+
浓度对发光强度的影响。分析了Sr
2
Eu
x
La
1-
x
AlO
5
和Sr
2
Eu
x
Gd
1-
x
-AlO
5
的荧光寿命。
The red emitting phosphors
M
2
Eu
x
Ln
1-
x
AlO
5
(
M
=Ca
Sr
Ba
Ln
=La
Lu
Gd) were synthesized through the solid state reaction technique. The photoluminescence properties were described. Upon excitation with UV and near UV light excitation
the photoluminescence emission spectra could be assigned to the transitions of Eu
3+
from the initial state
5
D
0
to the final states
7
F
J
(J=
0
1
2
3
4). The two strong emissions peaked at 590 nm and 620 nm
which arose from the
5
D
0
-
7
F
1
and
5
D
0
-
7
F
2
transitions of Eu
3+
respectively. The photoluminescence excitation spectra show abroad O
2-
-Eu
3+
charge-transfer band and f-f transitions. O
2-
-Eu
3+
charge-transfer bands of
M
2
Eu
x
La
1-
x
AlO
5
(
M
= Ca
Sr
Ba) shift to the longer wavelength in order of Ca
Sr
Ba. The replacement of
Ln
in Sr
2
Eu
x
Ln
1-
x
AlO
5
by La
Gd and Lu was studied. The dependence of the integrated luminescence intensities on Eu
3+
concentration was presented. The lifetimes of Sr
2
Eu
x
La
1-
x
-AlO
5
and Sr
2
Eu
x
Gd
1-
x
AlO
5
were analyzed.
荧光粉发光白光LED
phosphorphotoluminescencewhite light emitting diode
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SUN X Y, HAO Z D, LI C J, et al.. Enhanced orange-red emission by using Mo codoped in Ba2CaWO6:Eu3+,Li+ phosphor under near UV excitation [J]. J. Lumin., 2013, 134:191-194.
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SHANG C Y, WANG X Q, KANG H, et al.. Charge transfer energy for Y2O3:Eu3+ nanophosphor [J]. J. Appl. Phys., 2011, 109(10):104309.
JANSSENS S, WILLIAMS G V M, CLARKE D. Systematic study of sensitized LaF3:Eu3+ nanoparticles [J]. J. Appl. Phys., 2011, 109(2):023506.
SUN X Y, LI C J, HE X G, et al.. Preparation and luminescence properties of Sr2EuxLa1-xAlO5 phosphor [J]. J. Lumin., 2015, 157:197-200.
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