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1. 成都理工大学 材料科学技术研究所,四川 成都,610059
2. 四川新力光源有限公司,四川 成都,611731
纸质出版日期:2012-11-10,
收稿日期:2012-6-29,
修回日期:2012-9-3,
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张莉, 邱克辉, 鲁雪光, 赵昆, 尚进. Ba<sup>2+</sup>掺杂对Sr<sub>3</sub>Al<sub>2</sub>O<sub>6</sub>:Eu<sup>2+</sup>红色荧光粉发光性能的影响[J]. 发光学报, 2012,(11): 1219-1223
ZHANG Li, QIU Ke-hui, LU Xue-guang, ZHAO Kun, SHANG Jin. Effect of Doping Ba<sup>2+</sup> Ions on Luminescence Properties of Sr<sub>3</sub>Al<sub>2</sub>O<sub>6</sub>:Eu<sup>2+</sup> Red Phosphor[J]. Chinese Journal of Luminescence, 2012,(11): 1219-1223
张莉, 邱克辉, 鲁雪光, 赵昆, 尚进. Ba<sup>2+</sup>掺杂对Sr<sub>3</sub>Al<sub>2</sub>O<sub>6</sub>:Eu<sup>2+</sup>红色荧光粉发光性能的影响[J]. 发光学报, 2012,(11): 1219-1223 DOI: 10.3788/fgxb20123311.1219.
ZHANG Li, QIU Ke-hui, LU Xue-guang, ZHAO Kun, SHANG Jin. Effect of Doping Ba<sup>2+</sup> Ions on Luminescence Properties of Sr<sub>3</sub>Al<sub>2</sub>O<sub>6</sub>:Eu<sup>2+</sup> Red Phosphor[J]. Chinese Journal of Luminescence, 2012,(11): 1219-1223 DOI: 10.3788/fgxb20123311.1219.
采用高温固相法合成了(Sr
1-
x-y
Ba
x
)
3
Al
2
O
6
:3
y
Eu
2+
红色荧光材料
通过XRD、荧光光谱和热稳定性测试分析
分别研究了Eu
2+
、Ba
2+
掺杂对样品的晶体结构、发光性能和热稳定性的影响。XRD测试结果表明
在1 200℃保温3 h条件下合成了具有立方晶体结构、空间群为
Pa
3的Sr
3
Al
2
O
6
纯相样品
Eu
2+
、Ba
2+
的掺入并没有改变其基质晶格的结构类型。荧光光谱分析表明
Eu
2+
的摩尔分数为4%时
(Sr
0.98-
y
Ba
0.02
)
3
Al
2
O
6
:3
y
Eu
2+
样品的发射峰最强
Ba
2+
的掺入使样品的发射峰发生红移而发射强度降低
且随Ba
2+
浓度的增加红移越发明显。此外
Ba
2+
的掺杂提高了Sr
3
Al
2
O
6
:Eu
2+
样品的热稳定性。
Red-emitting phosphors (Sr
1-
x-y
Ba
x
)
3
Al
2
O
6
:3
y
Eu
2+
were synthesized by a solid-state reaction in a reducing atmosphere. X-ray diffraction and fluorescence spectrophotometer were used to investigate the effects of doping Eu
2+
and Ba
2+
ions on the crystal structure
luminescence properties and thermal stability of the samples. The XRD results indicate that the samples prepared at 1 200℃ for 3 h generate a single Sr
3
Al
2
O
6
phase with cubic system and
Pa
3 space group. The crystal structure type of the host has not been changed by doping Eu
2+
and Ba
2+
ions. The emission spectra illustrate that the emission intensity of (Sr
0.98-
y
Ba
0.02
)
3
Al
2
O
6
:3
y
Eu
2+
reaches the maximum when the mole fraction of Eu
2+
is 4%. Furthermore
the emission peaks of (Sr
1-
x-y
Ba
x
)
3
Al
2
O
6
:3
y
Eu
2+
show a red shift and decrease of emission intensity compared with Sr
3(1-
y
)
Al
2
O
6
:3
y
Eu
2+
under the excitation of 460 nm. Both of them have broad emission bands due to the 4f
6
5d
1
→4f
7
transition of the Eu
2+
ions. Finally
the thermal stability of Sr
3
Al
2
O
6
:Eu
2+
is enhanced by doping Ba
2+
ions.
(Sr1-xBax)3Al2O6高温固相法红色荧光粉发光性能热猝灭
(Sr1-xBax)3Al2O6solid-state reactionred phosphorluminescence propertiesthermal quenching
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Chakomakos B C, Lager G A, Fernandez-Baca J A. Refinement of the structures of Sr3Al2O6 and the hydrogarnet Sr3Al2-(O4D4)3 by rietveld analysis of neutron powder diffraction data [J]. Acta Cryst., 1992, 48(3):414-419.
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