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哈尔滨师范大学 光电带隙材料省部共建教育部重点实验室, 黑龙江 哈尔滨 150025
纸质出版日期:2012-8-10,
收稿日期:2012-4-18,
修回日期:2012-6-25,
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杨晓旭, 吕树臣, 曲秀荣, 孟庆裕, 张丽丽, 桑士晶. BaWO<sub>4</sub>∶Eu<sup>3+</sup>红色荧光粉的水热制备及其发光性能[J]. 发光学报, 2012,33(8): 851-856
YANG Xiao-xu, LV Shu-chen, QU Xiu-rong, MENG Qing-yu, ZHANG Li-li, SANG Shi-jing. Hydrothermal Preparation of BaWO<sub>4</sub>∶Eu<sup>3+</sup> Red Phosphor and Its Luminescent Properties[J]. Chinese Journal of Luminescence, 2012,33(8): 851-856
杨晓旭, 吕树臣, 曲秀荣, 孟庆裕, 张丽丽, 桑士晶. BaWO<sub>4</sub>∶Eu<sup>3+</sup>红色荧光粉的水热制备及其发光性能[J]. 发光学报, 2012,33(8): 851-856 DOI: 10.3788/fgxb20123308.0851.
YANG Xiao-xu, LV Shu-chen, QU Xiu-rong, MENG Qing-yu, ZHANG Li-li, SANG Shi-jing. Hydrothermal Preparation of BaWO<sub>4</sub>∶Eu<sup>3+</sup> Red Phosphor and Its Luminescent Properties[J]. Chinese Journal of Luminescence, 2012,33(8): 851-856 DOI: 10.3788/fgxb20123308.0851.
采用水热法
通过变化水热反应时间制备出不同的BaWO
4
∶Eu
3+
样品
利用XRD和SEM分析了样品的晶体结构和表面形貌
研究了基质晶体生长取向对BaWO
4
中Eu
3+
离子特征发射的影响。实验结果表明:BaWO
4
∶Eu
3+
样品在395 nm近紫外光或464 nm蓝光激发下发射578
592
612 nm的红光
其中612 nm(
5
D
0
→
7
F
2
)发射强度明显高于592 nm (
5
D
0
→
7
F
1
)。在水热温度160 ℃的情况下
所制备的样品均为四方相
不同的水热反应时间将影响晶体在各晶向的生长速度
进而影响晶体的对称性和发光性能。水热时间为10 h时的发射强度最大。
The red phosphor powders BaWO
4
∶16%Eu
3+
were successfully prepared by hydrothermal method in different hydrothermal time. The crystal structure and surface morphology of the phosphor as-prepared was characterized by XRD patterns and SEM
respectively. The correlation between the crystal orientation of the matrix and the characteristic emission of the doped rare earth ions Eu
3+
were discussed. The pure phase structure BaWO
4
∶16%Eu
3+
phosphor was obtained under the hydrothermal reaction at 160 ℃. The room temperature characteristic emission
5
D
0
→
7
F
0
and
5
D
0
→
7
F
J
(
J
=1
2)of Eu
3+
ions in the samples as-prepared were observed under the excitation of 395 nm or 464 nm light.
5
D
0
→
7
F
2
transition emission intensity was significantly higher than those of
5
D
0
→
7
F
1
and
5
D
0
→
7
F
0
. XRD analysis indicates that the samples prepared at a hydrothermal temperature of 160 ℃ are all tetragonal. The growth rates of each crystal face vary with different hydrothermal time. This difference leads to a change of crystal symmetry and the luminescent properties of BaWO
4
∶Eu
3+
samples. The optimized hydrothermal time is 10 h for the Eu
3+
doping concentration of 16%.
水热法BaWO4∶Eu3+纳米荧光粉体发光
hydrothermal methodBaWO4∶Eu3+nano-phosphorluminescene
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