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1. 中国科学院 长春光学精密机械与物理研究所,吉林 长春,中国,130033
2. 吉林大学物理学院 超硬材料国家重点实验室,吉林 长春,130012
收稿日期:2013-05-02,
修回日期:2013-05-15,
纸质出版日期:2013-08-10
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侯利, 吉日嘎兰图, 齐向东, 付作岭. 白光LED用红色荧光粉KLa(MoO<sub>4</sub>)<sub>2</sub>:Eu<sup>3+</sup>的制备及发光性能[J]. 发光学报, 2013,34(8): 965-969
HOU Li, Jirigalantu, QI Xiang-dong, FU Zuo-ling. Preparation and Optical Properties of Red Emitting Phosphor KLa(MoO<sub>4</sub>)<sub>2</sub>:Eu<sup>3+</sup> for White LEDs[J]. Chinese Journal of Luminescence, 2013,34(8): 965-969
侯利, 吉日嘎兰图, 齐向东, 付作岭. 白光LED用红色荧光粉KLa(MoO<sub>4</sub>)<sub>2</sub>:Eu<sup>3+</sup>的制备及发光性能[J]. 发光学报, 2013,34(8): 965-969 DOI: 10.3788/fgxb20133408.0965.
HOU Li, Jirigalantu, QI Xiang-dong, FU Zuo-ling. Preparation and Optical Properties of Red Emitting Phosphor KLa(MoO<sub>4</sub>)<sub>2</sub>:Eu<sup>3+</sup> for White LEDs[J]. Chinese Journal of Luminescence, 2013,34(8): 965-969 DOI: 10.3788/fgxb20133408.0965.
采用水热法制备红色荧光粉KLa(MoO
4
)
2
:Eu
3+
通过X射线粉末衍射(XRD)、场发射扫描电镜(FE-SEM)和荧光光谱(PL)对样品进行了表征。实验结果表明:pH值是合成样品KLa(MoO
4
)
2
:Eu
3+
的关键因素
当溶液pH值接近7时
荧光粉的纯度较高
分散性良好、粒度均匀、呈规则球形。这种荧光材料可以被紫外光279 nm、近紫外光395 nm和蓝光465 nm有效激发
发射主峰位于617 nm
是一种可应用于白光LED转换用的新型红色荧光粉。
Eu
3+
-doped KLa(MoO
4
)
2
phosphor was prepared successfully
via
the hydrothermal process. And it was characterized by X-ray diffraction (XRD)
field emission-scanning electron microscopy (FE-SEM) and photoluminescence (PL)
respectively. The experimental results indicate that the pH values of the reaction solution have important effects on the phase structures and the morphologies of the products. A crystallization pH value of 7 was optimal. This phosphor can be effectively excited by 279
395
465 nm and emits red light at 617 nm with line spectra. The optical properties suggest that KLa(MoO
4
)
2
:Eu
3+
is an efficient red-emitting phosphor for white LEDs applications.
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