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1. 厦门大学 能源研究院,福建 厦门,361005
2. 厦门大学 材料学院,福建 厦门,中国,361000
3. 厦门大学 物理与机电工程学院,福建 厦门,361005
收稿日期:2011-06-14,
修回日期:2011-07-21,
网络出版日期:2011-10-22,
纸质出版日期:2011-10-22
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王荣, 徐进, 陈朝. 白光LED用荧光材料 Sr<sub>3</sub>B<sub>2</sub>O<sub>6</sub>∶Eu<sup>3+</sup> ,Na<sup>+</sup> 的制备及发光性能[J]. 发光学报, 2011,32(10): 983-987
WANG Rong, XU Jin, CHEN Chao. Fabrication and Luminescent Properties of Sr<sub>3</sub>B<sub>2</sub>O<sub>6</sub>∶Eu<sup>3+</sup>, Na<sup>+</sup> Phosphor for White LED Applications[J]. Chinese Journal of Luminescence, 2011,32(10): 983-987
王荣, 徐进, 陈朝. 白光LED用荧光材料 Sr<sub>3</sub>B<sub>2</sub>O<sub>6</sub>∶Eu<sup>3+</sup> ,Na<sup>+</sup> 的制备及发光性能[J]. 发光学报, 2011,32(10): 983-987 DOI:
WANG Rong, XU Jin, CHEN Chao. Fabrication and Luminescent Properties of Sr<sub>3</sub>B<sub>2</sub>O<sub>6</sub>∶Eu<sup>3+</sup>, Na<sup>+</sup> Phosphor for White LED Applications[J]. Chinese Journal of Luminescence, 2011,32(10): 983-987 DOI:
采用高温固相法合成了可用于白光LED的Sr
3
B
2
O
6
∶Eu
3+
Na
+
荧光粉。研究了煅烧时间、稀土Eu
3+
掺杂量等条件对材料发光性能的影响。结果表明:适量掺入Eu
3+
、Na
+
之后
基质的晶格结构未发生变化;稀土Eu
3+
掺杂摩尔分数为6%
煅烧时间为3 h时最佳;作为电荷补偿剂的Na
+
的引入
较大地提高了荧光粉发光强度。该荧光粉可被394 nm近紫外光激发
在615 nm处红光发射最强
是一种潜在的近紫外白光LED用荧光材料。
A series of Sr
3
B
2
O
6
∶Eu
3+
Na
+
phosphors were synthesized at 1 200 ℃ by conventional solid state reaction method and their luminescent properties were investigated. Structural characterization of the luminescent materials was carried out with X-ray powder diffraction (XRD) analysis. XRD results showed that no apparently structure transformation of the Sr
3
B
2
O
6
matrix was observed after doping appropriate amount of Eu
3+
Na
+
. Photoluminescence spectra indicated that the phosphor can be efficiently excited by 394 nm near-UV light and exhibited an intense red luminescence corresponding to the electric dipole transition
5
D
0
7
F
2
at 615 nm. It was found that the optimal conditions to obtain the red emitting phosphor are 6% mole fraction of Eu
3+
3 h of the calcination time. In addition
the introduction of charge compensator Na
+
can lead to the strongly enhanced emission intensity of Eu
3+
. Therefore
the material could be a promising red phosphor for possible applications in the white LED.
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