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发光学与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
收稿日期:2013-07-04,
修回日期:2013-09-06,
纸质出版日期:2013-11-10
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吕少哲, 张家骅, 张继森, 鄂书林, 赵海峰, 骆永石. Eu<sup>3+</sup>掺杂的含氧磷酸盐发光性质[J]. 发光学报, 2013,34(11): 1435-1439
L&#220; Shao-zhe, ZHANG Jia-hua, ZHANG Ji-shen, E Shu-lin, ZHAO Hai-feng, LUO Yong-shi. Luminescent Properties of Eu<sup>3+</sup>-doped Oxyphosphates[J]. Chinese Journal of Luminescence, 2013,34(11): 1435-1439
吕少哲, 张家骅, 张继森, 鄂书林, 赵海峰, 骆永石. Eu<sup>3+</sup>掺杂的含氧磷酸盐发光性质[J]. 发光学报, 2013,34(11): 1435-1439 DOI: 10.3788/fgxb20133411.1435.
L&#220; Shao-zhe, ZHANG Jia-hua, ZHANG Ji-shen, E Shu-lin, ZHAO Hai-feng, LUO Yong-shi. Luminescent Properties of Eu<sup>3+</sup>-doped Oxyphosphates[J]. Chinese Journal of Luminescence, 2013,34(11): 1435-1439 DOI: 10.3788/fgxb20133411.1435.
采用固态反应法制备了Gd
3
PO
7
:Eu
3+
和 La
3
PO
7
:Eu
3+
发光材料
通过X射线衍射和SEM确定了样品的结构和形貌。 在真空紫外光的激发下
Gd
3
PO
7
:Eu
3+
样品展示了较弱的基质吸收;但在紫外光的激发下
Gd
3
PO
7
:Eu
3+
显示了比La
3
PO
7
:Eu
3+
更强的红光发射
其原因是在Gd
3
PO
7
:Eu
3+
中存在Gd
3+
到Eu
3+
的有效能量传递过程。两个样品的发射光谱峰值位于618 nm
属于Eu
3+
的
5
D
0
7
F
2
跃迁。Eu
3+
在材料中处于较低的格位对称环境
具有很好的色纯度。
Gd
3
PO
7
:Eu
3+
and La
3
PO
7
:Eu
3+
samples were prepared by conventional solid-state reaction route. X-ray diffraction and scanning of electron microscopy were employed to characterize the samples. The excitation and emission spectra from VUV to visible wavelength were obtained at the room temperature. It is found that the host absorption band of Gd
3
PO
7
:Eu
3+
is weaker under VUV excitation
but the red luminescence intensity of Gd
3
PO
7
:Eu
3+
is stronger than La
3
PO
7
:Eu
3+
under UV excitation. There is an efficient energy-transfer process from Gd
3+
to Eu
3+
. The two samples major emission peaks from
5
D
0
to
7
F
2
transition of Eu
3+
locate at 618 nm. The results of emission spectra indicate that the local symmetry of the Eu
3+
ions is lower and the color purity is better in these oxyphosphates samples.
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