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CaMoO4：Eu3+,Bi3+,Li+红色荧光粉的共沉淀制备与表征
Co-precipitation Synthesis and Characterization of CaMoO4:Eu3+,Bi3+,Li+ Red Phosphor
- 发光学报 2013年34卷第8期 页码：1000-1005
- 作者机构：
1. 盐城工学院 省新型环保重点实验室,江苏 盐城,224051
2. 河南理工大学 材料科学与工程学院,河南 焦作,454000
- 作者简介：
- 基金信息：国家自然科学基金(21276220)();江苏省新型环保重点实验室开放基金(AE2011)();河南省基础与前沿技术研究计划(082300440150)资助项目()
DOI：10.3788/fgxb20133408.1000
中图分类号： O482.31收稿日期：2013-05-07，
修回日期：2013-06-19，
纸质出版日期：2013-08-10
- 稿件说明：
移动端阅览
关荣锋, 孙倩, 李勤勤, 许宁. CaMoO<sub>4</sub>：Eu<sup>3+</sup>,Bi<sup>3+</sup>,Li<sup>+</sup>红色荧光粉的共沉淀制备与表征[J]. 发光学报, 2013,34(8): 1000-1005
GUANG Rong-feng, SUN Qian, LI Qin-qin, XU Ning. Co-precipitation Synthesis and Characterization of CaMoO<sub>4</sub>:Eu<sup>3+</sup>,Bi<sup>3+</sup>,Li<sup>+</sup> Red Phosphor[J]. Chinese Journal of Luminescence, 2013,34(8): 1000-1005
关荣锋, 孙倩, 李勤勤, 许宁. CaMoO<sub>4</sub>：Eu<sup>3+</sup>,Bi<sup>3+</sup>,Li<sup>+</sup>红色荧光粉的共沉淀制备与表征[J]. 发光学报, 2013,34(8): 1000-1005 DOI： 10.3788/fgxb20133408.1000.
GUANG Rong-feng, SUN Qian, LI Qin-qin, XU Ning. Co-precipitation Synthesis and Characterization of CaMoO<sub>4</sub>:Eu<sup>3+</sup>,Bi<sup>3+</sup>,Li<sup>+</sup> Red Phosphor[J]. Chinese Journal of Luminescence, 2013,34(8): 1000-1005 DOI： 10.3788/fgxb20133408.1000.
摘要
采用共沉淀法合成了红色荧光粉Ca
0.75
MoO
4
：Eu
0.25
3+
、Ca
0.75
MoO
4
：Eu
0.25-
x
3+
Bi
x
3+
及Ca
0.5
MoO
4
：Eu
0.25-2
x
3+
Bi
x
3+
Li
0.25+
x
+
并采用X射线衍射(XRD)、拉曼光谱
扫描电镜(SEM)和荧光光谱(PL)测定分析了其结构形貌特征及发光性能。结果表明：制备的CaMoO
4
：Eu
3+
Bi
3+
Li
+
红色荧光粉为白钨矿结构
颗粒尺寸约为0.5~1 m。掺杂Bi
3+
的Ca
0.75
MoO
4
：Eu
0.25-
x
3+
Bi
x
3+
的相对发光强度明显高于未掺Bi
3+
的Ca
0.75
MoO
4
：Eu
0.25
3+
荧光粉。Bi
3+
离子的掺杂将吸收来的能量传递给激活离子Eu
3+
起到了能量传递的作用。当Bi
3+
掺杂量为
x
=0.005时
在395 nm激发下
主发射峰在616 nm处的相对发光强度最大
但掺杂浓度过高时会出现浓度猝灭现象。另外
电荷补偿剂的掺入能够解决材料中因同晶取代引起的电荷不平衡的问题
以Li
+
作电荷补偿剂、Eu
3+
和 Bi
3+
共掺合成的Ca
0.5
MoO
4
：Eu
3+
0.23
Bi
0.01
3+
Li
+
0.26
红色荧光粉的发光性能强于Ca
0.75
MoO
4
：Eu
0.25
3+
、Ca
0.5
MoO
4
：Eu
0.25
3+
Li
0.25
+
及Ca
0.75
MoO
4
：Eu
0.24
3+
Bi
0.01
3+
。
Abstract
Ca
0.75
MoO
4
：Eu
0.25
3+
Ca
0.75
MoO
4
：Eu
0.25-
x
3+
Bi
x
3+
and Ca
0.5
MoO
4
：Eu
0.25-2
x
3+
Bi
x
3+
Li
0.25+
x
+
were synthesized by co-precipitation method. The crystal structure
morphology and luminescent properties were measured and studied in detail by X-ray diffraction (XRD)
scanning electron microscope (SEM)
Raman spectrum
and photoluminescence spectrophotometer (PL). The synthesized red phosphors of CaMoO
4
：Eu
3+
Bi
3+
Li
+
are scheelite structure
and the particle sizes are about 0.5~1 m. The relative luminous intensity of Ca
0.75
MoO
4
：Eu
0.25-
x
3+
Bi
x
3+
is significantly higher than Ca
0.75
MoO
4
：Eu
0.25
3+
because Bi
3+
ions transmit the absorbed energy to Eu
3+
ions. When the doping mole fraction of Bi
3+
is 0.005
the relative luminous intensity of 616 nm main emission peak is the largest under the excitation of 395 nm. However
the phenomenon of concentration quenching occurs when Bi
3+
doping concentration is higher. In addition
the incorporation of charge compensation can solve the problem of charge imbalance caused by the isomorphous substitution. It is shown that the luminescence property of Ca
0.5
MoO
4
：Eu
3+
0.23
Bi
0.01
3+
Li
+
0.26
is significantly higher than Ca
0.75
MoO
4
：Eu
0.25
3+
Ca
0.5
MoO
4
：Eu
0.25
3+
Li
0.25
+
and Ca
0.75
MoO
4
：Eu
0.24
3+
Bi
0.01
3+
red phosphors.
关键词
Keywords
references
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