Co-precipitation Synthesis and Characterization of CaMoO4:Eu3+,Bi3+,Li+ Red Phosphor

GUANG Rong-feng; SUN Qian; LI Qin-qin; XU Ning

doi:10.3788/fgxb20133408.1000

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Co-precipitation Synthesis and Characterization of CaMoO₄:Eu³⁺,Bi³⁺,Li⁺ Red Phosphor

更新时间：2020-08-12

- Co-precipitation Synthesis and Characterization of CaMoO₄:Eu³⁺,Bi³⁺,Li⁺ Red Phosphor
- Chinese Journal of Luminescence Vol. 34, Issue 8, Pages: 1000-1005(2013)
- 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：
- DOI：10.3788/fgxb20133408.1000
  CLC： O482.31
- Received：07 May 2013，
  
  Revised：19 June 2013，
  
  Published：10 August 2013
- 稿件说明：
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关荣锋, 孙倩, 李勤勤, 许宁. CaMoO4：Eu3+,Bi3+,Li+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 CaMoO4:Eu3+,Bi3+,Li+ Red Phosphor[J]. Chinese Journal of Luminescence, 2013,34(8): 1000-1005
关荣锋, 孙倩, 李勤勤, 许宁. CaMoO4：Eu3+,Bi3+,Li+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 CaMoO4:Eu3+,Bi3+,Li+ 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

：Eu

0.25

、Ca

0.75

MoO

：Eu

0.25-

及Ca

0.5

MoO

：Eu

0.25-2

0.25+

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

：Eu

红色荧光粉为白钨矿结构

颗粒尺寸约为0.5~1 m。掺杂Bi

的Ca

0.75

MoO

：Eu

0.25-

的相对发光强度明显高于未掺Bi

的Ca

0.75

MoO

：Eu

0.25

荧光粉。Bi

离子的掺杂将吸收来的能量传递给激活离子Eu

起到了能量传递的作用。当Bi

掺杂量为

=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

和 Bi

共掺合成的Ca

0.5

MoO

：Eu

0.23

0.01

0.26

红色荧光粉的发光性能强于Ca

0.75

MoO

：Eu

0.25

、Ca

0.5

MoO

：Eu

0.25

及Ca

0.75

MoO

：Eu

0.24

0.01

。

Abstract

0.75

MoO

：Eu

0.25

0.75

MoO

：Eu

0.25-

and Ca

0.5

MoO

：Eu

0.25-2

0.25+

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

：Eu

are scheelite structure

and the particle sizes are about 0.5~1 m. The relative luminous intensity of Ca

0.75

MoO

：Eu

0.25-

is significantly higher than Ca

0.75

MoO

：Eu

0.25

because Bi

ions transmit the absorbed energy to Eu

ions. When the doping mole fraction of Bi

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

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

：Eu

0.23

0.01

0.26

is significantly higher than Ca

0.75

MoO

：Eu

0.25

0.5

MoO

：Eu

0.25

and Ca

0.75

MoO

：Eu

0.24

0.01

red phosphors.

关键词

Keywords

references

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