Gd2(MoO4)3∶Tb3+荧光粉的固相合成与光谱性质

程丽红; 仲海洋; 孙佳石; 李香萍; 张金苏; 陈宝玖

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Gd₂(MoO₄)₃∶Tb³⁺荧光粉的固相合成与光谱性质

材料合成及性能研究 | 更新时间：2020-08-12

- Gd₂(MoO₄)₃∶Tb³⁺荧光粉的固相合成与光谱性质
- Solid State Reaction Synthesis and Spectroscopic Properties of Gd₂(MoO₄)₃∶Tb³⁺ Phosphor
- 发光学报 2011年32卷第12期页码：1238-1242
- 作者机构：
  
  大连海事大学物理系,辽宁大连,116026
- 作者简介：
- 基金信息：
  
  辽宁省自然科学基金(20092147)资助项目()
- DOI：
  中图分类号： O482.31
- 收稿日期：2011-08-29，
  
  修回日期：2011-10-13，
  
  网络出版日期：2011-12-22，
  
  纸质出版日期：2011-12-22
- 稿件说明：
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程丽红, 仲海洋, 孙佳石, 李香萍, 张金苏, 陈宝玖. Gd2(MoO4)3∶Tb3+荧光粉的固相合成与光谱性质[J]. 发光学报, 2011,32(12): 1238-1242

CHENG Li-hong, ZHONG Hai-yang, SUN Jia-shi, LI Xiang-ping, ZHANG Jin-su, CHEN Bao-jiu. Solid State Reaction Synthesis and Spectroscopic Properties of Gd2(MoO4)3∶Tb3+ Phosphor[J]. Chinese Journal of Luminescence, 2011,32(12): 1238-1242
程丽红, 仲海洋, 孙佳石, 李香萍, 张金苏, 陈宝玖. Gd2(MoO4)3∶Tb3+荧光粉的固相合成与光谱性质[J]. 发光学报, 2011,32(12): 1238-1242 DOI：

CHENG Li-hong, ZHONG Hai-yang, SUN Jia-shi, LI Xiang-ping, ZHANG Jin-su, CHEN Bao-jiu. Solid State Reaction Synthesis and Spectroscopic Properties of Gd2(MoO4)3∶Tb3+ Phosphor[J]. Chinese Journal of Luminescence, 2011,32(12): 1238-1242 DOI：

摘要

以MoO

、Gd

及Tb

为原料

以NH

为助溶剂

在碳粉还原条件下制备了不同Tb

掺杂浓度的Gd

(MoO

)荧光粉样品。采用X射线衍射(XRD)对样品的晶体结构进行了表征

发现掺杂浓度的改变未对产物的晶体结构产生影响

产物均为单一正交相Gd

(MoO

)

。对样品的激发、发射光谱及荧光衰减特性进行了测量和分析

结果表明:样品在200~300 nm范围内具有较强的源自于Tb

的f-d跃迁及Mo-O电荷迁移跃迁吸收;在紫外光激发下观察到了Tb

及MoO

基团的本征发射。研究了发光强度、荧光寿命以及样品的发光色坐标与Tb

浓度的关系

结果表明样品的发射光色纯度较差

该体系荧光粉与实际应用要求还有较大差距。

Abstract

doped Gd

(MoO

)

phosphors were prepared by using MoO

and Tb

as starting materials via a solid state reaction with flux of NH

. The X-ray diffraction was used to characterize the crystal structure of the final resultants. It was found that the products exist in orthorhombic phase with space group

Pba2

. Excitation and emission spectra indicated that the studied phosphors can absorb 200~300 nm lights

which corresponding to both the f-d and Mo-O transitions

and emit blue broad band and green narrow lines originate from MoO

and f-f transitions

respectively. Meanwhile

the concentration quenching and fluorescence decays were also studied

and it was found that in the case of taking carbon powder as reductant

can not be well reduced. The color coordinates for the phosphors various with Tb

concentrations

and that the color purity for the phosphors are not good. From the obtained results

it can be concluded that this phosphor is not a promising one for the practical applications.

关键词

Keywords

references

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