BaGd2(MoO4)4∶Tb3+,Eu3+荧光粉的发光特性与能量传递机理

赵旺; 周薇薇; 刘淑河; 平兆艳; 郑庆华

doi:10.3788/fgxb20194005.0581

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BaGd₂(MoO₄)₄∶Tb³⁺,Eu³⁺荧光粉的发光特性与能量传递机理

材料合成及性能 | 更新时间：2020-08-12

- BaGd₂(MoO₄)₄∶Tb³⁺,Eu³⁺荧光粉的发光特性与能量传递机理
- Luminescent Characters and Energy Transfer Mechanisms of BaGd₂(MoO₄)₄:Tb³⁺,Eu³⁺ Phosphors
- 发光学报 2019年40卷第5期页码：581-588
- 作者机构：
  
  1. 淮南师范学院电子工程学院, 安徽淮南 232038
  2. 潍坊市产品质量检验所, 山东潍坊 261031
- 作者简介：
- 基金信息：
  
  安徽省科技厅自然科学基金（1708085QE91）;安徽省教育厅自然科学基金（gxyqZD2016259，gxyqZD2016260，gxbjZD37，KJ2016A673）;淮南市级/校级科研创新团队（2016A24）资助项目
- DOI：10.3788/fgxb20194005.0581
  中图分类号： O482.31
- 纸质出版日期：2019-5-5，
  
  网络出版日期：2018-9-21，
  
  收稿日期：2018-7-25，
  
  修回日期：2018-11-2，
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赵旺, 周薇薇, 刘淑河等. BaGd2(MoO4)4∶Tb3+,Eu3+荧光粉的发光特性与能量传递机理[J]. 发光学报, 2019,40(5): 581-588

ZHAO Wang, ZHOU Wei-wei, LIU Shu-he etc. Luminescent Characters and Energy Transfer Mechanisms of BaGd2(MoO4)4:Tb3+,Eu3+ Phosphors[J]. Chinese Journal of Luminescence, 2019,40(5): 581-588
赵旺, 周薇薇, 刘淑河等. BaGd2(MoO4)4∶Tb3+,Eu3+荧光粉的发光特性与能量传递机理[J]. 发光学报, 2019,40(5): 581-588 DOI： 10.3788/fgxb20194005.0581.

ZHAO Wang, ZHOU Wei-wei, LIU Shu-he etc. Luminescent Characters and Energy Transfer Mechanisms of BaGd2(MoO4)4:Tb3+,Eu3+ Phosphors[J]. Chinese Journal of Luminescence, 2019,40(5): 581-588 DOI： 10.3788/fgxb20194005.0581.

摘要

利用高温固相法制备了BaGd

（MoO

）

∶Tb

与BaGd

（MoO

）

∶Tb

，Eu

荧光粉，并借助于X射线衍射（XRD）、激发光谱、发射光谱及荧光衰减曲线对样品的结构及发光性能进行了表征。在290 nm激发下，BaGd

（MoO

）

∶Tb

样品在550 nm处具有较强的绿光发射，表明该样品可用作绿色荧光粉。Tb

离子的最佳掺杂浓度为50%，电偶极间相互作用是引起浓度猝灭效应的主要原因。当在BaGd

（MoO

）

∶Tb

荧光粉中共掺入Eu

离子后，可同时观测到Tb

与Eu

离子的特征发射峰。随Eu

掺杂浓度的升高，Tb

离子的发光强度逐渐下降，而Eu

离子的发光强度逐渐增加。根据BaGd

（MoO

）

∶Tb

，Eu

中Tb

离子的荧光寿命计算了Tb

与Eu

离子间的能量传递效率，并根据荧光寿命与激活离子掺杂浓度的关系证实了能量传递机制为电偶极间相互作用。

Abstract

BaGd

(MoO

)

:Tb

and BaGd

(MoO

)

:Tb

phosphors were synthesized by high temperature solid state method and their structure and luminescent properties were analyzed by means of X-ray diffraction

excitation and emission spectra

and luminescent decay curves. Under excitation of 290 nm

BaGd

(MoO

)

:Tb

phosphors give rise to a intense green emission at 550 nm

indicating the samples can be used as green-emitting phosphors. The optimum concentration of Tb

ions is 50%

and the dipole-dipole interaction is the main reason for the concentration quenching. As the Eu

ions were co-doped in BaGd

(MoO

)

:Tb

phosphors

the characteristic emissions of both Tb

and Eu

ions can be observed. With the increasing concentration of Eu

ions

the emission intensities of Tb

ions decreased

while those for Eu

ions were enhanced. The energy transfer efficiencies between Tb

and Eu

ions were calculated on the basis of lifetimes of Tb

ions in BaGd

(MoO

)

:Tb

and the energy transfer mechanism was confirmed to be dipole-dipole interaction according to the relations between lifetimes and activator concentrations.

关键词

钼酸盐荧光粉能量传递颜色可调

Keywords

molybdatephosphorsenergy transfertunable color

references

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