Preparation and Luminescent Properties of Near UV Excited KBaGd(MoO4)3: Dy3+ Phosphors

SONG Ming-jun; WANG Lin-tong; ZHANG Na-na; REN Yang; LI Dan

doi:10.3788/fgxb20183903.0259

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Preparation and Luminescent Properties of Near UV Excited KBaGd(MoO₄)₃: Dy³⁺ Phosphors

更新时间：2020-08-12

- Preparation and Luminescent Properties of Near UV Excited KBaGd(MoO₄)₃: Dy³⁺ Phosphors
- Chinese Journal of Luminescence Vol. 39, Issue 3, Pages: 259-265(2018)
- 作者机构：
  
  潍坊学院化学化工学院, 山东潍坊 261061
- 作者简介：
- 基金信息：
  
  Supported by National Natural Science Foundation of China (51541205);Natural Scien
- DOI：10.3788/fgxb20183903.0259
  CLC： O482.31
- Received：24 July 2017，
  
  Revised：08 October 2017，
  
  Published Online：25 October 2017，
  
  Published：05 March 2018
- 稿件说明：
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宋明君, 王林同, 张娜娜等. 近紫外光激发KBaGd(MoO4)3∶Dy3+荧光粉的制备及发光性能[J]. 发光学报, 2018,39(3): 259-265

SONG Ming-jun, WANG Lin-tong, ZHANG Na-na etc. Preparation and Luminescent Properties of Near UV Excited KBaGd(MoO4)3: Dy3+ Phosphors[J]. Chinese Journal of Luminescence, 2018,39(3): 259-265
宋明君, 王林同, 张娜娜等. 近紫外光激发KBaGd(MoO4)3∶Dy3+荧光粉的制备及发光性能[J]. 发光学报, 2018,39(3): 259-265 DOI： 10.3788/fgxb20183903.0259.

SONG Ming-jun, WANG Lin-tong, ZHANG Na-na etc. Preparation and Luminescent Properties of Near UV Excited KBaGd(MoO4)3: Dy3+ Phosphors[J]. Chinese Journal of Luminescence, 2018,39(3): 259-265 DOI： 10.3788/fgxb20183903.0259.

摘要

采用溶胶-凝胶法制备了KBaGd（MoO

）

∶Dy

荧光粉，并借助于扫描电镜（SEM）、X射线粉末衍射（XRD）、激发光谱、发射光谱及荧光衰减曲线等测试手段对其形貌、结构及光谱性能进行了分析。结果显示：与高温固相反应法相比，采用溶胶-凝胶法得到的样品粒径均匀，且形状更加规则。在近紫外光（390 nm）的激发下，KBaGd（MoO

）

∶Dy

荧光粉的两个主发射峰分别位于485 nm与577 nm处，样品蓝黄比约为0.7。在KBaGd（MoO

）

基质中，Dy

离子的最佳掺杂摩尔分数为10%，引起浓度猝灭的机理是激活离子间的电偶极间相互作用。随着Dy

离子浓度的升高，样品荧光寿命缩短，且荧光衰减曲线逐渐偏离单指数变化。

Abstract

KBaGd(MoO

)

:Dy

phosphors were synthesized by sol-gel method

and their morphology

structure and spectral properties were investigated by means of SEM

XRD

excitation and luminescent spectra

as well as luminescent decay curves. The results show that the shape and the particle size distribution of samples synthesized by sol-gel method are more regular and narrower than those synthesized by solid state method. Under the excitation of near UV light (390 nm)

the samples exhibit two intensive emission bands around 485 nm and 577 nm

and the value of

is about 0.7. In the host of KBaGd(MoO

)

the optimum mole fraction of Dy

is 10%

and the concentration quenching effect is caused by dipole-dipole interactions between Dy

ions. The luminescent lifetime becomes shorter and the decay curves become nonexponential with the increasing of Dy

concentration.

关键词

Keywords

references

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