近红外发光材料Mg2SnO4:Cr3+的制备及发光性质

蔡吉泽; 庞然; 于湛; 刘丽艳; 李成宇

doi:10.3788/fgxb20194012.1505

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近红外发光材料Mg₂SnO₄:Cr³⁺的制备及发光性质

材料合成及性能 | 更新时间：2020-08-12

- 近红外发光材料Mg₂SnO₄:Cr³⁺的制备及发光性质
- Preparation and Luminescence Properties of Near Infrared Luminescent Material Mg₂SnO₄: Cr³⁺
- 发光学报 2019年40卷第12期页码：1505-1513
- 作者机构：
  
  1. 沈阳师范大学化学化工学院, 辽宁沈阳 110034
  2. 中国科学院长春应用化学研究所稀土资源利用国家重点实验室, 吉林长春 130022
- 作者简介：
- 基金信息：
  
  国家重点研发计划（2016YFB07010003）();辽宁省教育厅科学研究经费项目（LJC201902）资助()
- DOI：10.3788/fgxb20194012.1505
  中图分类号： O482.31;O614.61
- 收稿日期：2019-07-03，
  
  修回日期：2019-07-31，
  
  网络出版日期：2019-12-05，
  
  纸质出版日期：2019-12-05
- 稿件说明：
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蔡吉泽, 庞然, 于湛等. 近红外发光材料Mg2SnO4:Cr3+的制备及发光性质[J]. 发光学报, 2019,40(12): 1505-1513

CAI Ji-ze, PANG Ran, YU Zhan etc. Preparation and Luminescence Properties of Near Infrared Luminescent Material Mg2SnO4: Cr3+[J]. Chinese Journal of Luminescence, 2019,40(12): 1505-1513
蔡吉泽, 庞然, 于湛等. 近红外发光材料Mg2SnO4:Cr3+的制备及发光性质[J]. 发光学报, 2019,40(12): 1505-1513 DOI： 10.3788/fgxb20194012.1505.

CAI Ji-ze, PANG Ran, YU Zhan etc. Preparation and Luminescence Properties of Near Infrared Luminescent Material Mg2SnO4: Cr3+[J]. Chinese Journal of Luminescence, 2019,40(12): 1505-1513 DOI： 10.3788/fgxb20194012.1505.

摘要

采用高温固相法合成了一种新型近红外发光材料Mg

SnO

。利用X射线粉末衍射仪对样品的结构进行了表征，证明所得到的荧光粉具有单一尖晶石结构，掺杂离子的加入并没有改变晶体结构。利用荧光光谱和荧光衰减光谱对荧光粉的发光性质进行了研究。当被470 nm的蓝光激发时，荧光粉在700 nm处出现一个尖锐的发射峰（R锐线）和中心发射在750 nm处的宽带发射峰，分别归属于Cr

的

和

（

F）

跃迁。研究不同浓度Cr

掺杂对样品发光性质的影响，发现样品的发光强度随着Cr

浓度的增加而增大。当Cr

掺杂浓度

=0.02时达到最大值，之后出现发光强度的猝灭，猝灭机理为多极相互作用。样品的荧光寿命随着Cr

掺杂浓度的增大逐渐减小，从而证明Cr

之间存在着能量传递现象。Mg

SnO

系列荧光粉还表现出了近红外长余辉发光性质。

Abstract

A novel near-infrared luminescent material Mg

SnO

was synthesized by high temperature solid phase method. The structure of the sample was characterized using X-ray powder diffractometer. It was proved that the obtained phosphor had a single spinel structure

and the addition of doping ions did not significantly change the crystal structure. The luminescent properties of the samples were investigated using fluorescence spectroscopy and fluorescence decay spectroscopy. When excited at 470 nm

the phosphor exhibits a sharp emission at 700 nm and a strong broad band emission centered at 750 nm

which belong to the

and

(

transitions of Cr

respectively. The effects of Cr

doping concentrations on the luminescence properties of the samples were investigated. It was found that the luminescence intensity of the samples increased with the increase of Cr

concentration and reached its maximum at

=0.02. Then luminescence intensity quenching occurred and the quenching mechanism is the electric dipole-electric dipole interaction. The fluorescence lifetime of the sample decreases with the increase of Cr

doping concentration

which proves that there is energy transfer between Cr

ions. The Mg

SnO

phosphors also exhibit near-infrared long-lasting luminescence properties.

关键词

Keywords

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