SrLiAl3N4:Eu2+红色荧光粉的制备与发光特性

杨志平; 方恒九; 李旋旋; 冉争瑞; 王天洋

doi:10.3788/fgxb20163701.0001

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SrLiAl₃N₄:Eu²⁺红色荧光粉的制备与发光特性

材料合成及性能 | 更新时间：2020-08-12

- SrLiAl₃N₄:Eu²⁺红色荧光粉的制备与发光特性
- Syntheis and Luminescence Properties of SrLiAl₃N₄:Eu²⁺ Red Phosphor
- 发光学报 2016年37卷第1期页码：1-6
- 作者机构：
  
  1. 河北大学物理科学与技术学院,河北保定,071002
  2. 河北大学电子与信息工程学院,河北保定,071002
  3. 河北利福光电技术有限公司,河北保定,071002
- 作者简介：
- 基金信息：
  
  国家自然科学基金(50902042)();河北省自然科学基金(F2009-000217)资助项目()
- DOI：10.3788/fgxb20163701.0001
  中图分类号： O482.31
- 纸质出版日期：2016-1-10，
  
  收稿日期：2015-10-16，
  
  修回日期：2015-11-15，
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杨志平, 方恒九, 李旋旋等. SrLiAl3N4:Eu2+红色荧光粉的制备与发光特性[J]. 发光学报, 2016,37(1): 1-6

YANG Zhi-ping, FANG Heng-jiu, LI Xuan-xuan etc. Syntheis and Luminescence Properties of SrLiAl3N4:Eu2+ Red Phosphor[J]. Chinese Journal of Luminescence, 2016,37(1): 1-6
杨志平, 方恒九, 李旋旋等. SrLiAl3N4:Eu2+红色荧光粉的制备与发光特性[J]. 发光学报, 2016,37(1): 1-6 DOI： 10.3788/fgxb20163701.0001.

YANG Zhi-ping, FANG Heng-jiu, LI Xuan-xuan etc. Syntheis and Luminescence Properties of SrLiAl3N4:Eu2+ Red Phosphor[J]. Chinese Journal of Luminescence, 2016,37(1): 1-6 DOI： 10.3788/fgxb20163701.0001.

摘要

使用高温固相法于还原气氛中合成了SrLiAl

:Eu

荧光粉并研究了其晶体结构和发光性质。样品均可以被蓝光或紫外光有效激发发射红光。XRD和SEM图谱显示合成了单相SrLiAl

。粉体的激发光谱在200~600 nm波长范围内呈现出双峰宽带激发带

在267 nm、474 nm处分别有一个激发峰。发射光谱仅有一个宽带发射峰

峰值在654 nm处

属于Eu

离子的5d4f特征跃迁。荧光粉发光强度与Eu

离子掺杂摩尔分数之间的关系表明:随着Eu

离子掺杂摩尔分数的增加

粉体发光强度先上升后下降

最佳掺杂摩尔分数为0.4%

继续增大Eu

离子的掺杂量会发生浓度猝灭现象。所准备的SrLiAl

:Eu

荧光粉具有较好的热稳定性和较高的量子效率。

Abstract

SrLiAl

:Eu

red-emitting phosphors were prepared in reducing atmosphere by high temperature solid-state reaction which could be effectively excited by ultraviolet and blue light. Luminescence properties and crystal structure of the phosphors were investigated. X-ray diffraction patterns and scanning electron microscopy image show that the sample is a pure phase of SrLiAl

In the excitation spectrum (from 200 to 600 nm)

there are two wide bands and peaks at 267 nm and 474 nm. The emission spectrum shows a wide band with a peak at 654 nm corresponding to the 5d4f transition of Eu

. The effect of the doping concentration of Eu

was investigated. The result shows that the luminescent intensity firstly increases and then decreases with the increasing of Eu

mole fraction

and the best doping mole fraction of Eu

is 0.4%. The concentration quenching will occur if Eu

continue to be doped. The phosphors have good thermal quenching properties and quantum efficiency.

关键词

高温固相法荧光粉红光Eu2+

Keywords

high temperature solid-state reactionphosphorredEu2+

references

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