MgAl2O4∶Mn2+绿色荧光粉的合成与光学性质

焦学琛; 郝振东; 张霞; 张家骅

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MgAl₂O₄∶Mn²⁺绿色荧光粉的合成与光学性质

材料合成及性能研究 | 更新时间：2020-08-12

- MgAl₂O₄∶Mn²⁺绿色荧光粉的合成与光学性质
- Fabrication and Optical Properties of MgAl₂O₄∶Mn²⁺
- 发光学报 2011年32卷第11期页码：1139-1142
- 作者机构：
  
  1. 中国科学院研究生院北京,100049
  2. 中国科学院激发态物理重点实验室长春光学精密机械与物理研究所,吉林长春,130033
- 作者简介：
- 基金信息：
  
  国家自然科学基金(10834006,10904141,10904140);国家科技部项目(2010AA03A404);吉林省科技发展计划项目(20090134,20090524);中国科学院创新项目资助
- DOI：
  中图分类号： O482.31
- 收稿日期：2011-07-18，
  
  修回日期：2011-08-18，
  
  网络出版日期：2011-11-22，
  
  纸质出版日期：2011-11-22
- 稿件说明：
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焦学琛, 郝振东, 张霞, 张家骅. MgAl2O4∶Mn2+绿色荧光粉的合成与光学性质[J]. 发光学报, 2011,32(11): 1139-1142

JIAO Xue-chen, HAO Zhen-dong, ZHANG Xia, ZHANG Jia-hua. Fabrication and Optical Properties of MgAl2O4∶Mn2+[J]. Chinese Journal of Luminescence, 2011,32(11): 1139-1142
焦学琛, 郝振东, 张霞, 张家骅. MgAl2O4∶Mn2+绿色荧光粉的合成与光学性质[J]. 发光学报, 2011,32(11): 1139-1142 DOI：

JIAO Xue-chen, HAO Zhen-dong, ZHANG Xia, ZHANG Jia-hua. Fabrication and Optical Properties of MgAl2O4∶Mn2+[J]. Chinese Journal of Luminescence, 2011,32(11): 1139-1142 DOI：

摘要

采用高温固相反应法制备了一系列MgAl

∶

。在450 nm的蓝光激发下

观察到了Mn

的

跃迁的绿色发光

发射光在

=10%时达到最大值。研究结果表明

在

＞10%之后

材料的发光强度没有明显减弱。发光强度的减弱是由于Mn

导致的缺陷增多引起的。缺陷态与Mn

对于蓝色激发光进行竞争

并且对520 nm的发射光有再吸收过程。温度升高后的发光增强也被观察到。通过变温漫反射谱研究

我们认为这与充当电子陷阱的缺陷态在高温下内部电子被热激发有关。

Abstract

MgAl

∶

phosphors with various Mn

mole fraction

has been synthesized by high temperature solid-state reaction method. Upon blue excitation at 450 nm

the green emission band at 520 nm of Mn

reaches the maximal intensity at

= 10%. Our study indicates that there is no considerable concentration quenching for

higher than 10%. The decrease of luminescence for

＞10% is due to more defects generated by Mn

introduction. The defects compete with Mn

for excitation absorption and also re-absorb luminescence of Mn

. The temperature induced luminescence enhancement has been observed. The result is well explained in connect with the defects acting as traps basing on diffuse reflection spectra at different temperatures.

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references

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