绿色长余辉材料 MgAl2O4 ∶ Mn2+ 的合成及其发光特性

张 燕; 钟瑞霞; 张 霞; 任新光; 郝振东; 张家骅

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绿色长余辉材料 MgAl₂O₄ ∶ Mn²⁺ 的合成及其发光特性

论文 | 更新时间：2020-08-12

- 绿色长余辉材料 MgAl₂O₄ ∶ Mn²⁺ 的合成及其发光特性
- Synthesis and Luminescent Properties of Green Long-lasting Phosphorescent Materials MgAl₂O₄ ∶ Mn²⁺
- 发光学报 2010年31卷第4期页码：489-492
- 作者机构：
  
  1. 中国科学院长春光学精密机械与物理研究所激发态物理重点实验室, 吉林长春 130033
  2. 中国科学院研究生院, 北京 100039
  3. 东北大学秦皇岛分校,河北秦皇岛,066004
- 作者简介：
- 基金信息：
  
  国家自然科学基金(10504031,10574128)();国家"();973"();课题(2006CB601104)();863"();课题(
- DOI：
  中图分类号： O482.31
- 收稿日期：2009-11-03，
  
  修回日期：2010-04-26，
  
  网络出版日期：2010-08-27，
  
  纸质出版日期：2010-08-27
- 稿件说明：
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张燕, 钟瑞霞, 张霞, 任新光, 郝振东, 张家骅. 绿色长余辉材料 MgAl2O4 ∶ Mn2+ 的合成及其发光特性[J]. 发光学报, 2010,31(4): 489-492

ZHANG Yan, ZHONG Rui-xia, ZHANG Xia, REN Xin-guang, HAO Zhen-dong, ZHANG Jia-hua. Synthesis and Luminescent Properties of Green Long-lasting Phosphorescent Materials MgAl2O4 ∶ Mn2+[J]. 发光学报, 2010,31(4): 489-492
张燕, 钟瑞霞, 张霞, 任新光, 郝振东, 张家骅. 绿色长余辉材料 MgAl2O4 ∶ Mn2+ 的合成及其发光特性[J]. 发光学报, 2010,31(4): 489-492 DOI：

ZHANG Yan, ZHONG Rui-xia, ZHANG Xia, REN Xin-guang, HAO Zhen-dong, ZHANG Jia-hua. Synthesis and Luminescent Properties of Green Long-lasting Phosphorescent Materials MgAl2O4 ∶ Mn2+[J]. 发光学报, 2010,31(4): 489-492 DOI：

摘要

采用高温固相法在1 350 ℃下合成了Mn

掺杂的MgAl

发光材料

利用X射线衍射对所合成样品的结构进行了表征。用209 nm的紫外灯照射样品后

观察到来自Mn

的

跃迁的绿色长余辉发光。发光的激发光谱表明:Mn

-3d组态内存在一系列强的激发峰

分别在279

361

386

427

451 nm

同时还有209 nm处的Mn-O电荷迁移带

激发该吸收带会产生很强的绿色余辉。测量了余辉的衰减曲线及热释光谱

分析了Mn

掺杂浓度对样品余辉性质的影响

给出了余辉产生的可能模型。

Abstract

Green long persistent phosphors of MgAl

∶ Mn

were synthesized at high temperature under weak reductive atmosphere. The XRD pattern of the sample shown that the product is the simple MgAl

phase. Photoluminescence (PL) excitation and emission

long-lasting phosphorescent (LLP) emission

decay curves

and thermostimulated-luminescence (TSL) spectra were used to characterize the powder phosphor. The sample emits green LLP emission at about 520 nm when excited by 209 nm. There are two ways of excitation energy: (1)Mn

ions is excited directly under UV excitation between 279 nm and 451 nm

resulting in green photoluminescence; (2)For 209 nm excitation

ionscharge transfer transition exists

so the electrons from the Mn

ground state

are excited to the conduction band (CB). On one hand

the electrons in the CB can relax to the excited states of Mn

through nonradiative processes

and then is green emission followed. On the other hand

some of the electrons in the CB can also be trapped in the electron traps

and then released at high temperature

then turned to the excited states of Mn

through nonradiative processes

leading to the phenomenon of green LLP of Mn

. The possible mechanism for this phenomenon of green LLP of MgAl

∶ Mn

is also investigated based on the experimental results.

关键词

Keywords

references

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Gritsyna V T, Kazrinov Yu G, Kobyakovv A, et al. Defects and radiation induced electronic processes in magnesium aluminate spinel of different compositions

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