[1]于潘龙,田莲花*.Mn2+离子在NaTaOGeO4和Na4Ca3(AlO2)10基质中的发光特性[J].延边大学学报(自然科学版),2018,44(02):124-128.
　YU Panlong,TIAN Lianhua*.Photoluminescence properties of Mn2+ ions doped in NaTaOGeO4 and Na4Ca3(AlO2)10 host matrix[J].Journal of Yanbian University,2018,44(02):124-128.
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Mn2+离子在NaTaOGeO4和Na4Ca3(AlO2)10基质中的发光特性

《延边大学学报(自然科学版)》[ISSN:1004-4353/CN:22-1191/N] 卷: 第44卷 期数: 2018年02期 页码: 124-128 栏目: 基础科学研究 出版日期: 2018-07-20
Title:
Photoluminescence properties of Mn2+ ions doped in NaTaOGeO4 and Na4Ca3(AlO2)10 host matrix
作者:
于潘龙;  田莲花*
延边大学 理学院, 吉林 延吉 133002
Author(s):
YU Panlong;  TIAN Lianhua*
College of Science, Yanbian University, Yanji 133002, China
关键词:
Mn2+;  荧光粉;  能量传递;  发光特性
Keywords:
Mn2+;  phosphor;  energy transfer;  photoluminescence
分类号:
O482.31
文献标志码:
A
摘要:
采用高温固相法制备了掺杂Mn2+离子的NaTaOGeO4和Na4Ca3(AlO2)10荧光粉,并比较了Mn2+离子在两种基质中的发光特性.研究表明:在248 nm处的Mn2+ → O2-电荷迁移跃迁的激发下,NaTaOGeO4:Mn2+荧光粉在576 nm处有较强的属于Mn2+离子的 4T1 → 6A1能级跃迁的发射峰,其能量来源于基质的能量传递; 而Na4Ca3(AlO2)10:Mn2+荧光粉,在540 nm处有Mn2+离子的 4T1 → 6A1能级跃迁,由于该处无辐射能级跃迁的作用非常弱,导致Mn2+离子的发光强度很弱.
Abstract:
Mn2+ doped phosphors NaTaOGeO4 and Na4Ca3(AlO2)10 are prepared by the high temperature solid-state reaction. The photoluminescence properties of Mn2+ ions in these two hosts are compared in this paper. The excitation spectrum of NaTaOGeO4:Mn2+ exhibit a broad absorption band centered at 248 nm which assigned to the Mn2+→ O2- charge transfer transition. Due to the energy transfer from host matrix to Mn2+ ions, the photoluminescence spectra of NaTaOGeO4:Mn2+ exhibit a strong emission band at 576 nm which attributed to the Mn2+ ions 4T1→ 6A1 transition. However, the emission spectrum of Na4Ca3(AlO2)10:Mn2+ shows a weak nonradiative 4T1→ 6A1 transition of Mn2+ at 542 nm, thus lead to a weak emitting intensity.

参考文献/References:


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备注/Memo


*通信作者: 田莲花(1972—),女,博士,教授,研究方向为发光材料.

更新日期/Last Update: 2018-07-20