Na3GdSi2O7：Tb3+荧光粉发光特性及Gd3+&rarr;Tb3+之间的能量传递

倪海勇; 梁宏斌; 王灵利; 张秋红

doi:10.3788/fgxb20133408.0970

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Na₃GdSi₂O₇：Tb³⁺荧光粉发光特性及Gd³⁺→Tb³⁺之间的能量传递

材料合成及性能 | 更新时间：2020-08-12

- Na₃GdSi₂O₇：Tb³⁺荧光粉发光特性及Gd³⁺→Tb³⁺之间的能量传递
- Luminescent Properties of Phosphor Na₃GdSi₂O₇：Tb³⁺ and Gd³⁺→Tb³⁺ Energy Transfer
- 发光学报 2013年34卷第8期页码：970-975
- 作者机构：
  
  1. 广州有色金属研究院稀有金属研究所,广东广州,510650
  2. 中山大学化学与化学工程学院, 广东广州 510275
- 作者简介：
- 基金信息：
  
  广州市珠江科技新星项目(2011J2200034)();广东省战略新兴产业项目(粤财工[2010]633号)资助项目()
- DOI：10.3788/fgxb20133408.0970
  中图分类号： O482.31
- 收稿日期：2013-05-01，
  
  修回日期：2013-05-31，
  
  纸质出版日期：2013-08-10
- 稿件说明：
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倪海勇, 梁宏斌, 王灵利, 张秋红. Na3GdSi2O7：Tb3+荧光粉发光特性及Gd3+→Tb3+之间的能量传递[J]. 发光学报, 2013,34(8): 970-975

NI Hai-yong, LIANG Hong-bin, WANG Ling-li, ZHANG Qiu-hong. Luminescent Properties of Phosphor Na3GdSi2O7：Tb3+ and Gd3+→Tb3+ Energy Transfer[J]. Chinese Journal of Luminescence, 2013,34(8): 970-975
倪海勇, 梁宏斌, 王灵利, 张秋红. Na3GdSi2O7：Tb3+荧光粉发光特性及Gd3+→Tb3+之间的能量传递[J]. 发光学报, 2013,34(8): 970-975 DOI： 10.3788/fgxb20133408.0970.

NI Hai-yong, LIANG Hong-bin, WANG Ling-li, ZHANG Qiu-hong. Luminescent Properties of Phosphor Na3GdSi2O7：Tb3+ and Gd3+→Tb3+ Energy Transfer[J]. Chinese Journal of Luminescence, 2013,34(8): 970-975 DOI： 10.3788/fgxb20133408.0970.

摘要

采用高温固相法合成了Na

(

=0.01

0.02

0.04

0.06

0.08

0.1)系列荧光粉。研究了荧光粉的真空紫外-可见发光光谱和荧光寿命

讨论了Tb

在扭曲八面体结构(标示为Gd(1)

)和正三棱柱构型(标示为Gd(2)

)两种格位中的最低5d轨道能级。同时研究了Gd

之间无辐射能量传递速率

和无辐射能量传递效率

。研究结果表明：Tb

在Gd(1)

格位中的最低允许跃迁和禁戒跃迁的5d轨道能级分别位于235 nm和280 nm

在Gd(2)

格位中的最低允许跃迁和禁戒跃迁的5d轨道能级分别位于224 nm和256 nm。随着Tb

浓度的增加

能量传递效率及速率显著增大

说明在Na

中存在有效的Gd

-Tb

能量传递。

Abstract

doped sodium gadolinium pyrosilicate phosphors Na

were prepared using a high-temperature solid-state reaction technique. The spectroscopic properties of Na

-Tb

in VUV-UV-Vis range and fluorescent lifetimes were investigated. The lowest 5d orbitals of Tb

in two sites both 6-fold distorted octahedron coordination (trigonal antiprism tap) (Gd

(1)) and 6-fold regular trigonal prism coordination (tp) (Gd

(2)) were discussed. The lowest 5d orbitals of Tb

in Gd

(1) is 235 nm for allowed transition

and 280 nm for forbidden transition. The lowest 5d orbitals of Tb

in Gd

(2) is 224 nm for allowed transition

and 256 nm for forbidden transition. The nonradiative energy-transfer rate

and energy-transfer efficiency

were also investigated. The results show that there is efficient Gd

-Tb

energy-transfer in Na

for

and

increasing with the increasing of Tb

concentration.

关键词

Keywords

references

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Na3GdSi2O7：Tb3+荧光粉发光特性及Gd3+→Tb3+之间的能量传递

Luminescent Properties of Phosphor Na3GdSi2O7：Tb3+ and Gd3+→Tb3+ Energy Transfer

DOI：10.3788/fgxb20133408.0970

摘要

Abstract

关键词

Keywords

references

Na₃GdSi₂O₇：Tb³⁺荧光粉发光特性及Gd³⁺→Tb³⁺之间的能量传递

Luminescent Properties of Phosphor Na₃GdSi₂O₇：Tb³⁺ and Gd³⁺→Tb³⁺ Energy Transfer