新型绿色荧光粉BaLa2ZnO5：Tb3+的合成与发光性质

杨志平; 杨富; 侯春彩; 刘玉峰

doi:10.3788/fgxb20143510.1153

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新型绿色荧光粉BaLa₂ZnO₅：Tb³⁺的合成与发光性质

材料合成及性能 | 更新时间：2020-08-12

- 新型绿色荧光粉BaLa₂ZnO₅：Tb³⁺的合成与发光性质
- Synthesis and Luminescence Properties of Novel Green Emitting Phosphor BaLa₂ZnO₅：Tb³⁺
- 发光学报 2014年35卷第10期页码：1153-1157
- 作者机构：
  
  1. 河北大学物理科学与技术学院,河北保定,071002
  2. 河北北方学院理学院, 河北张家口 075000
  3. 清华大学热能系电力系统与发电设备控制与仿真国家重点实验室, 北京 100084
- 作者简介：
- 基金信息：
  
  国家自然科学基金（61205180）资助项目
- DOI：10.3788/fgxb20143510.1153
  中图分类号： O482.31
- 收稿日期：2014-07-04，
  
  修回日期：2014-08-08，
  
  纸质出版日期：2014-10-03
- 稿件说明：
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杨志平, 杨富, 侯春彩等. 新型绿色荧光粉BaLa2ZnO5：Tb3+的合成与发光性质[J]. 发光学报, 2014,35(10): 1153-1157

YANG Zhi-ping, YANG Fu, HOU Chun-cai etc. Synthesis and Luminescence Properties of Novel Green Emitting Phosphor BaLa2ZnO5：Tb3+[J]. Chinese Journal of Luminescence, 2014,35(10): 1153-1157
杨志平, 杨富, 侯春彩等. 新型绿色荧光粉BaLa2ZnO5：Tb3+的合成与发光性质[J]. 发光学报, 2014,35(10): 1153-1157 DOI： 10.3788/fgxb20143510.1153.

YANG Zhi-ping, YANG Fu, HOU Chun-cai etc. Synthesis and Luminescence Properties of Novel Green Emitting Phosphor BaLa2ZnO5：Tb3+[J]. Chinese Journal of Luminescence, 2014,35(10): 1153-1157 DOI： 10.3788/fgxb20143510.1153.

摘要

采用高温固相法合成了适合紫外-近紫外激发的BaLa

2－

ZnO

：

绿色荧光粉，并对样品的晶格结构和发光性质进行了研究。结果表明：Ba

ZnO

属于四方晶系，具有空间群I

4/mcm，

基本结构由LaO

、BaO

和ZnO

多面体组成。样品的激发光谱为4f

宽带吸收，激发峰位于241 nm和279 nm。用279 nm紫外光源激发样品，发射峰位于548 nm。在Tb

掺杂量为

=0.3时发光强度最大。掺杂量

0.03时发生浓度猝灭现象。根据能量共振理论，BaLa

2－

ZnO

：

荧光粉的浓度猝灭机理是电偶极-电偶极相互作用。

Abstract

A series of BaLa

2－

ZnO

green phosphors were synthesized by solid state reaction

and the structure and luminescence properties of the phosphors were also investigated. The results show that the ternary oxide Ba

ZnO

has a tetragonal structure with a space group of I4/

mcm

and its basic structure consists of LaO

BaO

and ZnO

polyhedra. The excitation spectra of the samples are mainly constituted by broadband peak at 241 nm and 279 nm. Under the excitation of 279 nm

the peak of emission spectra was located at 548 nm

which belongs to the ff transition of Tb

ions. There exists concentration quenching in BaLa

2－

ZnO

phosphors

when the doping concentration

is more than 0.3. According to Dexter theory

the concentration quenching mechanism of Tb

in BaLa

ZnO

:Tb

is the d-d interaction.

关键词

Keywords

references

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