Preparation and Luminescence Properties of ZnAl2O4:Tb3+ Phosphors

GENG Yan-ling; ZHANG Peng; SUN Zhen-hai; WANG Lan-lan; KUANG Shao-ping

doi:10.3788/fgxb20133404.0433

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Preparation and Luminescence Properties of ZnAl₂O₄:Tb³⁺ Phosphors

更新时间：2020-08-12

- Preparation and Luminescence Properties of ZnAl₂O₄:Tb³⁺ Phosphors
- Chinese Journal of Luminescence Vol. 34, Issue 4, Pages: 433-437(2013)
- 作者机构：
  
  青岛科技大学化学与分子工程学院, 山东青岛 266042
- 作者简介：
- 基金信息：
- DOI：10.3788/fgxb20133404.0433
  CLC： O614.3
- Received：11 November 2012，
  
  Revised：10 December 2012，
  
  Published Online：30 November 2012，
  
  Published：10 April 2013
- 稿件说明：
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耿延玲, 张鹏, 孙振海, 王兰兰, 匡少平. 掺Tb3+铝酸锌的共沉淀法制备及发光性能研究[J]. 发光学报, 2013,34(4): 433-437

GENG Yan-ling, ZHANG Peng, SUN Zhen-hai, WANG Lan-lan, KUANG Shao-ping. Preparation and Luminescence Properties of ZnAl2O4:Tb3+ Phosphors[J]. Chinese Journal of Luminescence, 2013,34(4): 433-437
耿延玲, 张鹏, 孙振海, 王兰兰, 匡少平. 掺Tb3+铝酸锌的共沉淀法制备及发光性能研究[J]. 发光学报, 2013,34(4): 433-437 DOI： 10.3788/fgxb20133404.0433.

GENG Yan-ling, ZHANG Peng, SUN Zhen-hai, WANG Lan-lan, KUANG Shao-ping. Preparation and Luminescence Properties of ZnAl2O4:Tb3+ Phosphors[J]. Chinese Journal of Luminescence, 2013,34(4): 433-437 DOI： 10.3788/fgxb20133404.0433.

摘要

采用聚乙二醇200辅助的共沉淀法制备了ZnAl

:Tb

绿色荧光粉。通过X射线衍射(XRD)、热重-差热(TG-DTA)和荧光光谱(FL)对合成的ZnAl

:Tb

荧光粉进行了表征。XRD结果显示:合成产物为立方晶系的ZnAl

:Tb

形成良好晶体的最佳煅烧温度为700℃

与TG-DTA的数据显示一致。ZnAl

:Tb

的激发光谱由260~310 nm的宽带峰和一系列的锐线峰。发射光谱的主发射峰位于544 nm

对应于D

-F

的能级跃迁。研究发现Tb

的掺杂浓度对样品发射峰的组成强度有着很重要的影响

在Tb

的摩尔分数为5.8%时达到最大

继续增加Tb

的浓度

出现浓度猝灭现象。

Abstract

ZnAl

:Tb

green phosphors were prepared by an improved co-precipitation method. The crystal structure

phase transition and luminescence properties of as-synthesized ZnAl

:Tb

phosphors were investigated by X-ray diffraction

TG-DTA and fluorescence spectrometer

respectively. XRD results indicate that the crystal structure of the phosphors is cubic phase of ZnAl

and the best temperature for synthesis ZnAl

:Tb

with cubic structure is 700℃. The excitation spectrum is formed by a broad band (260~310 nm) and a series of sharp peaks. The emission spectrum is composed of several peaks

located at 490

544

590 and 624 nm

respectively. The main peak is at 544 nm which is contributed to Tb

ions transition from

. It is found that Tb

concentration has a significant effect on the emission spectrum. When Tb

mole fraction is 5.8%

the green emitting is the strongest. However

When Tb

mole fraction is more than 5.8%

the luminescence intensity decreases.

关键词

Keywords

references

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