Preparation of Eu2+-activated Aluminate Doped by N Phosphors for White LED

BAI Zhao-hui; ZHANG Xi-yan; ZHU Hong-yuan; ZHANG Shu-ting; LU Jian-jun; ZHOU Xiao-chen

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Preparation of Eu²⁺-activated Aluminate Doped by N Phosphors for White LED

paper | 更新时间：2020-08-12

- Preparation of Eu²⁺-activated Aluminate Doped by N Phosphors for White LED
- Chinese Journal of Luminescence Vol. 31, Issue 5, Pages: 732-736(2010)
- 作者机构：
  
  长春理工大学材料科学与工程学院,吉林长春,130022
- 作者简介：
- 基金信息：
  
  T Development Plan Project of China (20160414043GH)
- DOI：
  CLC： O482.31
- Received：28 June 2010，
  
  Revised：05 July 2010，
  
  Published Online：21 September 2010，
  
  Published：21 September 2010
- 稿件说明：
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柏朝晖, 张希艳, 朱宏苑, 张舒婷, 吕建军, 周晓宸. 白光LED用Eu2+离子激活含氮铝酸盐发光粉的制备[J]. 发光学报, 2010,31(5): 732-736

BAI Zhao-hui, ZHANG Xi-yan, ZHU Hong-yuan, ZHANG Shu-ting, LU Jian-jun, ZHOU Xiao-chen. Preparation of Eu2+-activated Aluminate Doped by N Phosphors for White LED[J]. 发光学报, 2010,31(5): 732-736
柏朝晖, 张希艳, 朱宏苑, 张舒婷, 吕建军, 周晓宸. 白光LED用Eu2+离子激活含氮铝酸盐发光粉的制备[J]. 发光学报, 2010,31(5): 732-736 DOI：

BAI Zhao-hui, ZHANG Xi-yan, ZHU Hong-yuan, ZHANG Shu-ting, LU Jian-jun, ZHOU Xiao-chen. Preparation of Eu2+-activated Aluminate Doped by N Phosphors for White LED[J]. 发光学报, 2010,31(5): 732-736 DOI：

摘要

采用高温固相反应法制备Sr

6-3

∶ Eu

发光材料。发光光谱分析表明

该材料在400~550 nm可见光激发下

发射光谱为峰值波长为600 nm的宽带谱。XRD分析结果显示

6-3

与Sr

的晶体结构相同。研究了Eu

离子浓度对材料发光性能的影响

结果表明随着Eu

离子浓度的增加

材料的发光强度呈现出先增强后减弱的趋势

当Eu

浓度为15%时

发光强度最大。根据Dexter理论

其浓度猝灭机理是电四极-电四极的相互作用。引入Ce

作为敏化剂

样品的发光强度明显增强。

Abstract

The Sr

6-3

∶ Eu

phosphor was synthesized by solid-state reaction method. The study of Sr

6-3

∶ Eu

spectra indicated that the emission spectra was the broad band spectra peaking at 600 nm when exciting at 400~550 nm. The XRD results showed that the crystal structure of Sr

6-3

∶ Eu

was the same as Sr

. Effect of Eu

concentration on luminescent intensity of Sr

6-3

∶ Eu

phosphor was investigated. The results showed that the luminescent intensity firstly increased with increasing Eu

content and then decreases. The Eu

content corresponding to the maximal luminescent intensity is 15%. According to Dexter theory

the concentration quenching mechanisms are the q-q (quadrupole-quadrupole) interaction. The emission intensity of Sr

6-3

∶ Eu

is higher than that of the other phosphor activated by Eu

only.

关键词

Keywords

references

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Dexter D L, Schulman J H. Concentration and excitation effects in multiphonon non-radiative transitions of rare-earth ions

. J. Chem. Phys., 1954, 22 (5):1063-1067.

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