铕离子掺杂七铝酸十二钙蓝光发射导电荧光粉的制备及其光学特性

高旭; 杨健; 张猛; 刘春光; 祝汉成; 严端廷; 徐长山; 刘玉学

doi:10.3788/fgxb20194007.0849

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铕离子掺杂七铝酸十二钙蓝光发射导电荧光粉的制备及其光学特性

材料合成及性能 | 更新时间：2020-08-12

- 铕离子掺杂七铝酸十二钙蓝光发射导电荧光粉的制备及其光学特性
- Preparation and Optical Properties of Eu²⁺ Doped 12CaO·7Al₂O₃ Blue Emitting Conductive Phosphors
- 发光学报 2019年40卷第7期页码：849-856
- 作者机构：
  
  东北师范大学物理学院, 吉林长春 130024
- 作者简介：
- 基金信息：
  
  国家自然科学基金（11674050，11374047）资助项目()
- DOI：10.3788/fgxb20194007.0849
  中图分类号： O482.31
- 纸质出版日期：2019-7-5，
  
  网络出版日期：2018-10-15，
  
  收稿日期：2018-7-31，
  
  修回日期：2018-9-22，
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高旭, 杨健, 张猛等. 铕离子掺杂七铝酸十二钙蓝光发射导电荧光粉的制备及其光学特性[J]. 发光学报, 2019,40(7): 849-856

GAO Xu, YANG Jian, ZHANG Meng etc. Preparation and Optical Properties of Eu2+ Doped 12CaO·7Al2O3 Blue Emitting Conductive Phosphors[J]. Chinese Journal of Luminescence, 2019,40(7): 849-856
高旭, 杨健, 张猛等. 铕离子掺杂七铝酸十二钙蓝光发射导电荧光粉的制备及其光学特性[J]. 发光学报, 2019,40(7): 849-856 DOI： 10.3788/fgxb20194007.0849.

GAO Xu, YANG Jian, ZHANG Meng etc. Preparation and Optical Properties of Eu2+ Doped 12CaO·7Al2O3 Blue Emitting Conductive Phosphors[J]. Chinese Journal of Luminescence, 2019,40(7): 849-856 DOI： 10.3788/fgxb20194007.0849.

摘要

采用碳包埋方法制备了不同Eu

掺杂浓度的七铝酸十二钙（C12A7:

% Eu

）导电荧光粉。在254 nm的紫外光激发下，样品呈现出位于444 nm的蓝光宽带发射峰，其来源于Eu

的4f

-4f

跃迁。当Eu

的掺杂浓度为1.0%时，蓝光发射强度最大。通过漫反射吸收光谱结合经验公式可计算C12A7:1.0% Eu

粉末样品的困陷于笼中的电子浓度为3.4010

-3

。在空气气氛下对C12A7:1.0% Eu

样品进行热处理，通过减少困陷于笼中的电子浓度，即增加困陷于笼中的O

离子浓度，可进一步提高样品的发光强度。阴极射线发光实验结果表明:铕掺杂七铝酸十二钙蓝光发射导电荧光粉在低压场发射显示器件中有潜在的应用前景。

Abstract

doped 12CaO7Al

(C12A7:

% Eu

) conductive phosphors with different concentrations were synthesized by a melting solidification method. Upon 254 nm UV excitation

we can observe a broad blue emitting band peaked at 444 nm

which originates from the 4f

-4f

transition of Eu

. As the Eu

doping concentration is 1.0%

the strongest emission intensity can be achieved. The conductive performance of Eu

doped 12CaO7Al

phosphors can be attributed to the generation of encaged electrons and the calculated encaged electron concentration is~3.4010

-3

. After the conductive phosphor was annealed in air

its photoluminescence intensity increased with increasing the amount of encaged O

anions (

i.e

. decreasing the amount of encaged electrons). Our results suggest that C12A7:Eu

blue emitting conductive phosphors have a potential application in field emission displays.

关键词

稀土离子蓝光发射导电荧光粉场发射显示

Keywords

rare earth ionblue emittingconductive phosphorFEDs

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