LiAl5O8∶Tb3+绿色荧光粉的合成及发光性能

谢礼梅; 杨定明; 魏乐; 胡亚敏

doi:10.3788/fgxb20123301.0036

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LiAl₅O₈∶Tb³⁺绿色荧光粉的合成及发光性能

材料合成及性能研究 | 更新时间：2020-08-12

- LiAl₅O₈∶Tb³⁺绿色荧光粉的合成及发光性能
- Synthesis and Luminescence Properties of LiAl₅O₈∶Tb³⁺ Green Phosphor
- 发光学报 2012年33卷第1期页码：36-40
- 作者机构：
  
  西南科技大学四川省非金属复合与功能材料重点实验室-省部共建国家重点实验室培育基地, 四川绵阳 621010
- 作者简介：
- 基金信息：
  
  国防基础研究项目(B312011001)();西南科技大学博士基金(08zx0103)资助项目()
- DOI：10.3788/fgxb20123301.0036
  中图分类号： O482.31
- 收稿日期：2011-10-10，
  
  修回日期：2011-11-14，
  
  网络出版日期：2012-01-10，
  
  纸质出版日期：2012-01-10
- 稿件说明：
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谢礼梅, 杨定明, 魏乐, 胡亚敏. LiAl5O8∶Tb3+绿色荧光粉的合成及发光性能[J]. 发光学报, 2012,33(1): 36-40

XIE Li-mei, YANG Ding-ming, WEI Le, HU Ya-min. Synthesis and Luminescence Properties of LiAl5O8∶Tb3+ Green Phosphor[J]. 发光学报, 2012,33(1): 36-40
谢礼梅, 杨定明, 魏乐, 胡亚敏. LiAl5O8∶Tb3+绿色荧光粉的合成及发光性能[J]. 发光学报, 2012,33(1): 36-40 DOI： 10.3788/fgxb20123301.0036.

XIE Li-mei, YANG Ding-ming, WEI Le, HU Ya-min. Synthesis and Luminescence Properties of LiAl5O8∶Tb3+ Green Phosphor[J]. 发光学报, 2012,33(1): 36-40 DOI： 10.3788/fgxb20123301.0036.

摘要

采用溶胶-凝胶法合成了Tb

掺杂的LiAl

荧光粉并对其发光性能进行了研究。XRD分析表明

前驱物在750 ℃下灼烧2 h得到的样品为纯相的LiAl

。样品的激发谱为一宽带

其最强的峰位于231 nm。发射谱由4组窄带组成

其中最强峰位于542 nm

对应于Tb

离子的

跃迁。最佳的Tb

掺杂摩尔分数为0.01。探讨了Tb

掺杂浓度、电荷补偿剂(Li

)和助熔剂(H

)对样品发光性能的影响

结果表明

调节激活剂浓度、添加电荷补偿剂和助熔剂均可以在很大程度上提高材料的发射强度。

Abstract

Trivalent terbium (Tb

) doped lithium aluminate(LiAl

) was synthesized by sol-gel method and the luminescent properties were investigated in this paper. The X-ray diffraction patterns (XRD) showed that the phosphors sintered at 750 ℃ for 2 h were pure LiAl

phase.The excitation spectrum consisted of a broad band

in which the higher energy peaks located at 231 nm.The emission spectrum was composed of four narrow bands and the strongest emission peak was located at 542 nm

corresponding to the

transition of Tb

. The appropriate doping molar fraction of Tb

was 0.01 for the 542 nm emission.The effect of amount of Tb

doping content

the compensators (Li

) and flux (H

) on the emission intensity of the phosphor were also studied. The results show that the emission intensity can be controlled by the above factors

and the intensity can be enhanced by selecting the prime optimum conditions.

关键词

Keywords

references

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