Luminescence Properties of LiAl5O8 ∶ Fe3+ Phosphor

YIN Yan; ZHANG Xiao-ming; LIU Guang-xi; WANG Hai-bo

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Luminescence Properties of LiAl₅O₈ ∶ Fe³⁺ Phosphor

paper | 更新时间：2020-08-12

- Luminescence Properties of LiAl₅O₈ ∶ Fe³⁺ Phosphor
- Chinese Journal of Luminescence Vol. 31, Issue 4, Pages: 473-476(2010)
- 作者机构：
  
  1. 南京工业大学材料学院,江苏南京,210009
  2. 南京工业大学电光源材料研究所,江苏南京,210015
- 作者简介：
- 基金信息：
  
  Project supported by "The Tenth Five-Year"Plane of Jiangsu Province (B
- DOI：
  CLC： O482.31
- Received：02 November 2009，
  
  Revised：31 January 2010，
  
  Published Online：27 August 2010，
  
  Published：27 August 2010
- 稿件说明：
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印琰, 张晓明, 刘光熙, 王海波. LiAl5O8 ∶ Fe3+发光粉的发光性能[J]. 发光学报, 2010,31(4): 473-476

YIN Yan, ZHANG Xiao-ming, LIU Guang-xi, WANG Hai-bo. Luminescence Properties of LiAl5O8 ∶ Fe3+ Phosphor[J]. 发光学报, 2010,31(4): 473-476
印琰, 张晓明, 刘光熙, 王海波. LiAl5O8 ∶ Fe3+发光粉的发光性能[J]. 发光学报, 2010,31(4): 473-476 DOI：

YIN Yan, ZHANG Xiao-ming, LIU Guang-xi, WANG Hai-bo. Luminescence Properties of LiAl5O8 ∶ Fe3+ Phosphor[J]. 发光学报, 2010,31(4): 473-476 DOI：

摘要

激活的铝酸锂是深红色发射的红色荧光粉

其发射的峰值波长为675 nm

呈现出少有的纯正的深红色发光。本文对LiAl

∶ Fe

荧光粉的基质组成和激活剂浓度进行了研究。结果表明 ∶ Fe

掺杂LiAl

的激发光谱

在

=673 nm的波长监测下

有序相的激发光谱在284 nm处有强吸收带

为Fe

-O

电荷迁移带;激发波长

=254 nm的有序相样品的发射波长峰值为673 nm

并伴随一个在长波方向轻微不对称得

发射是属于

(

G)-

(

S)的跃迁。当原料Li

与Al

的量的比为0.21时

样品的发光强度最好;样品的发光强度随激活剂Fe

的浓度的增加而提高

当浓度达到0.5%时

发光强度达到最大值

超过0.5%时呈现出浓度猝灭效应。

Abstract

Iron-activated LiAl

is one of red emitting phosphors

exhibiting a broad-band photoluminescence peaked around 675 nm. The component of the matrix and the content of activation ion in LiAl

∶ Fe

phosphors were studied in this paper. The results shown that

under the monitoring at 673 nm

the ordered phase of excitation spectra indicated that there is a strong absorption band at 284 nm

which is charge transfer band of Fe

-O

.And there is a single emission band at 673 nm emission under 254 nm excitation. And the emission band is slight asymmetry in the direction of longer wavelength

which belongs to

(

S) transition.The luminescent intensity is the strongest when the content ratio of Li

and Al

is 0.21. The emission intensity enhances as the content of Fe

increases. When the content of Fe

is 0.5%

the luminescent intensity is the strongest. But the luminescent intensity decreases when the content of Fe

increases over 0.5%.

关键词

Keywords

references

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