Eu<SUP>2+</SUP>激活的硅酸锶材料的发光特性

王志军; 杨志平; 王 颖; 李盼来; 郭庆林; 李 旭

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Eu²⁺激活的硅酸锶材料的发光特性

论文 | 更新时间：2020-08-12

- Eu²⁺激活的硅酸锶材料的发光特性
- Luminescence Characteristics of Eu²⁺ Activated Strontium Silicate Phosphors
- 发光学报 2009年30卷第6期页码：754-757
- 作者机构：
  
  河北大学物理科学与技术学院,河北保定,071002
- 作者简介：
- 基金信息：
- DOI：
  中图分类号： O482.31
- 纸质出版日期：2009-12-30，
  
  网络出版日期：2009-12-30，
  
  收稿日期：2009-1-19，
  
  修回日期：1900-1-2，
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王志军, 杨志平, 王颖, 等. Eu²⁺激活的硅酸锶材料的发光特性[J]. 发光学报, 2009,30(6):754-757.

WANG Zhi-jun, YANG Zhi-ping, WANG Ying, et al. Luminescence Characteristics of Eu²⁺ Activated Strontium Silicate Phosphors[J]. Chinese Journal of Luminescence, 2009,30(6):754-757.
王志军, 杨志平, 王颖, 等. Eu²⁺激活的硅酸锶材料的发光特性[J]. 发光学报, 2009,30(6):754-757. DOI：

WANG Zhi-jun, YANG Zhi-ping, WANG Ying, et al. Luminescence Characteristics of Eu²⁺ Activated Strontium Silicate Phosphors[J]. Chinese Journal of Luminescence, 2009,30(6):754-757. DOI：

摘要

采用高温固相法制备了Sr

SiO

: Eu

黄色发光材料

研究了Eu

浓度及共激活剂等对材料发光性能的影响。结果显示

随Eu

浓度的增大

SiO

: Eu

材料发射强度先增强后减弱

即存在浓度猝灭效应

根据Dexter理论

其浓度猝灭机理为电偶极-偶极相互作用。掺入共激活剂Yb、Tm均能提高材料的发射强度。利用InGaN管芯分别激发Sr

2.98

0.01

SiO

和Sr

2.98

0.01

SiO

材料

获得了很好的白光发射。

Abstract

SiO

: Eu

phosphors were synthesized by high temperature solid state reaction. The starting materials are the analytic reagents SrCO

SiO

. After the individual materials were mixed in the requisite proportions sufficiently

the powders were calcined at 1 300 ℃ for 6 h under the ambience of 5% H

in N

to reduce Eu

to Eu

. The structure was checked by powder X-ray diffraction (XRD

D/max-rA

Cu Kα

40 kV

100 mA). The excitation and emission spectra are measured by a Shimadzu RF-540 fluorescence spectrophotometer. All the photoluminescence properties of the phosphors were measured at room temperature. The obtained products are Sr

SiO

: Eu

phosphors. Effect of Eu

concentration and co-doping activation on the luminescence characteristics of Sr

SiO

: Eu

phosphors was investigated. The results showed that the emission intensities of Sr

SiO

: Eu

phosphors firstly increase with increasing Eu

concentration

and then decrease because of concentration quenching. They reach a maximum at 1% Eu

and the concentration self-quenching mechanism is the d-d interaction according to the Dexter theory. Moreover

the emission intensities can be enhanced by co-doping rare earth ions

such as Tm

and Yb

. The relative spectra of InGaN-based Sr

2.98

-Eu

0.01

SiO

2.98

0.01

SiO

or YAG ∶ Ce phosphors were measured. Because Sr

SiO

: Eu

phosphor has longer emission wavelength than YAG : Ce

so the color rendering property of InGaN-based Sr

2.98

-Eu

0.01

SiO

or Sr

2.98

0.01

SiO

is better than that of InGaN-based YAG : Ce. In conclusions

SiO

: Eu

phosphor is a promising yellow phosphor for white LED manufacture.

关键词

发光白光LED硅酸锶Eu2+

Keywords

luminescencewhite LEDstrontium silicateEu2+

references

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Eu2+激活的硅酸锶材料的发光特性

Luminescence Characteristics of Eu2+ Activated Strontium Silicate Phosphors

DOI：

摘要

Abstract

关键词

Keywords

references

Eu²⁺激活的硅酸锶材料的发光特性

Luminescence Characteristics of Eu²⁺ Activated Strontium Silicate Phosphors