Thermal Stability of Red Afterglow Phosphor Y2O2S ∶ Eu,Mg,Ti,Gd

JI Tong-kun; JIANG Hong-yi

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Thermal Stability of Red Afterglow Phosphor Y₂O₂S ∶ Eu,Mg,Ti,Gd

paper | 更新时间：2020-08-12

- Thermal Stability of Red Afterglow Phosphor Y₂O₂S ∶ Eu,Mg,Ti,Gd
- Chinese Journal of Luminescence Vol. 32, Issue 2, Pages: 122-126(2011)
- 作者机构：
  
  武汉理工大学材料科学与工程学院,湖北武汉,430070
- 作者简介：
- 基金信息：
- DOI：
  CLC： O482.31
- Received：04 June 2010，
  
  Revised：11 September 2010，
  
  Published Online：22 February 2011，
  
  Published：22 February 2011
- 稿件说明：
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姬同坤, 姜洪义. Y2O2S∶Eu, Mg, Ti, Gd 红色长余辉发光材料的热稳定性[J]. 发光学报, 2011,32(2): 122-126

JI Tong-kun, JIANG Hong-yi. Thermal Stability of Red Afterglow Phosphor Y2O2S ∶ Eu,Mg,Ti,Gd[J]. Chinese Journal of Luminescence, 2011,32(2): 122-126
姬同坤, 姜洪义. Y2O2S∶Eu, Mg, Ti, Gd 红色长余辉发光材料的热稳定性[J]. 发光学报, 2011,32(2): 122-126 DOI：

JI Tong-kun, JIANG Hong-yi. Thermal Stability of Red Afterglow Phosphor Y2O2S ∶ Eu,Mg,Ti,Gd[J]. Chinese Journal of Luminescence, 2011,32(2): 122-126 DOI：

摘要

采用高温固相法制备了Y

S ∶ Eu

Gd红色长余辉材料

研究了热处理工艺对材料稳定性的影响。用X射线衍射表征该材料的相组成

用激发光谱、发射光谱、余辉亮度对材料的发光性能进行表征。结果表明:热处理温度在600 ℃以下时

材料的发光性能不变;当热处理温度达到800 ℃时

发光性能缓慢下降;当热处理温度达到1 000 ℃时

主晶相Y

S变成Y

和Y

发光性能急剧下降。与铝酸盐及硫化物发光材料相比

S ∶ Eu

Gd红色长余辉材料具有较好的热稳定性。

Abstract

In this paper

red afterglow phosphor Y

S ∶ Eu

Gd was prepared by solid state reaction method and the thermal stability was studied in detail. The obtained phosphor compositions were characterized by X-ray diffraction (XRD). Luminescent properties were investigated by measuring emission spectra

excitation spectra and decay curves. When the heating temperature rises from 200 to 600 ℃

the major phase is Y

S and the luminescent properties are almost unchanged. When the heating temperature is 800 ℃

the Y

and Y

phase are observed. The peak position and peak pattern of emission spectrum are unchanged

but the intensity of emission spectrum is decreased. The excitation spectrum shows the same variation regularity. The relative intensity at 5 min (after the excitation source was turn off) is decreased to 80% compared with the one without heating process. When the heating temperature is increased to 1 000 ℃

the major phase is changed to Y

and Y

the intensity of emission spectrum is very low. The afterglow phenomenon almost disappears. The thermal stability of Y

S ∶ Eu

Gd phosphor is better than that of sulfide and aluminates phosphors. Thus

the Y

S ∶ Eu

Gd phosphor is a promising candidate of red afterglow luminescent material which can resistant to higher temperature environment.

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Keywords

references

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