Preparation and Characterization of Double Perovskite Sr2GdSbO6:Eu3+ Phosphor

Fang Zhi-xiong; Yi Shuang-ping; Zhou Yi-xuan; Zhao Wei-ren

doi:10.12052/gdutxb.210008

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Preparation and Characterization of Double Perovskite Sr₂GdSbO₆:Eu³⁺ Phosphor

更新时间：2026-05-27

- Preparation and Characterization of Double Perovskite Sr₂GdSbO₆:Eu³⁺ Phosphor
- Vol. 40, Issue 2, Pages: 88-94(2023)
- 作者机构：
  
  广东工业大学物理与光电工程学院,广东,广州,510006
- 作者简介：
- 基金信息：
- DOI：10.12052/gdutxb.210008
  CLC： O482.31
- Online First：25 March 2023，
  
  Published：2023
- 稿件说明：
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方志雄, 易双萍, 周一轩, 赵韦人. 双钙钛矿结构Sr₂GdSbO₆:Eu³⁺荧光粉的制备与表征[J]. 广东工业大学学报, 2023, 40(2): 88-94. DOI: 10.12052/gdutxb.210008.

Fang Zhi-xiong, Yi Shuang-ping, Zhou Yi-xuan, et al. Preparation and Characterization of Double Perovskite Sr₂GdSbO₆:Eu³⁺ Phosphor[J]. 2023, 40(2): 88-94. DOI: 10.12052/gdutxb.210008.
方志雄, 易双萍, 周一轩, 赵韦人. 双钙钛矿结构Sr₂GdSbO₆:Eu³⁺荧光粉的制备与表征[J]. 广东工业大学学报, 2023, 40(2): 88-94. DOI: 10.12052/gdutxb.210008. DOI：

Fang Zhi-xiong, Yi Shuang-ping, Zhou Yi-xuan, et al. Preparation and Characterization of Double Perovskite Sr₂GdSbO₆:Eu³⁺ Phosphor[J]. 2023, 40(2): 88-94. DOI: 10.12052/gdutxb.210008. DOI：

摘要

采用高温固相法成功制备了双钙钛矿结构的Sr

GdSbO

:Eu

红色荧光粉，并表征了其XRD、光致发光光谱和荧光衰减寿命曲线。Sr

0.8

SbO

:0.2Eu

荧光粉的XRD图谱的峰位与标准卡片峰位基本吻合，表明Eu

的掺杂并未改变基质的晶体结构，Rietveld精修后的晶体参数也验证了该结果。样品的激发光谱为紫外光区的一个以340 nm为中心的宽光谱；在340 nm光源的激发下，样品的最强发射是一个中心波长为593 nm的橙红光发射波段。运用Dexter理论分析出样品的浓度淬灭机理为偶极−偶极相互作用。常温下Sr

0.8

SbO

:0.2Eu

荧光粉的荧光衰减寿命为4.202 ms，外量子效率为24.8%，升温至150 ℃时其外量子效率仍保持为常温下外量子效率的68.8%。经计算得到Sr

GdSbO

:Eu

荧光粉的色纯度最高可达99.5%。将Sr

0.8

SbO

:0.2Eu

荧光粉、蓝粉、绿粉以及365 nm的紫外芯片封装制作成的LED器件可以发射出亮眼的白光。这些结果表明Sr

GdSbO

:Eu

荧光粉是一种潜在的用于白光LED的红色荧光粉。

Abstract

The Sr

GdSbO

:Eu

red phosphor with double perovskite structure was successfully prepared by high temperature solid phase method and its XRD

photoluminescence spectrum and fluorescen

ce decay lifetime were characterized. The XRD of the Sr

0.8

SbO

:0.2Eu

phosphor is basically consistent with the peak position of the standard card

indicating that the doping of Eu

did not change the crystal structure of the matrix. The crystal parameters after Rietveld refinement also verify the result. The photoemission spectrum shows that the sample has a wide excitation area centered at 340 nm in the ultraviolet region; under the excitation of a 340 nm light source

the strongest emission of the sample is an orange-red emission band with a center wavelength of 593 nm. Using Dexter theory to analyze the concentration quenching mechanism of the sample is the dipole-dipole interaction. The fluorescence decay life of Sr

0.8

SbO

:0.2Eu

phosphors at room temperature is 4.202 ms

and the external quantum efficiency is 24.8%. When the temperature is raised to 150 ℃

the external quantum efficiency remains 68.8% of that at room temperature. The calculated color purity of Sr

GdSbO

:Eu

phosphor can reach 99.5%. Sr

0.8

SbO

:0.2Eu

phosphor

blue phosphor

green phosphor and 365 nm UV chip package were made into LED devices which can emit bright white light. These results indicate that Sr

GdSbO

:Eu

phosphor is a potential red phosphor for white LED.

关键词

Keywords

references

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