Luminescence and Energy Transfer of Tunable Emission Phosphor Ca9Al(PO4)7: Tb3+,Sm3+ for White LEDs

TIAN Shao-hua; QIAO Zheng; SUN Ming-sheng

doi:10.3788/fgxb20194012.1469

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Luminescence and Energy Transfer of Tunable Emission Phosphor Ca₉Al(PO₄)₇: Tb³⁺,Sm³⁺ for White LEDs

Synthesis and Properties of Materials | 更新时间：2020-08-12

- Luminescence and Energy Transfer of Tunable Emission Phosphor Ca₉Al(PO₄)₇: Tb³⁺,Sm³⁺ for White LEDs
- Chinese Journal of Luminescence Vol. 40, Issue 12, Pages: 1469-1477(2019)
- 作者机构：
  
  1. 中国传媒大学数据科学与智能媒体学院, 北京 100024
  2. 河北大学工商学院, 河北保定 071002
- 作者简介：
- 基金信息：
  
  Supported by Fundamental Research Funds for The Central Universities
- DOI：10.3788/fgxb20194012.1469
  CLC： O482.31
- Received：12 July 2019，
  
  Revised：25 September 2019，
  
  Published Online：05 December 2019，
  
  Published：05 December 2019
- 稿件说明：
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田少华, 乔峥, 孙明生. 白光LEDs用颜色可调型荧光粉Ca9Al(PO4)7:Tb3+,Sm3+的发光及能量传递[J]. 发光学报, 2019,40(12): 1469-1477

TIAN Shao-hua, QIAO Zheng, SUN Ming-sheng. Luminescence and Energy Transfer of Tunable Emission Phosphor Ca9Al(PO4)7: Tb3+,Sm3+ for White LEDs[J]. Chinese Journal of Luminescence, 2019,40(12): 1469-1477
田少华, 乔峥, 孙明生. 白光LEDs用颜色可调型荧光粉Ca9Al(PO4)7:Tb3+,Sm3+的发光及能量传递[J]. 发光学报, 2019,40(12): 1469-1477 DOI： 10.3788/fgxb20194012.1469.

TIAN Shao-hua, QIAO Zheng, SUN Ming-sheng. Luminescence and Energy Transfer of Tunable Emission Phosphor Ca9Al(PO4)7: Tb3+,Sm3+ for White LEDs[J]. Chinese Journal of Luminescence, 2019,40(12): 1469-1477 DOI： 10.3788/fgxb20194012.1469.

摘要

采用高温固相法制备了一系列Tb

、Sm

和Tb

/Sm

掺杂的Ca

Al（PO

）

荧光粉。采用X射线衍射技术、光谱及荧光寿命等手段表征了材料的性能。以Tb

的380 nm激发峰作为激发源时，发现Ca

Al-（PO

）

:Tb

，Sm

的发射光谱中既包含Tb

的

6-3

跃迁发射，又含有Sm

的

5/2

5/2-9/2

跃迁发射。当增加Sm

的掺杂量时，基于Tb

-Sm

间的能量传递，有效地增加了Ca

Al（PO

）

:Tb

，Sm

的发射强度，能量传递的机理是电偶极-电偶极相互作用。另外，Ca

Al（PO

）

:Tb

，Sm

的量子效率可以达到50.6%。上述结果表明，Ca

Al（PO

）

:Tb

，Sm

材料在紫外-近紫外白光LEDs领域具有一定的潜在应用价值。

Abstract

A series of activators Tb

and Tb

/Sm

ions doped Ca

Al(PO

)

phosphors were synthesized by high temperature solid-state method. The characteristics of phosphor were recorded by X-ray diffraction

luminescence and fluorescent decay curves. Under 380 nm excitation

the

6-3

of Tb

emission lines and

5/2

5/2-9/2

of Sm

orange emission lines can be observed from Ca

Al(PO

)

:Tb

. When increased Sm

contents

the orange-red emission intensity of Sm

can be enhanced by the efficient energy transfer from Tb

to Sm

ion

and the electric dipole-dipole interaction is responsible for the energy transfer. The best quantum efficiency of Ca

Al(PO

)

:Tb

is 50.6%. The results indicate that it may be the potential application to ultraviolet-pumped white light emitting diodes.

关键词

Keywords

references

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