A Novel Green Phosphor Ca8MgLu(PO4)7:Tb3+ for Near Ultraviolet White Light-emitting Diodes

XIE Fei-yan; DONG Zhi-yue; DIAO Gui-qiang; LIU Bi-fu; CAI Wan-min

doi:10.3788/fgxb20153610.1132

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A Novel Green Phosphor Ca₈MgLu(PO₄)₇:Tb³⁺ for Near Ultraviolet White Light-emitting Diodes

更新时间：2020-08-12

- A Novel Green Phosphor Ca₈MgLu(PO₄)₇:Tb³⁺ for Near Ultraviolet White Light-emitting Diodes
- Chinese Journal of Luminescence Vol. 36, Issue 10, Pages: 1132-1136(2015)
- 作者机构：
  
  1. 惠州学院化学工程系,广东惠州,516007
  2. 生物无机与合成化学教育部重点实验室中山大学化学与化学工程学院, 广东广州 510275
- 作者简介：
- 基金信息：
- DOI：10.3788/fgxb20153610.1132
  CLC： O482.31
- Received：13 July 2015，
  
  Revised：11 August 2015，
  
  Published：10 October 2015
- 稿件说明：
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谢飞燕, 董志月, 刁贵强等. 一种新型的白光LED用绿色荧光粉Ca8MgLu(PO4)7:Tb3+[J]. 发光学报, 2015,36(10): 1132-1136

XIE Fei-yan, DONG Zhi-yue, DIAO Gui-qiang etc. A Novel Green Phosphor Ca8MgLu(PO4)7:Tb3+ for Near Ultraviolet White Light-emitting Diodes[J]. Chinese Journal of Luminescence, 2015,36(10): 1132-1136
谢飞燕, 董志月, 刁贵强等. 一种新型的白光LED用绿色荧光粉Ca8MgLu(PO4)7:Tb3+[J]. 发光学报, 2015,36(10): 1132-1136 DOI： 10.3788/fgxb20153610.1132.

XIE Fei-yan, DONG Zhi-yue, DIAO Gui-qiang etc. A Novel Green Phosphor Ca8MgLu(PO4)7:Tb3+ for Near Ultraviolet White Light-emitting Diodes[J]. Chinese Journal of Luminescence, 2015,36(10): 1132-1136 DOI： 10.3788/fgxb20153610.1132.

摘要

采用高温固相法合成一种单一纯相绿色荧光粉Ca

MgLu(PO

)

:Tb

通过X射线衍射(XRD)、荧光光谱(PLE

PL)和荧光寿命曲线研究了Ca

MgLu(PO

)

:Tb

的发光性能。Ca

MgLu(PO

)

:Tb

能被378 nm的近紫外光激发

发生

跃迁发出绿光

色坐标为(0.324

0.592)。Ca

MgLu(PO

)

:Tb

的量子效率可达84%

热猝灭性能良好:在150 ℃和200 ℃的发光强度积分分别是25 ℃的90.71%和86.36%。研究结果表明Ca

MgLu(PO

)

:Tb

是一种理想的适于 NUV-LED芯片激发的白光LED 用绿色荧光粉。

Abstract

A green-emitting phosphor

MgLu(PO

)

:Tb

was synthesized by a solid-state reaction. The photoluminescence excitation (PLE)

emission (PL) spectra

and decay curves were measured to investigate photo-luminescent property of Tb

in Ca

MgLu(PO

)

host. The excitation and emission spectra indicate that the phosphors can be effectively excited by the near ultraviolet (NUV) light (378 nm) and emit strong green emission of Tb

transition. The CIE chromaticity (

) of Ca

MgLu(PO

)

:Tb

is (0.324

0.592). The internal quantum efficiency of Ca

MgLu(PO

)

:Tb

is as high as 84% under the excitation of 378 nm. The phosphors show a good thermal stability at high temperature (200 ℃)

and the emission intensity at 150 ℃ and 200 ℃ is 90.71% and 86.36% of that at 25 ℃. The results indicate that Ca

MgLu

(PO

)

can be served as a potential green-emitting phosphor candidate for NUV LED application.

关键词

Keywords

references

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