Enhanced Red Emission in Ca2.96Eu0.04(PO4)2 Phosphor by Charge Compensation

ZHANG Zhi-wei; WANG Xiao-juan; REN Yan-jun

doi:10.3788/fgxb20143509.1071

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Enhanced Red Emission in Ca_2.96Eu_0.04(PO₄)₂ Phosphor by Charge Compensation

更新时间：2020-08-12

- Enhanced Red Emission in Ca_2.96Eu_0.04(PO₄)₂ Phosphor by Charge Compensation
- Chinese Journal of Luminescence Vol. 35, Issue 9, Pages: 1071-1075(2014)
- 作者机构：
  
  河北科技师范学院化学工程学院,河北秦皇岛,066600
- 作者简介：
- 基金信息：
- DOI：10.3788/fgxb20143509.1071
  CLC： O482.31;O614.33
- Received：16 April 2014，
  
  Revised：14 July 2014，
  
  Published：03 September 2014
- 稿件说明：
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张志伟, 王晓娟, 任艳军. 电荷补偿剂增强的Ca2.96Eu0.04(PO4)2红色荧光粉[J]. 发光学报, 2014,35(9): 1071-1075

ZHANG Zhi-wei, WANG Xiao-juan, REN Yan-jun. Enhanced Red Emission in Ca2.96Eu0.04(PO4)2 Phosphor by Charge Compensation[J]. Chinese Journal of Luminescence, 2014,35(9): 1071-1075
张志伟, 王晓娟, 任艳军. 电荷补偿剂增强的Ca2.96Eu0.04(PO4)2红色荧光粉[J]. 发光学报, 2014,35(9): 1071-1075 DOI： 10.3788/fgxb20143509.1071.

ZHANG Zhi-wei, WANG Xiao-juan, REN Yan-jun. Enhanced Red Emission in Ca2.96Eu0.04(PO4)2 Phosphor by Charge Compensation[J]. Chinese Journal of Luminescence, 2014,35(9): 1071-1075 DOI： 10.3788/fgxb20143509.1071.

摘要

采用高温固相法合成了Li

、Na

、K

和Si

作为电荷补偿剂的Ca

2.96

0.04

（PO

）

白光LED用红色荧光粉。采用X射线衍射仪、荧光光谱仪对材料的物相和发光性能进行了表征。样品的激发光谱由200~310 nm的电荷迁移带和310~500 nm的锐线光谱组成，其中396 nm的激发强度最大。发射光谱主要由

（593 nm）和

（616 nm）跃迁导致的发射峰构成。掺入Li

、Na

、K

和Si

可以有效提高Ca

2.96

0.04

（PO

）

荧光粉的发光强度，同时对荧光粉的寿命和色坐标影响不大。荧光粉的色坐标均位于红色区域。

Abstract

Novel Li

and Si

-doped Ca

2.96

0.04

(PO

)

red phosphors were synthesized using a conventional solid-state reaction route. The effects of codoping of charge compensatory ions on the phase and luminescent properties of Ca

2.96

0.04

(PO

)

red phosphors were investigated by X-ray diffraction and photoluminescence spectra. The excitation spectra include both broad band (200-310 nm) and sharp peaks (310-500 nm). From emission spectra

it is observed that these phosphors exhibit two dominating bands situated at 593 and 616 nm

originating from the

and

transition of the Eu

ion

respectively. The luminescence of Ca

2.96

0.04

-(PO

)

can be enhanced by the incorporation of Li

and Si

. Furthermore

the charge compensation mechanism was discussed. The charge compensatory additives have little influence on the decay times and CIE of all the phosphors. The CIE chromaticity coordinates of these phosphors all locate in the red region. It implies that Ca

2.96

0.04

(PO

)

is a good candidate as a red-emitting phosphor pumped by near-ultraviolet (NUV) InGaN chip for fabricating white light-emitting diodes (wLEDs).

关键词

Keywords

references

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