Synthesis and Luminescent Properties of Na2Ca4(PO4)2SiO4 ∶ Eu3+ ,Bi3+ Red-emitting Phosphor

XIAO Quan-lan; LIU Guan-xi; ZOU Shao-yu; PENG Wen-fang; YANG Chuang-tao; ZHANG Rui; XIE Li

doi:10.3788/fgxb20113204.0332

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Synthesis and Luminescent Properties of Na₂Ca₄(PO₄)₂SiO₄ ∶ Eu³⁺ ,Bi³⁺ Red-emitting Phosphor

paper | 更新时间：2020-08-12

- Synthesis and Luminescent Properties of Na₂Ca₄(PO₄)₂SiO₄ ∶ Eu³⁺ ,Bi³⁺ Red-emitting Phosphor
- Chinese Journal of Luminescence Vol. 32, Issue 4, Pages: 332-336(2011)
- 作者机构：
  
  1. 暨南大学化学系,广东广州,510632
  2. 暨南大学纳米化学研究所,广东广州,510632
- 作者简介：
- 基金信息：
  
  Supported by Fundamental Research Funds for The Central Universities
- DOI：10.3788/fgxb20113204.0332
  CLC： O482.31
- Received：02 November 2010，
  
  Revised：20 December 2010，
  
  Published：2011
- 稿件说明：
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肖全兰, 刘关喜, 邹少瑜, 彭文芳, 杨创涛, 张蕤, 谢丽娟, 孟建新. 新型红色荧光粉Na2 Ca4 (PO4)2SiO4 ∶ Eu3+ ,Bi3+的制备及发光特性[J]. 发光学报, 2011,32(4): 332-336

XIAO Quan-lan, LIU Guan-xi, ZOU Shao-yu, PENG Wen-fang, YANG Chuang-tao, ZHANG Rui, XIE Li-juan, MENG Jian-xin. Synthesis and Luminescent Properties of Na2Ca4(PO4)2SiO4 ∶ Eu3+ ,Bi3+ Red-emitting Phosphor[J]. Chinese Journal of Luminescence, 2011,32(4): 332-336
肖全兰, 刘关喜, 邹少瑜, 彭文芳, 杨创涛, 张蕤, 谢丽娟, 孟建新. 新型红色荧光粉Na2 Ca4 (PO4)2SiO4 ∶ Eu3+ ,Bi3+的制备及发光特性[J]. 发光学报, 2011,32(4): 332-336 DOI： 10.3788/fgxb20113204.0332.

XIAO Quan-lan, LIU Guan-xi, ZOU Shao-yu, PENG Wen-fang, YANG Chuang-tao, ZHANG Rui, XIE Li-juan, MENG Jian-xin. Synthesis and Luminescent Properties of Na2Ca4(PO4)2SiO4 ∶ Eu3+ ,Bi3+ Red-emitting Phosphor[J]. Chinese Journal of Luminescence, 2011,32(4): 332-336 DOI： 10.3788/fgxb20113204.0332.

摘要

用高温固相法合成了用于白光LED的Na

4(1-

x-y

)

(PO

)

SiO

∶

红色荧光粉。研究了助熔剂H

、二次煅烧时间和稀土掺杂量等制备条件对样品发光性质的影响。结果表明

在1 200 ℃、助熔剂H

加入量为样品质量的3.8%时可得到更有利于发光的-NCPS基质

而且掺入Eu

、Bi

之后

基质的晶格结构没有发生明显变化;适宜的二次煅烧时间为1.5 h。Bi

的共掺杂可以通过能量传递大幅提高Eu

的发光强度

当Eu

、Bi

的摩尔分数分别为

=0.04和

=0.01时

粉体具有最强的红光发射。表明这种荧光粉是一种可很好用于近紫外芯片的白光LED的红色荧光粉。

Abstract

Novel red-emit phosphors

4(1-

x-y

)

(PO

)

SiO

∶

were synthesized for WLED by conventional solid-state reaction at 1 200 ℃. Effects of the H

flux

the re-calcination time and doping concentrations of Eu

on the luminescence properties were investigated. It was found that a higher Eu

emission intensity can be obtained if 30% H

was added as flux. No apparently structure transformation of the Na

(PO

)

SiO

matrix was observed after doping Eu

. The phosphors give the characteristic emission of Eu

at 615 nm under the excitation of 395 nm. Samples re-calcined at 1 200 ℃ for 1.5 h gives a strongest emission. The red emission of Eu

can be significantly enhanced by co-doping of Bi

via an energy transfer process which involves the charge transfer (CT) transition of Eu

-O

. The optimized doping mole fractions of Eu

and Bi

are

=0.04 and

=0.01

respectively. It shows that the Na

-(PO

)

SiO

∶ Eu

is a promising red phosphor for NUV-chips based WLED.

关键词

Keywords

references

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