Synthesis and Luminescent Properties of LiGd(MoO4)2 : Eu3+ Red Phosphors for White LEDs

XI Cui-sheng; GAO Yuan-zhe; WANG Ping; SHI Shi-kao; WANG Rui-fen; ZHOU Ji

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Synthesis and Luminescent Properties of LiGd(MoO₄)₂ : Eu³⁺ Red Phosphors for White LEDs

paper | 更新时间：2020-08-12

- Synthesis and Luminescent Properties of LiGd(MoO₄)₂ : Eu³⁺ Red Phosphors for White LEDs
- Chinese Journal of Luminescence Vol. 31, Issue 3, Pages: 311-315(2010)
- 作者机构：
  
  1. 河北师范大学化学与材料科学学院,河北石家庄,050016
  2. 河北化工医药职业技术学院化学与环境工程系,河北石家庄,050026
  3. 清华大学材料科学与工程系北京,100084
- 作者简介：
- 基金信息：
- DOI：
  CLC： O482.31
- Received：25 January 2009，
  
  Revised：02 January 1900，
  
  Published Online：30 June 2010，
  
  Published：30 June 2010
- 稿件说明：
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席翠省;高元哲;王萍;石士考;王瑞芬;周济. 白光LED用红色发光粉 LiGd(MoO4)2 : Eu3+的制备和发光特性[J]. 发光学报, 2010,31(3): 311-315

XI Cui-sheng;GAO Yuan-zhe;WANG Ping;SHI Shi-kao;WANG Rui-fen;ZHOU Ji. Synthesis and Luminescent Properties of LiGd(MoO4)2 : Eu3+ Red Phosphors for White LEDs[J]. 发光学报, 2010,31(3): 311-315
席翠省;高元哲;王萍;石士考;王瑞芬;周济. 白光LED用红色发光粉 LiGd(MoO4)2 : Eu3+的制备和发光特性[J]. 发光学报, 2010,31(3): 311-315 DOI：

XI Cui-sheng;GAO Yuan-zhe;WANG Ping;SHI Shi-kao;WANG Rui-fen;ZHOU Ji. Synthesis and Luminescent Properties of LiGd(MoO4)2 : Eu3+ Red Phosphors for White LEDs[J]. 发光学报, 2010,31(3): 311-315 DOI：

摘要

采用高温固相法制备了LiGd

x(MoO

)

钼酸盐红色发光粉

利用XRD和发光光谱技术对粉体进行了性能表征。结果表明:该系列发光粉均为四方晶系的白钨矿结构

能够被近紫外光(395 nm)有效激发

产生Eu

的

特征跃迁红光发射(616 nm)。

=0.4时

即LiGd

0.6

0.4

(MoO

)

样品的发光强度超过商用红粉Y

S ∶ Eu

发光强度的5倍

虽然比未加入Gd样品 LiEu(MoO

)

的发光强度略低

但LiGd

0.6

0.4

- (MoO

)

样品的组分中却减少了60%的Eu用量

明显降低了原料成本

更具实用价值

有希望成为白光发光二极管的红色发光材料。

Abstract

A series of novel red light-emitting phosphors LiGd

x(MoO

)

were synthesized by solid-state reaction at high temperature. Their structure and luminescent properties were investigated in detail. The XRD patterns showed that all the phosphors are isostructural and share a tetragonal scheelite structure of space group

88. In the emission spectra of the phosphors

the predominant transition emission is

(616 nm) of Eu

whereas the other emissions are very weak. The excitation spectra are composed of ligand-to-metal charge transfer bands (CTB) of Mo

-O

as well as a few excitation transitions of Eu

between 4f levels. The LiGd

0.6

0.4

(MoO

)

phosphor shows very strong emission intensity in comparison with commercial phosphor Y

S ∶ Eu

. Although the fluorescence intensity of LiGd

0.6

0.4

(MoO

)

is slightly lower than that of the LiEu(MoO

)

the content over 60% Eu

is saved. Therefore

the LiGd

0.6

0.4

(MoO

)

phosphor significantly reduces the cost of raw materials. It might be a potential candidate for white LED application.

关键词

Keywords

references

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