Photoluminescence Properties of Y2(W,Mo)O6 ∶ Eu3+ Incorporated with Li+ Ions

JIN Hai-jie; TIAN Lian-hua

doi:10.3788/fgxb20113205.0451

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Photoluminescence Properties of Y₂(W,Mo)O₆ ∶ Eu³⁺ Incorporated with Li⁺ Ions

paper | 更新时间：2020-08-12

- Photoluminescence Properties of Y₂(W,Mo)O₆ ∶ Eu³⁺ Incorporated with Li⁺ Ions
- Chinese Journal of Luminescence Vol. 32, Issue 5, Pages: 451-455(2011)
- 作者机构：
  
  延边大学理学院物理系, 吉林延吉,133002
- 作者简介：
- 基金信息：
- DOI：10.3788/fgxb20113205.0451
  CLC： O482.31
- Received：13 December 2010，
  
  Revised：24 February 2011，
  
  Published Online：22 May 2011，
  
  Published：22 May 2011
- 稿件说明：
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金海杰, 田莲花. Li+ 离子掺杂对红色发光材料Y2 (W,Mo)O6 ∶ Eu3+ 发光性能的影响[J]. 发光学报, 2011,32(5): 451-455

JIN Hai-jie, TIAN Lian-hua. Photoluminescence Properties of Y2(W,Mo)O6 ∶ Eu3+ Incorporated with Li+ Ions[J]. Chinese Journal of Luminescence, 2011,32(5): 451-455
金海杰, 田莲花. Li+ 离子掺杂对红色发光材料Y2 (W,Mo)O6 ∶ Eu3+ 发光性能的影响[J]. 发光学报, 2011,32(5): 451-455 DOI： 10.3788/fgxb20113205.0451.

JIN Hai-jie, TIAN Lian-hua. Photoluminescence Properties of Y2(W,Mo)O6 ∶ Eu3+ Incorporated with Li+ Ions[J]. Chinese Journal of Luminescence, 2011,32(5): 451-455 DOI： 10.3788/fgxb20113205.0451.

摘要

采用高温固相法制备了荧光粉Y

Mo)O

∶ Eu

利用X射线衍射仪和电子扫描显微镜对样品的结构和形貌进行了表征

并利用荧光光谱法分析了样品的光谱特性。首先在Y

中掺入少量的Mo

离子

掺入Mo

后增加了原Y

∶ Eu

的激发光谱在近紫外光区的吸收

扩展了激发光谱的谱宽

但却使Y

∶ Eu

发光强度降低。为解决这一问题

在Y

0.96

0.04

∶ Eu

中掺入Li

离子

Li起到助熔剂和润滑剂的作用

有效提高了Y

0.96

0.04

∶ Eu

的发光强度。

Abstract

The photoluminescence properties of Y

2-x

Mo)O

∶ Eu

were investigated in this paper. The excitation spectra of Y

Mo)O

∶ Eu

showed two broad excitation bands at 290 and 368 nm which were attributable to the O

and O

transitions

respectively. The excitation band edge moved from 370 nm to 450 nm with the incorporation of Mo

ions. The emission spectra exhibited two weak lines at 588

593 nm owing to the

transition

and strong sharp peak at about 610 nm owing to the

transition of the Eu

ion. Moreover

the bluish-green luminescence of the WO

group corresponding to the

transition was also observed in these compounds. The emission of the WO

decreases with the increasing concentration of Mo

in Y

Mo)O

∶ Eu

due to the energy transfer with the process WO

MoO

. As a result

pure red color emission was obtained with the incorporation of Mo

ions. However

the emission intensities of Y

Mo)O

∶ Eu

decreased with incorporation of Mo

ions. In order to enhance the emission intensities of Y

Mo)O

∶ Eu

ions were introduced into Y

Mo)O

∶ Eu

. The red luminescence of Eu

in Y

Mo)O

was greatly enhanced after codoping monovalent alkali metal ions Li

into the lattice. The morphology of powder particles was characterized by scanning electron microscope. The incorporation of Li

increased the particle grain size. The hexagonal crystalline of the Y

Mo)O

∶ Eu

powder had a preferred growth orientation. It was speculated that the Li

ions may serve as a selfpromoter for better crystallization or as a lubricant for the complete incorporation of the Eu

ions into the host lattice

and it resulted to the enhancemednt of PL of Y

Mo)O

∶ Eu

.This study showed that the red phosphor

Mo)O

∶ Eu

incorporated with Li

ions was advantageous for LEDs application.

关键词

Keywords

references

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