Luminescent Properties of Rare Earth Ions Doped LaAlO3:RE3+ (RE=Eu, Tb, Sm, Tm) Phosphors

CHEN Cai-hua; WANG Xiao-jun; MENG Li-li; ZHANG Li-xia; LIANG Li-fang

doi:10.3788/fgxb20183907.0923

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Luminescent Properties of Rare Earth Ions Doped LaAlO₃:RE³⁺ (RE=Eu, Tb, Sm, Tm) Phosphors

更新时间：2020-08-12

- Luminescent Properties of Rare Earth Ions Doped LaAlO₃:RE³⁺ (RE=Eu, Tb, Sm, Tm) Phosphors
- Chinese Journal of Luminescence Vol. 39, Issue 7, Pages: 923-929(2018)
- 作者机构：
  
  1. 广西师范学院化学与材料科学学院, 广西南宁 530001
  2. 广东怀集中学, 广东怀集,526400
- 作者简介：
- 基金信息：
  
  Supported by National Natural Science Foundation of China(21161004)
- DOI：10.3788/fgxb20183907.0923
  CLC： O482.31;O614.3+1
- Received：11 November 2017，
  
  Revised：15 March 2018，
  
  Published：05 July 2018
- 稿件说明：
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陈彩花, 王小军, 蒙丽丽等. 稀土离子掺杂LaAlO3:RE3+(RE=Eu,Tb,Sm,Tm)荧光粉的发光性能[J]. 发光学报, 2018,39(7): 923-929

CHEN Cai-hua, WANG Xiao-jun, MENG Li-li etc. Luminescent Properties of Rare Earth Ions Doped LaAlO3:RE3+ (RE=Eu, Tb, Sm, Tm) Phosphors[J]. Chinese Journal of Luminescence, 2018,39(7): 923-929
陈彩花, 王小军, 蒙丽丽等. 稀土离子掺杂LaAlO3:RE3+(RE=Eu,Tb,Sm,Tm)荧光粉的发光性能[J]. 发光学报, 2018,39(7): 923-929 DOI： 10.3788/fgxb20183907.0923.

CHEN Cai-hua, WANG Xiao-jun, MENG Li-li etc. Luminescent Properties of Rare Earth Ions Doped LaAlO3:RE3+ (RE=Eu, Tb, Sm, Tm) Phosphors[J]. Chinese Journal of Luminescence, 2018,39(7): 923-929 DOI： 10.3788/fgxb20183907.0923.

摘要

采用溶胶凝胶法合成La

AlO

：

xRE

（

=Eu，Tb，Sm，Tm）荧光粉，对样品进行热重差热（TGA-DTA）、X射线粉末衍射（XRD）、透射电镜（TEM）以及荧光光谱（PL）等表征，探讨样品的合成温度及稀土离子掺杂浓度对样品发光性能的影响。研究结果表明，当煅烧温度为800~1 200℃时，所合成样品为三方晶体结构。在紫外光激发下，掺杂离子均表现出特征的f-f电子跃迁发射，在一定掺杂浓度范围内，当Eu

、Tb

、Sm

和Tm

的掺杂浓度

值分别为0.02，0.04，0.005和0.005时，样品发光强度最大，在一定波长激发下，样品分别发射出红光、绿光、橙黄光和蓝光，Eu

-Tb

、Eu

-Sm

和Eu

-Tm

共掺杂有可能获得白光。

Abstract

A series of phosphors La

AlO

xRE

(

=Eu

Tm) were synthesized by sol-gel method. Techniques such as thermogravimetric and differential thermal analysis(TGA-DTA)

X-ray powder diffraction(XRD)

transmission electron microscopy(TEM)

photoluminescence emission and excitation spectra were used to characterize the phosphors. The results showed that the synthesized samples were pure phase with trigonal crystal structure when the calcination temperature was from 800℃ to 1 200℃. Under UV light excitation

the doped rare earth ions exhibited f-f feature level transitions. The doped ions gave the strongest emission when the doped concentration (

) of Eu

and Tm

was 0.02

0.04

0.005 and 0.005

and gave red

green

orange and blue emission

respectively. Eu

-Tb

-Sm

and Eu

-Tm

co-doped samples were likely to emit white light.

关键词

Keywords

references

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