LaAlO3：Eu3+的绿色化学合成及光谱性质

王晓丽; 杨智; 何锋; 李永明; 高振华; 黄艳; 陶冶

doi:10.3788/fgxb20143502.0172

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LaAlO₃：Eu³⁺的绿色化学合成及光谱性质

材料合成及性能 | 更新时间：2020-08-12

- LaAlO₃：Eu³⁺的绿色化学合成及光谱性质
- Green Chemical Synthesis and Luminescence Properties of LaAlO₃：Eu³⁺
- 发光学报 2014年35卷第2期页码：172-177
- 作者机构：
  
  1. 云南师范大学化学化工学院,云南昆明,650500
  2. 中国科学院高能物理研究所北京同步辐射装置北京,100049
- 作者简介：
- 基金信息：
  
  云南省自然科学基金（2007B201M）资助项目()
- DOI：10.3788/fgxb20143502.0172
  中图分类号： O482.31
- 收稿日期：2013-09-17，
  
  修回日期：2013-11-16，
  
  纸质出版日期：2014-02-03
- 稿件说明：
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王晓丽, 杨智, 何锋等. LaAlO3：Eu3+的绿色化学合成及光谱性质[J]. 发光学报, 2014,35(2): 172-177

WANG Xiao-Li, YANG Zhi, HE Feng etc. Green Chemical Synthesis and Luminescence Properties of LaAlO3：Eu3+[J]. Chinese Journal of Luminescence, 2014,35(2): 172-177
王晓丽, 杨智, 何锋等. LaAlO3：Eu3+的绿色化学合成及光谱性质[J]. 发光学报, 2014,35(2): 172-177 DOI： 10.3788/fgxb20143502.0172.

WANG Xiao-Li, YANG Zhi, HE Feng etc. Green Chemical Synthesis and Luminescence Properties of LaAlO3：Eu3+[J]. Chinese Journal of Luminescence, 2014,35(2): 172-177 DOI： 10.3788/fgxb20143502.0172.

摘要

提出一种合成LaAlO

的新方法，该方法操作简单、成本低、无污染。将化学计量比的反应物La（OH）

/La

和Al（OH）

放入反应釜中，于220℃温度下水热活化处理，快速加热至900℃反应即可得到LaAlO

。XRD结果表明，所合成的LaAlO

为三方晶系。 PL结果表明，所合成的LaAlO

：Eu

的主要发射为Eu

的

磁偶极跃迁发射和

电偶极跃迁发射，红橙比随着Eu

离子掺杂量的增加而变大。在VUV-UV激发光谱中，LaAlO

：Eu

位于VUV光谱区的基质吸收很弱，而位于～315 nm的O

-Eu

的电荷迁移跃迁带（CT）则较强。

Abstract

A facile

environmentally friendly

low cost method was employed to synthesize perovskite-type LaAlO

powders. The stoichiometric mixtures of La(OH)

/La

and Al(OH)

were activated by a hydrothermal treatment in teflon-lined stainless steel autoclave at 220℃ for 3 d

and then the precursors were quickly heated to 900℃ and reacted for 5 h to obtain LaAlO

. The obtained samples were characterized by X-ray diffraction (XRD) and photoluminescence (PL) spectra. XRD result shows that LaAlO

crystal structure belongs to the rhombohedral system with the space group of

(No.167). PL results indicate the main emissions of LaAlO

：Eu

come from the magnetic dipole-dipole

transition and the electric dipole-dipole

transition. The ratio value of the intensity of Eu

transition to the intensity of Eu

transition increases with the increase of Eu

concentration. Host absorption of LaAlO

：Eu

in the VUV range is weaker than that of O

-Eu

charge transfer band in the UV range.

关键词

Keywords

references

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