温度变化对Eu/TiO2纳米材料的结构和光学性能的影响

曾庆光; 乐天; 邹华勇; 赖斐; 丁泽军; 张增明

doi:10.3788/fgxb20113204.0358

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温度变化对Eu/TiO₂纳米材料的结构和光学性能的影响

材料合成及性能研究 | 更新时间：2020-08-12

- 温度变化对Eu/TiO₂纳米材料的结构和光学性能的影响
- Temperature Effect on The Structure and Optical Properties of Eu/TiO₂ Nanomaterials
- 发光学报 2011年32卷第4期页码：358-362
- 作者机构：
  
  1. 中国科学技术大学物理系
  2. 五邑大学应用物理与材料学院, 广东江门 529020
- 作者简介：
- 基金信息：
  
  国家自然科学基金(11004153)();广东省自然科学基金(10152902001000009)();广东省科技计划项目(2009B030803015)资助项目()
- DOI：10.3788/fgxb20113204.0358
  中图分类号： O482.31
- 收稿日期：2010-09-13，
  
  修回日期：2010-10-21，
  
  网络出版日期：2011-04-22，
  
  纸质出版日期：2011-04-22
- 稿件说明：
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曾庆光, 乐天, 邹华勇, 赖斐, 丁泽军, 张增明. 温度变化对Eu/TiO2纳米材料的结构和光学性能的影响[J]. 发光学报, 2011,32(4): 358-362

ZENG Qing-guang, LE Tian, ZOU Hua-yong, LAI Fei, DING Ze-jun, ZHANG Zeng-ming. Temperature Effect on The Structure and Optical Properties of Eu/TiO2 Nanomaterials[J]. Chinese Journal of Luminescence, 2011,32(4): 358-362
曾庆光, 乐天, 邹华勇, 赖斐, 丁泽军, 张增明. 温度变化对Eu/TiO2纳米材料的结构和光学性能的影响[J]. 发光学报, 2011,32(4): 358-362 DOI： 10.3788/fgxb20113204.0358.

ZENG Qing-guang, LE Tian, ZOU Hua-yong, LAI Fei, DING Ze-jun, ZHANG Zeng-ming. Temperature Effect on The Structure and Optical Properties of Eu/TiO2 Nanomaterials[J]. Chinese Journal of Luminescence, 2011,32(4): 358-362 DOI： 10.3788/fgxb20113204.0358.

摘要

研究了温度(包括退火温度

测试温度)变化对Eu

掺杂TiO

纳米颗粒的结构和光学性能的影响。结果表明:随着退火温度的升高

纳米颗粒的尺寸变大

发光增强;而且当退火温度升到973 K时

纳米颗粒的形状由球状变成方形

并开始发生相变;此后Eu

离子发光峰的强度随着温度升高明显减弱

与此同时生成了一个新的宽荧光峰(峰位在796 nm)。随着测试温度的降低

离子发光强度逐渐减弱

宽荧光峰的强度明显增强。对上述现象的机理进行了讨论。

Abstract

The temperature (including annealing temperature and measurement temperature) effects on the structure and optical properties of Eu/TiO

nanomaterials were studied. It was found that the particle size is increase with the annealing temperatures. The emission intensity of the Eu

ions increases with annealing temperature

but decreases when the annealing temperature is over 973 K. Meanwhile

a broad emission band ascribed to defect states associated with Ti

ions and oxygen vacancies is intensified with the increasing of annealing temperature. The fluorescence spectra at low measurement temperatures show that the emission intensity of the broad emission band is enhanced while the emission from Eu

ions is weaken with the decrease of annealing temperature. The mechanism was discussed in this paper.

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Keywords

references

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