Ca0.88TiO3：0.12Eu3+红色荧光粉的结构与发光性能

吴义炳; 孙卓; 阮凯斌; 刘银春; 张洪

doi:10.3788/fgxb20143508.0932

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Ca_0.88TiO₃：0.12Eu³⁺红色荧光粉的结构与发光性能

材料合成及性能 | 更新时间：2020-08-12

- Ca_0.88TiO₃：0.12Eu³⁺红色荧光粉的结构与发光性能
- Structural and Optical Properties of Ca_0.88TiO₃：0.12Eu³⁺ Red Phosphors
- 发光学报 2014年35卷第8期页码：932-938
- 作者机构：
  
  1. 福建农林大学机电工程学院,福建福州,350002
  2. 华东师范大学物理系纳光电集成与先进装备教育部工程研究中心上海,200062
- 作者简介：
- 基金信息：
  
  福建省自然科学基金（2011JO5122）();福建省教育厅科研项目（JB12067）资助()
- DOI：10.3788/fgxb20143508.0932
  中图分类号： O482.31
- 收稿日期：2014-04-09，
  
  修回日期：2014-04-24，
  
  网络出版日期：2014-04-30，
  
  纸质出版日期：2014-08-03
- 稿件说明：
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吴义炳, 孙卓, 阮凯斌等. Ca0.88TiO3：0.12Eu3+红色荧光粉的结构与发光性能[J]. 发光学报, 2014,35(8): 932-938

WU Yi-bing, SUN Zhuo, RUAN Kai-bin etc. Structural and Optical Properties of Ca0.88TiO3：0.12Eu3+ Red Phosphors[J]. Chinese Journal of Luminescence, 2014,35(8): 932-938
吴义炳, 孙卓, 阮凯斌等. Ca0.88TiO3：0.12Eu3+红色荧光粉的结构与发光性能[J]. 发光学报, 2014,35(8): 932-938 DOI： 10.3788/fgxb20143508.0932.

WU Yi-bing, SUN Zhuo, RUAN Kai-bin etc. Structural and Optical Properties of Ca0.88TiO3：0.12Eu3+ Red Phosphors[J]. Chinese Journal of Luminescence, 2014,35(8): 932-938 DOI： 10.3788/fgxb20143508.0932.

摘要

采用固相反应法制备Ca

0.88

TiO

：0.12Eu

（CTE）红色荧光粉，研究了CTE荧光粉的结构与发光性能。XRD结果表明，不同退火温度下的CTE荧光粉皆为钙钛矿结构，其晶粒尺寸随退火温度的升高而增大，1 300℃退火时晶相最佳，与SEM观察的结果相一致。CTE荧光粉的激发光谱由350~500 nm范围内的一系列窄带吸收峰组成，其中的最强峰位于398 nm 附近;发射谱主要包含595 nm和616 nm两个峰，属于Eu

离子跃迁发光。616 nm发射峰明显强于595 nm发射峰，说明Eu

是处在无反演对称中心的格位。CTE 荧光粉的发光随着退火温度的升高而增强，1 300℃时达到最大值，这可归因于其结晶状况的改善。另外，CTE荧光粉还具有色纯度高与热稳定性好等优点，这些将使CTE成为一种潜在的用于近紫外激发的白光LED红色荧光粉材料。

Abstract

Red phosphors of Ca

0.88

TiO

:0.12Eu

(CTE) were synthesized by solid-state method

and their structure and morphology were studied. XRD results show that CTE phosphors sintered at different temperature exhibit orthorhombic structure. The average grain size increases with the increase of sintering temperature

and their crystallization sintered at 1 300℃ is the best

which is consistent with the SEM results. CTE phosphors can be efficiently excited by near-ultraviolet light of 398 nm

and emit intensive red light with peaks around 594 nm and 616 nm corresponding to the transition

and

of Eu

. The peak around 616 nm is stronger than that of 594 nm

showing that Eu

ions site at lattice without the center of inversion symmetry. The emission intensity of CTE phosphor increases with the sintering temperature

and is the highest when the sintering temperature is 1 300℃ due to higher crystallinity. Furthermore

CTE phosphors have very good thermal stability and high color purity

implying the potential to be a promising red phosphor in white light emitting diodes.

关键词

Keywords

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