Synthesis and Luminescence Properties of Y2Ti2O7:Tm3+ Phosphor

YOU Wei-xiong; SUN Shen-lei; XIAO Zong-liang; LAI Feng-qin; JIANG Hong-hui; WANG Chun-xia

doi:10.3788/fgxb20153603.0267

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Synthesis and Luminescence Properties of Y₂Ti₂O₇:Tm³⁺ Phosphor

更新时间：2020-08-12

- Synthesis and Luminescence Properties of Y₂Ti₂O₇:Tm³⁺ Phosphor
- Chinese Journal of Luminescence Vol. 36, Issue 3, Pages: 267-271(2015)
- 作者机构：
  
  江西理工大学材料科学与工程学院,江西赣州,341000
- 作者简介：
- 基金信息：
- DOI：10.3788/fgxb20153603.0267
  CLC： O482.31
- Received：01 January 2015，
  
  Revised：16 January 2015，
  
  Published：03 March 2015
- 稿件说明：
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游维雄, 孙珅磊, 肖宗梁等. Y2Ti2O7:Tm3+的制备及其发光性能研究[J]. 发光学报, 2015,36(3): 267-271

YOU Wei-xiong, SUN Shen-lei, XIAO Zong-liang etc. Synthesis and Luminescence Properties of Y2Ti2O7:Tm3+ Phosphor[J]. Chinese Journal of Luminescence, 2015,36(3): 267-271
游维雄, 孙珅磊, 肖宗梁等. Y2Ti2O7:Tm3+的制备及其发光性能研究[J]. 发光学报, 2015,36(3): 267-271 DOI： 10.3788/fgxb20153603.0267.

YOU Wei-xiong, SUN Shen-lei, XIAO Zong-liang etc. Synthesis and Luminescence Properties of Y2Ti2O7:Tm3+ Phosphor[J]. Chinese Journal of Luminescence, 2015,36(3): 267-271 DOI： 10.3788/fgxb20153603.0267.

摘要

采用溶胶-凝胶法(Sol-gel)制备了不同烧结温度和Tm

掺杂浓度的Y

Tm (

=0.005

0.01

0.03

0.05)荧光粉

分别采用X射线衍射分析仪(XRD)、透射电子显微镜(TEM)和荧光光谱仪对样品的晶型结构、形貌以及发光性能进行了表征。XRD结果表明

所得到的样品为单一立方相烧绿石结构。样品在361 nm紫外光激发下发射出蓝光

其峰值波长为456 nm

对应于Tm

的

跃迁。1 000 ℃烧结的Y

: 0.01Tm

样品具有较好的发光性能。样品在456 nm处的相对发光强度随Tm

掺杂浓度的增大先升高后降低

在Tm

摩尔分数为1%时达到最大

即出现了浓度猝灭现象。

Abstract

Tm(

=0.005

0.01

0.03

0.05) phosphors were prepared by sol-gel method and sintered at different temperatures. The structure

morphologies

and luminescence properties of samples were characterized by X-ray diffraction (XRD)

TEM

and fluorescence spectrophotometer

respectively. The XRD patterns indicate that the structure of samples belongs to pyrochlore structure

and is not changed by the doping of Tm

. Blue emissions centered at 456 nm

corresponding to

transition of Tm

are detected under 361 nm excitation. The best luminescence performance is derived when the sintering temperature is 1 000 ℃ for Y

:0.01Tm

. Furthermore

the emission intensity at 456 nm increases and then decreases with the increasing of Tm

concentration. The most intense emission is obtained when the mole fraction of Tm

is 1%

which indicates that the concentration quenching happens when the mole fraction of Tm

exceeds 1%.

关键词

Keywords

references

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