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Y2Ti2O7:Tm3+的制备及其发光性能研究
Synthesis and Luminescence Properties of Y2Ti2O7:Tm3+ Phosphor
- 发光学报 2015年36卷第3期 页码：267-271
- 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：国家自然科学基金(11464017)资助项目()
DOI：10.3788/fgxb20153603.0267
中图分类号： O482.31纸质出版日期：2015-3-3，
收稿日期：2015-1-1，
修回日期：2015-1-16，
扫 描 看 全 文
游维雄, 孙珅磊, 肖宗梁等. Y<sub>2</sub>Ti<sub>2</sub>O<sub>7</sub>:Tm<sup>3+</sup>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 Y<sub>2</sub>Ti<sub>2</sub>O<sub>7</sub>:Tm<sup>3+</sup> Phosphor[J]. Chinese Journal of Luminescence, 2015,36(3): 267-271
游维雄, 孙珅磊, 肖宗梁等. Y<sub>2</sub>Ti<sub>2</sub>O<sub>7</sub>:Tm<sup>3+</sup>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 Y<sub>2</sub>Ti<sub>2</sub>O<sub>7</sub>:Tm<sup>3+</sup> 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
3+
掺杂浓度的Y
2
Ti
2
O
7
:
x
Tm (
x
=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
3+
的
1
D
2
3
F
4
跃迁。1 000 ℃烧结的Y
2
Ti
2
O
7
: 0.01Tm
3+
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
3+
掺杂浓度的增大先升高后降低
在Tm
3+
摩尔分数为1%时达到最大
即出现了浓度猝灭现象。
Abstract
Y
2
Ti
2
O
7
:
x
Tm(
x
=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
3+
. Blue emissions centered at 456 nm
corresponding to
1
D
2
3
F
4
transition of Tm
3+
are detected under 361 nm excitation. The best luminescence performance is derived when the sintering temperature is 1 000 ℃ for Y
2
Ti
2
O
7
:0.01Tm
3+
. Furthermore
the emission intensity at 456 nm increases and then decreases with the increasing of Tm
3+
concentration. The most intense emission is obtained when the mole fraction of Tm
3+
is 1%
which indicates that the concentration quenching happens when the mole fraction of Tm
3+
exceeds 1%.
关键词
Y2Ti2O7:Tm3+荧光粉溶胶-凝胶法浓度猝灭
Keywords
Y2Ti2O7:Tm3+sol-gel methodconcentration quenching
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