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Y2O3:Eu3+纳米球的可控合成及尺寸效应所影响的发光性质
Synthesis and Size-dependent Luminescence Properties of Y2O3: Eu3+ Nanospheres
- 发光学报 2017年38卷第2期 页码：139-146
- 作者机构：
大连海事大学 物理系, 辽宁 大连 116026
- 作者简介：
- 基金信息：国家自然科学基金（11374044，11104024）;辽宁省自然科学基金（2014025010）;中央高校基本科研业务费专项基金（3132016118）资助项目
DOI：10.3788/fgxb20173802.0139
中图分类号： O482.31纸质出版日期：2017-2-5，
收稿日期：2016-8-2，
修回日期：2016-8-29，
扫 描 看 全 文
齐野, 张金苏, 陈宝玖等. Y<sub>2</sub>O<sub>3</sub>:Eu<sup>3+</sup>纳米球的可控合成及尺寸效应所影响的发光性质[J]. 发光学报, 2017,38(2): 139-146
QI Ye, ZHANG Jin-su, CHEN Bao-jiu etc. Synthesis and Size-dependent Luminescence Properties of Y<sub>2</sub>O<sub>3</sub>: Eu<sup>3+</sup> Nanospheres[J]. Chinese Journal of Luminescence, 2017,38(2): 139-146
齐野, 张金苏, 陈宝玖等. Y<sub>2</sub>O<sub>3</sub>:Eu<sup>3+</sup>纳米球的可控合成及尺寸效应所影响的发光性质[J]. 发光学报, 2017,38(2): 139-146 DOI： 10.3788/fgxb20173802.0139.
QI Ye, ZHANG Jin-su, CHEN Bao-jiu etc. Synthesis and Size-dependent Luminescence Properties of Y<sub>2</sub>O<sub>3</sub>: Eu<sup>3+</sup> Nanospheres[J]. Chinese Journal of Luminescence, 2017,38(2): 139-146 DOI： 10.3788/fgxb20173802.0139.
摘要
采用均匀沉淀法，通过改变稀土离子与尿素的量比成功合成了粒径分别为80，55，40 nm的Y
2
O
3
：Eu
3+
纳米球样品。通过X射线衍射（XRD）、场发射扫描电镜（FE-SEM）和发光光谱对不同尺寸纳米球的晶体结构、微观形貌和发光性质做了分析，对Y
2
O
3
：Eu
3+
纳米球的生长过程进行了研究。根据Judd-Ofelt理论，利用Eu
3+
的发射光谱和荧光衰减等数据，计算了
5
D
0
7
F
J
能级的辐射跃迁速率和荧光分支比，计算得到Y
2
O
3
基质材料的折射率为1.80以及不同粒径样品的光学跃迁强度参数。最后分析了
5
D
0
能级荧光发射与温度之间的依赖关系，结果证明了荧光温度猝灭行为符合Crossover过程，并通过阿伦尼乌斯公式非线性拟合获得了激活能，粒径为80，55，40 nm的Y
2
O
3
：Eu
3+
纳米球样品的活化能分别为0.201，0.193，0.200 eV。
Abstract
Y
2
O
3
doped with Eu
3+
nanosphere phosphors with different sizes were synthesized
via
urea homogeneous precipitation method. By changing the molar ratio of rare earth to urea precipitant
the uniform spherical Y
2
O
3
:Eu
3+
nanoparticles with the sizes of 80
55 and 40 nm were obtained. The phase
morphology and luminescence property of as-prepared samples were characterized by means of X-ray diffraction (XRD)
filed emission scanning electron microscopy (FE-SEM) and photoluminescence spectra
respectively. The growth process of Y
2
O
3
:Eu
3+
nanoparticles was studied. The refractive index of Y
2
O
3
was deduced to be about 1.80. Meanwhile
the radiative transition rates
fluorescence branching ratios and J-O parameters were calculated by using the emission spectra and fluorescence decay. Finally
the temperature dependence of
5
D
0
fluorescence emissions was analyzed. The thermal quenching behavior of
5
D
0
fluorescence followed well the Crossover model. The activation energy of Y
2
O
3
:Eu
3+
nanosphere phosphors with different sizes was obtained from the nonlinear fitting on the temperature quenching of luminescence intensity. The activation energy of Y
2
O
3
:Eu
3+
nanosphere phosphors with the size of 80
55
40 nm are 0.201
0.193
0.200 eV
respectively.
关键词
Y2O3:Eu3+纳米球发光性质Judd-Ofelt理论
Keywords
Y2O3:Eu3+ nanoparticlesluminescence propertiesJudd-Ofelt theory
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