Synthesis and Size-dependent Luminescence Properties of Y2O3: Eu3+ Nanospheres

QI Ye; ZHANG Jin-su; CHEN Bao-jiu; SUN Jia-shi; LI Xiang-ping; XU Sai; CHENG Li-hong

doi:10.3788/fgxb20173802.0139

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Synthesis and Size-dependent Luminescence Properties of Y₂O₃: Eu³⁺ Nanospheres

更新时间：2020-08-12

- Synthesis and Size-dependent Luminescence Properties of Y₂O₃: Eu³⁺ Nanospheres
- Chinese Journal of Luminescence Vol. 38, Issue 2, Pages: 139-146(2017)
- 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：
  
  Supported by National Natural Science Foundation of China(11374044,11104024);Natural Science Foundation of Liaoning Province(2014025010);Fundamental Research Funds for The Central Universities (3132016118)
- DOI：10.3788/fgxb20173802.0139
  CLC： O482.31
- Received：02 August 2016，
  
  Revised：29 August 2016，
  
  Published：05 February 2017
- 稿件说明：
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齐野, 张金苏, 陈宝玖等. Y2O3:Eu3+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 Y2O3: Eu3+ Nanospheres[J]. Chinese Journal of Luminescence, 2017,38(2): 139-146
齐野, 张金苏, 陈宝玖等. Y2O3:Eu3+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 Y2O3: Eu3+ 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

：Eu

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

：Eu

纳米球的生长过程进行了研究。根据Judd-Ofelt理论，利用Eu

的发射光谱和荧光衰减等数据，计算了

能级的辐射跃迁速率和荧光分支比，计算得到Y

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

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

：Eu

纳米球样品的活化能分别为0.201，0.193，0.200 eV。

Abstract

doped with Eu

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

:Eu

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

:Eu

nanoparticles was studied. The refractive index of Y

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

fluorescence emissions was analyzed. The thermal quenching behavior of

fluorescence followed well the Crossover model. The activation energy of Y

:Eu

nanosphere phosphors with different sizes was obtained from the nonlinear fitting on the temperature quenching of luminescence intensity. The activation energy of Y

:Eu

nanosphere phosphors with the size of 80

40 nm are 0.201

0.193

0.200 eV

respectively.

关键词

Keywords

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