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八面体结构纳米CeO2∶Er3+的合成及发光性质
Preparation and Luminescence Properties of Octahedral CeO2∶Er3+ Nanophosphor
- 发光学报 2020年41卷第4期 页码：386-391
- 作者机构：
1. 大连民族大学 物理与材料工程学院, 国家民委新能源与稀土资源利用重点实验室, 辽宁省光敏材料与器件重点实验室,辽宁 大连,116600
2. 中国科学院长春光学精密机械与物理研究所 发光学及应用国家重点实验室, 吉林 长春 130033
- 作者简介：
- 基金信息：国家自然科学基金（11974069）();辽宁省自然科学基金（20170540200，20180550070）();兴辽英才计划（XLYC1902113）();中央高校
DOI：10.3788/fgxb20204104.0386
中图分类号： O614.23+2;O614.43+2纸质出版日期：2020-4-5，
网络出版日期：2020-3-2，
收稿日期：2020-1-19，
修回日期：2020-2-23，
扫 描 看 全 文
张慧敏, 丛妍, 佟尧等. 八面体结构纳米CeO<sub>2</sub>∶Er<sup>3+</sup>的合成及发光性质[J]. 发光学报, 2020,41(4): 386-391
ZHANG Hui-min, CONG Yan, TONG Yao etc. Preparation and Luminescence Properties of Octahedral CeO<sub>2</sub>∶Er<sup>3+</sup> Nanophosphor[J]. Chinese Journal of Luminescence, 2020,41(4): 386-391
张慧敏, 丛妍, 佟尧等. 八面体结构纳米CeO<sub>2</sub>∶Er<sup>3+</sup>的合成及发光性质[J]. 发光学报, 2020,41(4): 386-391 DOI： 10.3788/fgxb20204104.0386.
ZHANG Hui-min, CONG Yan, TONG Yao etc. Preparation and Luminescence Properties of Octahedral CeO<sub>2</sub>∶Er<sup>3+</sup> Nanophosphor[J]. Chinese Journal of Luminescence, 2020,41(4): 386-391 DOI： 10.3788/fgxb20204104.0386.
摘要
采用水热合成法制备了八面体结构纳米CeO
2
∶Er
3+
，并研究了稀土Er
3+
离子掺杂对CeO
2
纳米晶的结构以及发光特性的影响。所合成的CeO
2
纳米晶具有八面体结构，结晶完好，粒度均匀。XRD和拉曼光谱测试结果表明所制备的CeO
2
纳米晶为面心立方萤石结构，稀土Er
3+
离子的掺杂在基质晶格中产生了氧空位缺陷，并产生了晶格畸变。在980 nm激光激发下产生了稀土Er
3+
离子绿色（
2
H
11/2
，
4
S
3/2
4
I
15/2
）、红色（
4
F
9/2
4
I
15/2
）和近红外（
4
I
11/2
，
4
I
13/2
4
I
15/2
）发光。随着稀土Er
3+
离子掺杂浓度的变化，样品的发光光谱在可见光和近红外光范围产生了不同的猝灭浓度，这是由于掺杂浓度变化对Er
3+
-Er
3+
之间的交叉驰豫过程产生了影响，Er
3+
的能级布居变化引起了发光特性的改变。
Abstract
Octahedral CeO
2
∶Er
3+
nanophosphors with uniform crystallinity and fine crystalline were prepared using hydrothermal method. The structural and emission properties were investigated. The XRD and Raman spectra indicated that the as-prepared CeO
2
∶Er
3+
samples were cubic fluorite structure of CeO
2
phase
and the oxygen vacancies were produced due to the substitution of Er
3+
for Ce
4+
. Green (
2
H
11/2
4
S
3/2
4
I
15/2
)
red (
4
F
9/2
4
I
15/2
) and NIR (
4
I
11/2
4
I
13/2
4
I
15/2
) emissions under 980 nm laser diode excitation were also investigated
and they were strong affected by the doping concentration of Er
3+
. Different quenching concentrations are observed in the visible and NIR emission spectra
which is due to the alteration of populating channels in the cross relaxation processes of Er
3+
.
关键词
CeO2∶Er3+纳米晶水热合成法发光
Keywords
CeO2∶Er3+nanophosphorhydrothermal methodluminescence
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