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Y2O3 ∶ Eu3+纳米棒的微乳液-微波法 制备、表征与发光性能
Synthesis, Characterization and Photoluminescence of Y2O3∶Eu3+ Nanorods by the Combination of Microemulsion and Microwave Heating
- 发光学报 2009年30卷第2期 页码：233-238
- 作者机构：
1. 玉林师范学院 化学与生物系,广西 玉林,537000
2. 广西师范大学化学 化工学院,广西 桂林,541004
3. 光电材料与技术国家重点实验室 中山大学化学与化学工程学院,广东 广州,510275
- 作者简介：
- 基金信息：
DOI：
中图分类号： O482.31收稿日期：2008-08-25，
修回日期：1900-01-02，
网络出版日期：2009-04-30，
纸质出版日期：2009-04-30
- 稿件说明：
移动端阅览
庞 起, 覃利琴, 韩健鹏, 等. Y2O3 ∶ Eu3+纳米棒的微乳液-微波法 制备、表征与发光性能[J]. 发光学报, 2009,30(2):233-238.
PANG Qi, QIN Li-qin, HAN Jian-peng, et al. Synthesis, Characterization and Photoluminescence of Y2O3∶Eu3+ Nanorods by the Combination of Microemulsion and Microwave Heating[J]. Chinese journal of luminescence, 2009, 30(2): 233-238.
庞 起, 覃利琴, 韩健鹏, 等. Y2O3 ∶ Eu3+纳米棒的微乳液-微波法 制备、表征与发光性能[J]. 发光学报, 2009,30(2):233-238. DOI：
PANG Qi, QIN Li-qin, HAN Jian-peng, et al. Synthesis, Characterization and Photoluminescence of Y2O3∶Eu3+ Nanorods by the Combination of Microemulsion and Microwave Heating[J]. Chinese journal of luminescence, 2009, 30(2): 233-238. DOI：
摘要
用简单的微乳液-微波法合成大小和形貌可控的Y
2
O
3
: Eu
3+
纳米棒晶体。XRD结果表明
所制备样品为Y
2
O
3
: Eu
3+
纯相
属于体心立方晶系。TEM结果表明
随着水乳比ω
0
从5变化到35时
粒子发光粉的形状由纳米颗粒状变为纳米棒
纳米棒的直径约为30~50 nm
纳米棒长约为200~300 nm。激发光谱和发射光谱分析表明
最大的激发带是位于254 nm的Eu
3+
-O
2-
电荷迁移带。最大发射峰位于611 nm
属于Eu
3+
的特征发射。Y
2
O
3
: Eu
3+
纳米发光粉的发光强度随着ω
0
的增加而增强。发光寿命分析表明Y
2
O
3
: Eu
3+
纳米棒中Eu
3+
的发光寿命为2.03 ms。在阴极射线发光真空装置中测得的I-V曲线表明Y
2
O
3
: Eu
3+
纳米棒薄膜的启动电压仅1 300 V。同时
在2 000 V外加电压下可以清楚地观察到Y
2
O
3
: Eu
3+
纳米棒的阴极射线发光为Eu
3+
离子的特征红光。
Abstract
Europium (Ⅲ)-doped yttrium oxide (Y
2
O
3
∶Eu
3+
) nanoparticles and nanorods were prepared by a novel combination approach
microemulsion-microwave heating. X-ray diffraction (XRD) analysis confirmed the formation of Y
2
O
3
∶Eu
3+
phase. TEM results indicated that the synthesized samples show olive-ball-like morphology with 20~100 nm size or nanorod morphology about 30~50 nm in width and 200~300 nm in length. The nano-Y
2
O
3
∶Eu
3+
samples emit much strong red light due to the
5
D
0
-
7
F
2
transitions of Eu
3+
ions under near UV excitation
especially around 254 nm. The key excitation band at around 254 nm was originated from the Eu
3+
-O
2-
charge transfer. The PL intensity increases along with the increase in the particle size and the ratio of water to surfactant ω
0
.The fluorescence decay time of the Y
2
O
3
∶Eu
3+
nanorod is about 2.03 ms. The I-V curve of cathodoluminescence for the Y
2
O
3
∶Eu
3+
nanorod deposited on ITO glass showed that the startup voltage was only about 1 300 V.
关键词
Keywords
references
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