Synthesis of hexagonal phase Gd2O2CO3:Yb3+, Er3+ upconversion nanoparticles via SiO2 coating and Nd3+ doping

被引：10

作者：

Ge, Wen ^{[1
]}

Li, Zhiang ^{[1
]}

Lei, Zhiwei ^{[1
]}

Chen, Tong ^{[1
]}

Fu, Zhengping ^{[1
,3
]}

Peng, Ranran ^{[1
,3
]}

Liu, Min ^{[1
,3
]}

Lu, Yalin ^{[1
,2
,3
,4
]}

机构：

[1] Univ Sci & Technol China, Dept Mat Sci & Engn, CAS Key Lab Mat Energy Convers, Hefei 230026, Peoples R China

[2] Univ Sci & Technol China, Hefei Natl Lab Phys Sci Microscale, Hefei 230026, Peoples R China

[3] Univ Sci & Technol China, Synerget Innovat Ctr Quantum Informat & Quantum P, Hefei 230026, Peoples R China

[4] US Air Force Acad, Dept Phys, Laser & Opt Res Ctr, Colorado Springs, CO 80840 USA

来源：

CRYSTENGCOMM | 2015年 / 17卷 / 30期

基金：

中国国家自然科学基金;

关键词：

QUANTUM DOTS; UPCONVERTING NANOPARTICLES; NANOCRYSTALS; LUMINESCENCE; PARTICLES; CRYSTAL; DECOMPOSITION; ENHANCEMENT; EXCITATION; STABILITY;

D O I：

10.1039/c5ce00869g

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

By SiO2 shell coating and Nd3+ doping, layer-structured hexagonal phase Gd2O2CO3:Yb3+, Er3+ nanoparticles were synthesized successfully through a homogeneous precipitation method. The detailed mechanism was investigated and the results indicate that the SiO2 shell and Nd3+ doping ions can effectively prevent hexagonal phase Gd2O2CO3 from decomposing into cubic phase Gd2O3 during heat treatment, because the SiO2 shell limits the diffusion of CO2 gas and the Nd3+ doping increases the decomposition temperature of Gd2O2CO3. Compared with non-layer-structured GdVO4:20%Yb3+, 2%Er3+, 4%Nd3+ particles with similar diameters and morphologies and lower phonon energies, layer-structured Gd2O2CO3:20%Yb3+, 2%Er3+, 4%Nd3+/SiO2 hexagonal phase particles show much a stronger upconversion emission, suggesting that layer-structured materials are more appropriate as upconversion hosts. Furthermore, the paramagnetic properties of Gd2O2CO3:Yb3+, Er3+, Nd3+/SiO2 nanoparticles were also demonstrated.

引用

页码：5702 / 5709

页数：8

共 39 条

[1] Phase stability study of the pseudobinary system Gd2O2CO3-Nd2O2CO3 (420 A°C aparts per thousandcurrency sign T aparts per thousandcurrency sign 850 A°C, P=1 atm. CO2) [J].