Effective Enhancement of Red to Green Ratio in NaGdF4:Yb3+/Ho3+/Ce3+ Nanoparticle System

被引：0

作者：

Zhang L.-G. ^{[1
,2
,3
]}

Zhao S.-L. ^{[1
,2
]}

Xu Z. ^{[1
,2
]}

Ma L.-H. ^{[3
]}

Li C.-P. ^{[3
]}

Xue H.-D. ^{[3
]}

Wang F.-L. ^{[3
]}

Liu P. ^{[3
]}

机构：

[1] Key Laboratory of Luminescence and Optical Information(Beijing Jiaotong University), Ministry of Education, Beijing

[2] Institute of Optoelectronics Technology, Beijing Jiaotong University, Beijing

[3] School of Science, Hebei University of Architecture, Zhangjiakou

来源：

Faguang Xuebao/Chinese Journal of Luminescence | 2019年 / 40卷 / 07期

基金：

中国国家自然科学基金;

关键词：

Ce ions; NaGdF[!sub]4[!/sub; Upconvensition;

D O I：

10.3788/fgxb20194007.0829

中图分类号：

学科分类号：

摘要：

The red upconversion luminescence of lanthanide-doped fluoride nanocrystals has great potential applications in the fields of color display, biological imaging, biomedicine, anti-counterfeiting, especially the small size red upconversion nanocrystals have important application in biomedicine and biological imaging. In this work, a series of NaGd0.78-xF4:Yb/Ho/Cex(x=0%, 5%, 10%, 15%, 20%, 30%) upconversion fluorescent nanocrystals were successfully synthesized by solvothermal process. The phase structure, morphology and fluorescence properties of the products were characterized and studied by using X ray powder diffractometer(XRD), transmission electron microscopy(TEM), scanning electron microscopy(SEM) and fluorescence spectrometer. The product has uniform morphology and good dispersibility, showing hexagonal phase. The particle size is about 15-40 nm. With the increase of Ce3+ doping, the particle size increases. Under the excitation wavelength of 980 nm, the upconversion of Ho3+ red light increased significantly, the green light weakened with the increase of concentration of Ce3+ from 0% to 30%, the ratio of red light and green light increased from 0.122 4 to 3.219 3, increased by nearly 26 times, which realized the conversion of green to red. Finally, the possible upconversion emission mechanism between Ho3+ and Ce3+ ions is discussed in detail. © 2019, Science Press. All right reserved.

引用

页码：829 / 834

页数：5

共 19 条

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