Structural destruction quenching of down- and upconversion emission in CaF2:Yb3+, Tb3+

被引：2

作者：

Guo, Junjie ^{[1
]}

Dong, Yanhui ^{[1
]}

Li, Yangyang ^{[1
]}

Aidilibike, Tuerxun ^{[1
,2
]}

Qin, Weiping ^{[1
]}

机构：

[1] Jilin Univ, Coll Elect Sci & Engn, State Key Lab Integrated Optoelect, Changchun 130012, Jilin, Peoples R China

[2] Yili Normal Univ, Elect & Informat Engn, Yining 835000, Peoples R China

来源：

MATERIALS RESEARCH EXPRESS | 2017年 / 4卷 / 11期

基金：

中国国家自然科学基金;

关键词：

CaF2:Yb3+; Tb3+; structural destruction quenching; downconversion; upconversion; COOPERATIVE ENERGY-TRANSFER; LUMINESCENCE; YB3+; PHOSPHORS;

D O I：

10.1088/2053-1591/aa96c0

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We observed an unusual luminescent phenomenon of Yb3+ in CaF2:Yb3+, Tb3+. Upon excitation at 380 nm, the downconversion luminescence of Yb3+ ions exhibited a monotonic decreasing trend with the increase of Tb3+ concentration from 0.025 mol% to 1 mol%, which implied a unique quenching mechanism. Its inverse process, the cooperatively sensitized luminescence of Tb3+ ions showed that the upconversion emission also quenched at a low concentration (0.075 mol%) of Tb3+ ions. To explain the above emission quenching phenomenon, we further performed the optically inactive rare earth ion doping experiment and fluorescence dynamic measurements. Finally, we found that the cluster structural destruction quenching mechanism dominated the quench of the down-and upconversion emissions induced by cooperative transitions in CaF2:Yb3+, Tb3+.

引用

页数：7

共 19 条

[1] Structural destruction of cooperative luminescence - A new mechanism of fluorescence quenching [J].