White upconversion luminescence in CaF2:Yb3+/Eu3+ powders: Via the incorporation of Y3+ ions

Yangyang Li, Junjie Guo, Xiaohui Liu, Tuerxun Aidilibike, Weiping Qin

Research output: Contribution to journalArticlepeer-review

14 Scopus citations

Abstract

White upconversion luminescence (UCL) was achieved under 980 nm excitation in the CaF2:Yb3+/Eu3+ material using Y3+ to adjust the luminescence performance. In this luminescent system, Yb3+ not only plays the role of a sensitizer of Eu3+, but also generates green fluorescence from Yb3+ dimers (2-Yb3+) by cooperative transitions in the CaF2 matrix. One of the primary colors of green corresponds to the 2-Yb3+ cooperative emission exactly. Eu3+ acts as an activator for emitting red and blue fluorescence simultaneously. Interestingly, the color of the UCL can be controlled by adjusting the doping concentration of Y3+ ions, and white UCL was realized when the concentration of Y3+ was 1%.

Original languageEnglish
Pages (from-to)16094-16097
Number of pages4
JournalPhysical Chemistry Chemical Physics
Volume18
Issue number24
DOIs
StatePublished - 2016
Externally publishedYes

Fingerprint

Dive into the research topics of 'White upconversion luminescence in CaF2:Yb3+/Eu3+ powders: Via the incorporation of Y3+ ions'. Together they form a unique fingerprint.

Cite this