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

Literature Information

Publication Date 2016-05-30
DOI 10.1039/C6CP02849G
Impact Factor 3.676
Authors

Yangyang Li, Junjie Guo, Xiaohui Liu, Weiping Qin


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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%.

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Source Journal

Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics
CiteScore: 5.5
Self-citation Rate: 10.3%
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Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.

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