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Issue 41, 2017
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Lifetime nanomanometry – high-pressure luminescence of up-converting lanthanide nanocrystals – SrF2:Yb3+,Er3+

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Abstract

Anti-Stokes luminescence of up-converting nanocrystals SrF2:Yb3+,Er3+ can be used as a high pressure optical sensor alternative to the ruby fluorescence-scale. In nanocrystalline SrF2:Yb3+,Er3+, high pressure reversibly shortens the emission lifetimes nearly linearly up to 5.29 GPa at least. Its advantage is the use of NIR (≈980 nm) radiation, highly penetrable for many materials. The shortening of up-conversion lifetimes has been attributed mainly to the changes in energy transfer rates, caused by decreased interatomic distances and increased overlap integrals between 4f electrons and the valence shells of ligand ions. The origin of high-pressure effects on the luminescence intensity, band ratio and their spectral position has been explained by the increased interactions and distortions of the crystal-field symmetry around the emitting ions in the compressed structure.

Graphical abstract: Lifetime nanomanometry – high-pressure luminescence of up-converting lanthanide nanocrystals – SrF2:Yb3+,Er3+

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Publication details

The article was received on 17 Jun 2017, accepted on 20 Sep 2017 and first published on 21 Sep 2017


Article type: Paper
DOI: 10.1039/C7NR04353H
Citation: Nanoscale, 2017,9, 16030-16037
  • Open access: Creative Commons BY license
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    Lifetime nanomanometry – high-pressure luminescence of up-converting lanthanide nanocrystals – SrF2:Yb3+,Er3+

    M. Runowski, J. Marciniak, T. Grzyb, D. Przybylska, A. Shyichuk, B. Barszcz, A. Katrusiak and S. Lis, Nanoscale, 2017, 9, 16030
    DOI: 10.1039/C7NR04353H

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