| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 7902088 | Journal of Non-Crystalline Solids | 2014 | 8 Pages |
Abstract
PL measurements of the Er3 + emission at 1.54 μm were performed, on hollow and dense SiO2 microspheres, for different Er3 +/Yb3 + ratios, ranging from 1:3 to 1:10 mol%. Upconversion was observed in all samples, ordered by efficiency for the studied Er,Yb environments as: glass-ceramic (NaYF4 environment) â«Â hollow SiO2 microspheres (Er,Yb fluoride crystalline environment) > dense SiO2 microspheres (Er,Yb oxide crystalline environment). X-ray excited optical luminescence (XEOL) confirmed the Er green upconversion results.
Related Topics
Physical Sciences and Engineering
Materials Science
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Authors
L.M. Fortes, M.C. Gonçalves, J.C. Pereira, F. D'Acapito,