Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5399137 | Journal of Luminescence | 2016 | 5 Pages |
Abstract
Herein, Eu3+ doped Gd2Ti2O7 nanoparticles were tested for application in ratiometric luminescence thermometry. It is shown that two combinations of emissions: one that uses two emissions of Eu3+ ions and one that uses one emission of Eu3+ ions and trap emission of Gd2Ti2O7 provide thermometry over the 303-423Â K temperature range with relative sensitivities between 0.14%Â Kâ1 and 0.95%Â Kâ1. Thermometry based on two Eu3+ emissions from 5D0 to 5D1 levels has a higher relative sensitivity, but lower absolute sensitivity than thermometry based on one Eu3+ emission and trap emission of Gd2Ti2O7. The tested material is prepared by Pechini-type polymerized complex route and is composed of agglomerated nanoparticles of ~30-50Â nm in size with pure-phase cubic structure (space group Fd-3m) as evidenced from electron microscopy and X-ray diffraction measurements.
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Authors
Vesna Lojpur, Sanja Äulubrk, Miroslav D. DramiÄanin,