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Inkjet Fabrication of highly efficient luminescent Eu-Doped ZrO2 Nanostructures

Abstract

We have demonstrated for the first time an inkjet fabrication of highly efficient luminescent structures based on Eu-doped ZrO2 nanocrystals (3.4±0.3 nm), with refractive index close to the one of the material bulk. The nano particles were sythetysed using a nonhydrolytic method in benzyl alcohol where the particles were post treated using acetic acid, leading to formation of a stable colloid. It was shown that the acetic acid's non-polar methyl group is responsible for its penetration through the hydrophobic layer all the way through to the surface of the ZrO2, leading to the cleavage of the Zr-OCH2C6H5 bond and the formation of surface acetate species and a concomitant decomposition of the zirconia superlattice. Hereby we show a new and efficient universal ink production throuh a multi step process - starting from solvothermal synthesis, dispersion of nanocrystals in water, and adaptation of the rheological parameters of the resulting sols. Eventually, we were able to obtain inks that we used for the production of.optical coatings, monolayer luminescent-protected holography and anti-counterfeiting printing. There structures, obtained at room temperature through inkjet printing, present dense xerogel structures with high optical transparency, high refractive index and more efficient luminescence compared to the non-homogeneous structures produced as a mixture of rare-earth elements and nanocrystals.

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Publication details

The article was received on 04 May 2017, accepted on 28 Jul 2017 and first published on 31 Jul 2017


Article type: Paper
DOI: 10.1039/C7NR03175K
Citation: Nanoscale, 2017, Accepted Manuscript
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    Inkjet Fabrication of highly efficient luminescent Eu-Doped ZrO2 Nanostructures

    A. Furasova, V. Ivanovski, A. V. Yakovlev, V. Milichko, V. V. Vinogradov and A. Vinogradov, Nanoscale, 2017, Accepted Manuscript , DOI: 10.1039/C7NR03175K

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