Novel Sol-Gel Precursors for Thin Mesoporous Eu3+-Doped Silica Coatings as Efficient Luminescent Materials

Author(s)

Andrea Feinle, Flavie Lavoie-Cardinal, Johanna Akbarzadeh, Herwig Peterlik, Matthias Adlung, Claudia Wickleder, Nicola Hüsing

Abstract

Europium(III) ions containing mesoporous silica coatings have been prepared via a solvent evaporation-induced self-assembly (EISA) approach of different single-source precursors (SSPs) in the presence of Pluronic P123 as a structure-directing agent, using the spin-coating process. A deliberate tailoring of the chemical composition of the porous coatings with various Si:Eu ratios was achieved by processing mixtures of tetraethylorthosilicate (TEOS) and Eu3+-coordinated SSPs. Small-angle X-ray scattering (SAXS) and transmission electron microscopy (TEM) analyses demonstrate that the thin metal oxide-doped silica coatings consist of a porous network with a short-range order of the pore structure, even at high europium(III) loadings. Furthermore, luminescence properties were investigated at different temperatures and different degrees of Eu3+ contents. The photoluminescence spectra clearly show characteristic emission peaks corresponding to the D-5(0) -> F-7(J) (J = 0-5) transitions resulting in a red luminescence visible by the eyes, although the films have a very low thickness (150-200 nm).

Organisation(s)

Dynamics of Condensed Systems

External organisation(s)

Paris-Lodron Universität Salzburg, Universität Siegen

Journal

Chemistry of Materials

Volume

24

Pages

3674-3683

No. of pages

10

ISSN

0897-4756

DOI

https://doi.org/10.1021/cm300996j

Publication date

2012

Peer reviewed

Yes

Austrian Fields of Science 2012

103009 Solid state physics, 103015 Condensed matter, 103018 Materials physics

Portal url

https://ucrisportal.univie.ac.at/en/publications/novel-solgel-precursors-for-thin-mesoporous-eu3doped-silica-coatings-as-efficient-luminescent-materials(e436c99c-649a-488e-bf66-c83cfbfe7cf0).html