Photoluminescence investigation of europium-doped alumina, titania and indium sol-gel-derived films in porous anodic alumina

R. Kudrawiec*, A. Podhorodecki, N. Mirowska, J. Misiewicz, I. Molchan, N. V. Gaponenko, A. A. Lutich, S. V. Gaponenko

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review

Abstract

Photoluminescence (PL) properties of Eu-doped xerogel films fabricated on porous anodic alumina (PAA) and flat substrates are analysed with respect to the xerogel content (TiO2, Al2O3, In 2O3) and excitation wavelength. A strong enhancement of Eu-related emission in the broad UV range of the excitation has been found for the three xerogel systems. However, the enhancement factor is not simple to interpret, it possesses rather a complex nature. We have proposed that the increase of PL intensity is composed of two components. The first component is associated with an improvement of the energy transfer from the host xerogel matrix to lanthanide ions. The second one is evoked by multiple scattering of exciting light in the pore channels. This additional path of the excitation and energy transfer improves essentially the PL of lanthanide ions. Moreover, in periodic matrix of PAA the emission of lanthanide is redistributed by angle contributing into PL enhancement.

Original languageEnglish
Pages (from-to)53-56
Number of pages4
JournalMaterials Science and Engineering: B
Volume105
Issue number1-3
DOIs
Publication statusPublished - 15 Dec 2003
EventEMRS 2003 Symposium J, Rare Earth Doped Materials for Photonic - Strasbourg, Austria
Duration: 10 Jun 200313 Jun 2003

Keywords

  • Europium
  • Photoluminescence
  • Porous anodic alumina
  • Sol-gel

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