Enhanced luminescence of europium in porous anodic alumina films

N. V. Gaponenko, I. S. Molchan, A. A. Lutich, S. V. Gaponenko

    Research output: Contribution to journalConference articlepeer-review

    Abstract

    Xerogels doped with lanthanides embedded in mesoporous matrices are known to exhibit intensive lanthanides-related photoluminescence (PL). In this paper we report on novel features peculiar to porous anodic alumina and Eu-doped xerogels embedded therein. For Eu-doped titania xerogel fabricated in a single spin-on step Eu PL increases with the thickness of porous anodic alumina ranging from 0.5 to 5 p.m. The structure Eu-doped titania xerogel/porous anodic alumina reveal anisotropy of luminescence at 617 nm (5D07F2 transitions of Eu3+) with a pronounced maximum towards the channels of the anodic alumina pores. Furthermore, a membrane of porous anodic alumina reveals strong anisotropy of light scattering. Development of these anisotropic properties for the purpose of further PL enhancement of optically active inclusions incorporated in mesoscopic channels of anodic alumina is discussed.

    Original languageEnglish
    Pages (from-to)251-256
    Number of pages6
    JournalSolid State Phenomena
    Volume97-98
    DOIs
    Publication statusPublished - 2004
    EventProceedings of the 6th International Conference on Self-Formation Theory and Applications - Vilnius, Lithuania
    Duration: 26 Nov 200328 Nov 2003

    Keywords

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

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