Počet záznamů: 1  

Luminescence and energy transfer processes in Ce.sup.3+./sup. activated (Gd,Tb).sub.3./sub.Al.sub.5./sub.O.sub.12./sub. single crystalline films

  1. 1.
    0476807 - FZU-D 2018 RIV NL eng J - Článek v odborném periodiku
    Bartosiewicz, Karol - Babin, Vladimir - Mareš, Jiří A. - Beitlerová, Alena - Zorenko, Yu. - Iskaliyeva, A. - Gorbenko, V. - Bryknar, Z. - Nikl, Martin
    Luminescence and energy transfer processes in Ce3+ activated (Gd,Tb)3Al5O12 single crystalline films.
    Journal of Luminescence. Roč. 188, Aug (2017), s. 60-66. ISSN 0022-2313
    Grant CEP: GA ČR GA16-15569S; GA MŠk LO1409
    GRANT EU: European Commission(XE) 316906 - LUMINET
    Institucionální podpora: RVO:68378271
    Klíčová slova: gadolinium terbium aluminum garnets * Ce3+ * energy transfer * luminescence * single crystalline flms
    Kód oboru RIV: BH - Optika, masery a lasery
    Obor OECD: Optics (including laser optics and quantum optics)
    Impakt faktor: 2.732, rok: 2017

    The luminescence and scintillation properties of gadolinium terbium aluminium garnet single crystalline films, Gd3-xTbxAl5O12, doped with Ce3+ are investigated as a function of the Gd/Tb ratio with the aim of an improved understanding of the energy transfer processes between Ce3+ and Tb3+ ions in the aluminium garnet hosts. Upon replacing the Gd3+ by Tb3+, the crystal field splitting for the 5d energy level of Ce3+ does not change significantly, due to comparable sizes of the Gd3+ and Tb3+ cations. Temperature dependence of the decay time of Tb3+ and Ce3+ luminescence confirms an efficient energy transfer from the Tb3+ to Ce3+ and provides a qualitative understanding of this process. Furthermore, bidirectional energy transfer processes between the Ce3+ and Tb3+ are revealed. Scintillation decays under alpha-particles excitation show the presence of the fast and slow sub-microsecond components.
    Trvalý link: http://hdl.handle.net/11104/0273224