Luminescence of Ce3+ multicenters in Ca2+-Mg2+-Si4+ based garnet phosphors

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Details zur Publikation

Autor(en): Gorbenko V, Zorenko T, Witkiewicz S, Paprocki K, Iskaliyeva A, Kaczmarek AM, Van Deun R, Khaidukov MN, Batentschuk M, Zorenko Y
Zeitschrift: Journal of Luminescence
Verlag: Elsevier B.V.
Jahr der Veröffentlichung: 2018
Band: 199
Seitenbereich: 245-250
ISSN: 0022-2313
Sprache: Englisch


Comparison of the luminescent properties of Ca3Sc2Si3O12:Ce and Ca2YMgScSi3O12:Ce single crystalline films (SCF) phosphors, grown by the liquid phase epitaxy method, was performed in this work. We have observed formation of the Ce3+ multicenters in Ca3Sc2Si3O12:Ce and Ca2YMgScSi3O12:Ce in the emission and excitation spectra as well as in the decay kinetics of the Ce3+ luminescence in SCFs of these garnets. Such Ce3+ multicenters possess different crystal field strength due to the inhomogeneous local surroundings of the dodecahedral positions of garnet host at the substitution of the octahedral positions by hetero-valence Mg2+ and Sc3+ ions and the tetrahedral positions by Si4+ ions. We confirm the presence of an effective energy transfer between different Ce3+ multicenters in Ce3+ doped Ca3Sc2Si3O12 and Ca2YMgScSi3O12 garnets. The positive trends in variations of the spectroscopic properties of the Ca2YMgScSi3O12:Ce garnet with respect to Ca3Sc2Si3O12:Ce garnet were observed also due to substitution of the dodecahedral sites of the garnet host by Y3+ ions and the octahedral sites by Mg2+ ions, which can be suitable for the development of new converters of white LEDs. Namely, due to the Y3+-Mg2+ doping, the luminescence spectrum of Ce3+ ions in Ca2YMgScSi3O12:Ce SCFs significantly extends in the red range in comparison with the Ca3Sc2Si3O12:Ce SCF counterpart. © 2018 Elsevier B.V.

FAU-Autoren / FAU-Herausgeber

Batentschuk, Miroslaw PD Dr.-Ing.
Lehrstuhl für Werkstoffwissenschaften (Materialien der Elektronik und der Energietechnologie)

Autor(en) der externen Einrichtung(en)
Kazimierz Wielki University in Bydgoszcz / Uniwersytet Kazimierza Wielkiego w Bydgoszcz (UKW)
Russian Academy of Sciences / Росси́йская акаде́мия нау́к (RAS)
Universiteit Gent (UGent) / Ghent University


Gorbenko, V., Zorenko, T., Witkiewicz, S., Paprocki, K., Iskaliyeva, A., Kaczmarek, A.M.,... Zorenko, Y. (2018). Luminescence of Ce3+ multicenters in Ca2+-Mg2+-Si4+ based garnet phosphors. Journal of Luminescence, 199, 245-250.

Gorbenko, V., et al. "Luminescence of Ce3+ multicenters in Ca2+-Mg2+-Si4+ based garnet phosphors." Journal of Luminescence 199 (2018): 245-250.


Zuletzt aktualisiert 2018-30-10 um 04:08