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

(2018) JOURNAL OF LUMINESCENCE. 199. p.245-250
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NANOLUX: Singly and doubly Ce3+ and Eu2+ doped silicate garnet nanoceramic phosphors for high power white light emitting diodes
Abstract
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.
Keywords
Luminescence, Single crystalline films, Ca2+-Mg2+-Si4+ based garnets, Ce3+ dopant, LED converters, BROAD-BAND LUMINESCENCE, LIGHT-EMITTING-DIODES, WHITE, IONS, GA, AL, SC

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Citation

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Chicago
Gorbenko, V, T Zorenko, S Witkiewicz, K Paprocki, A Iskaliyeva, Anna Kaczmarek, Rik Van Deun, MN Khaidukov, M Batentschuk, and Yu Zorenko. 2018. “Luminescence of Ce3+ Multicenters in Ca2+ -Mg2+ -Si4+ Based Garnet Phosphors.” Journal of Luminescence 199: 245–250.
APA
Gorbenko, V., Zorenko, T., Witkiewicz, S., Paprocki, K., Iskaliyeva, A., Kaczmarek, A., Van Deun, R., et al. (2018). Luminescence of Ce3+ multicenters in Ca2+ -Mg2+ -Si4+ based garnet phosphors. JOURNAL OF LUMINESCENCE, 199, 245–250.
Vancouver
1.
Gorbenko V, Zorenko T, Witkiewicz S, Paprocki K, Iskaliyeva A, Kaczmarek A, et al. Luminescence of Ce3+ multicenters in Ca2+ -Mg2+ -Si4+ based garnet phosphors. JOURNAL OF LUMINESCENCE. 2018;199:245–50.
MLA
Gorbenko, V, T Zorenko, S Witkiewicz, et al. “Luminescence of Ce3+ Multicenters in Ca2+ -Mg2+ -Si4+ Based Garnet Phosphors.” JOURNAL OF LUMINESCENCE 199 (2018): 245–250. Print.
@article{8558524,
  abstract     = {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.},
  author       = {Gorbenko, V and Zorenko, T and Witkiewicz, S and Paprocki, K and Iskaliyeva, A and Kaczmarek, Anna and Van Deun, Rik and Khaidukov, MN and Batentschuk, M and Zorenko, Yu},
  issn         = {0022-2313},
  journal      = {JOURNAL OF LUMINESCENCE},
  keywords     = {Luminescence,Single crystalline films,Ca2+-Mg2+-Si4+ based garnets,Ce3+ dopant,LED converters,BROAD-BAND LUMINESCENCE,LIGHT-EMITTING-DIODES,WHITE,IONS,GA,AL,SC},
  language     = {eng},
  pages        = {245--250},
  title        = {Luminescence of Ce3+ multicenters in Ca2+ -Mg2+ -Si4+ based garnet phosphors},
  url          = {http://dx.doi.org/10.1016/j.jlumin.2018.03.058},
  volume       = {199},
  year         = {2018},
}

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