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Photoluminescence of Nanophosphors CaAl2O4:Eu3+ in a Wide Interval of Temperatures and Levels of Laser Excitation
https://doi.org/10.47612/0514-7506-2022-89-4-505-510
Abstract
We study the spectra of excitation and photoluminescence of CaAl2O4:Eu3+ nanoluminophores in a wide interval of temperatures and laser excitation levels from 40 to 2.3 · 103 kW/cm2. The photoluminescence spectra of CaAl2O4:Eu3+ have the shape of narrow lines and are located in the region 550–750 nm of the visible spectrum. An extremely high stability of the position and shape of the photoluminescence spectra of nanopowders under investigation is established at high levels of laser excitation up to 2.3 · 103 kW/cm2 at a constant luminescence efficiency up to 60 kW/cm2. A further increase in the excitation level leads to a reversible drop in the photoluminescence efficiency. The threshold of an irreversible drop in the luminescence efficiency has not been reached.
About the Authors
O. B. Tagiev
Institute of Physics of the National Academy of Sciences of Azerbaijan; Baku Branch of Lomonosov Moscow State University
Azerbaijan
Azerbaijan
Baku
B. D. Urmanov
B. I. Stepanov Institute of Physics of the National Academy of Sciences of Belarus
Belarus
Belarus
Minsk
M. S. Leonenia
B. I. Stepanov Institute of Physics of the National Academy of Sciences of Belarus
Belarus
Belarus
Minsk
G. P. Yablonskii
B. I. Stepanov Institute of Physics of the National Academy of Sciences of Belarus
Belarus
Belarus
Minsk
H. J. Ibrahimov
Institute of Petrochemical Processes of National Academy of Sciences of Azerbaijan
Azerbaijan
Azerbaijan
Baku
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Review
For citations:
Tagiev O.B., Urmanov B.D., Leonenia M.S., Yablonskii G.P., Ibrahimov H.J. Photoluminescence of Nanophosphors CaAl2O4:Eu3+ in a Wide Interval of Temperatures and Levels of Laser Excitation. Zhurnal Prikladnoii Spektroskopii. 2022;89(4):505-510. (In Russ.) https://doi.org/10.47612/0514-7506-2022-89-4-505-510
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