We have studied the effect of doping with Eu2+ and Ce3+ ions on the photoluminescence (PL) of BaGa2Se4 crystals in the temperature range 77–300 K. We have established that the broad bands with maxima at wavelengths 456 nm and 506 nm observed in the photoluminescence spectra of BaGa2Se4:Ce3+ crystals are due to intracenter transitions 5d → 2F7/2 and 5d →2F5/2 of the Ce3+ ions, while the broad photoluminescence band with maximum at 521 nm in the spectrum of BaGa2Se4:Eu2+ is associated with 4f6 5d → 4f7 (8S7/2) transitions of the Eu2+ ion. We show that in BaGa2Se4:Eu2+,Ce3+ crystals, excitation energy is transferred from the Ce3+ ions to the Eu2+ ions.
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Translated from Zhurnal Prikladnoi Spektroskopii, Vol. 77, No. 1, pp. 124–128, January–February, 2010.
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Tagiev, B.G., Abushov, S.A. & Tagiev, O.B. luminescence of BaGa2Se4 crystals activated by Eu2+ and Ce3+ ions. J Appl Spectrosc 77, 115–119 (2010). https://doi.org/10.1007/s10812-010-9301-0
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DOI: https://doi.org/10.1007/s10812-010-9301-0