A. Krasnikov, L. Lipińska, T. Shalapska, A. Suchocki, S. Zazubovich, Y. Zhydachevskii
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Time-resolved spectroscopy of Bi3+ Centers in Y4Al2O9 ceramics
Time-resolved emission and excitation spectra as well as luminescence decay kinetics are studied at 4.2-400 K under excitation in the 3-6 eV energy range for Bi3+ ions substituting for Y3+ ions in four nonequivalent crystal lattice sites of Y4Al2O9:Bi ceramics. The dependences of the luminescence characteristics and the relaxed excited state structure of Bi3+centers on their nearest surroundings are discussed.
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