Funct. Mater. 2013; 20 (3): 279-283.
Formation and luminescent properties of MeBr2—Eu (Me =Sr , Ba ) microcrystals dispersed in NaBr matrix
[1]Ukrainian Academy of Printing, 19 Pidgolosko St., 79020 Lviv, Ukraine
[2]I.Franko National University of Lviv, 8 Kyryla i Mefodiya St., 79005 Lviv, Ukraine
[3]HASYLAB at DESY, 85 Notkestraβe, 22607 Hamburg, Germany
[4]Institute for Scintillation Materials, STC "Institute for Single Crystals", National Academy of Sciences of Ukraine, 60 Lenin Ave., 61001 Kharkiv, Ukraine
The formation of europium doped MeBr2 microcrystals Me =Sr , Ba ) embedded in NaBr matrix is revealed in NaBr—MeBr2—Eu crystalline system. The spectral-luminescent properties of embedded MeBr2—Eu microcrystals are studied upon the synchrotron radiation excitation. The mechanisms of luminescence excitation of europium centers in NaBr—MeBr2—Eu crystalline system and features of Me2+ and Eu2+ impurity ions aggregation processes in NaBr matrix are discussed.
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