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ABSTRACT: The formation of LaBr3-Ce microcrystals 1–10 μm in size dispersed in a NaBr matrix has been revealed in a NaBr-LaBr3(1%)-CeBr3(0.05%) crystal by electron microprobe analysis and luminescence spectroscopy. The spectral-luminescence and luminescence-kinetic
characteristics of the NaBr-LaBr3(1%)-CeBr3(0.05%) crystal under optical and X-ray excitations have been investigated. The spectral-luminescence properties of LaBr3:Ce microcrystals dispersed in an NaBr matrix are identical to those in the bulk analogs. The mechanisms of energy transfer
to Ce3+ ions during crystal excitation in the ranges of transparency and fundamental absorption of NaBr and LaBr3 matrices are discussed.
Optics and Spectroscopy 04/2012; 109(3):352-357. · 0.61 Impact Factor
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ABSTRACT: Spectral-kinetic luminescent characteristics of CsI-BaI2 (1 mol%) crystal have been studied in the 1.55–16 eV energy range at T = 10 and 295 K. The nature of luminescent centers in CsI-BaI2 has been clarified on the basis of photoluminescence excitation spectra and decay kinetics characteristics analysis.
physica status solidi (b) 12/2009; 247(2):393 - 397. · 1.32 Impact Factor
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ABSTRACT: Crystalline materials of the compositions Cs4SnBr6, CsSnBr3, and CsBr-Sn (0.1 mol %) are investigated using x-ray diffraction and luminescent methods. The formation of the CsSnBr3 phase is found to occur in metastable Cs4SnBr6 and CsBr-Sn. It is established that the CsSnBr3 crystalline phase in the Cs4SnBr6 metastable phase is a more stable compound as compared to the CsSnBr3 bulk crystal, which undergoes oxidation and hydration in air.
Physics of the Solid State 07/2008; 50(8):1473-1476. · 0.71 Impact Factor
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ABSTRACT: Formation of CsSnBr3 microcrystals in CsBr:Sn (1 mol.%) crystals is revealed after the long-term annealing (t = 100 h, T = 200 C). Luminescent-kinetic pa-rameters of CsBr:Sn (1 mol.%) crystals are measured using the excitation with synchrotron radiation. The process of energy transfer from the host to the aggre-gates is discussed.
Ukrainian Journal of Physical Optics. 01/2008;
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Radiation Measurements 42(2007)4-5,697-700.
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Phys. Solid State 50(2008),1473-1476.
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Phys. Status Solidi B 247(2010)2,393-397.
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Funct. Mater. 17(2010)3,294-299.
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Opt. Spectrosc. 109(2010)3,352-357.
