Browsing by Author "Drzewiecki, A."

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    EPR Spectroscopy of the Lithium Tetraborate Glasses Doped with Ag
    (2017-05-29) Padlyak, B. V.; Tataryn, V. Ya.; Drzewiecki, A.; Padlyak, T. B.; Adamiv, V. T.; Teslyuk, I. M.; University of Zielona Góra, Institute of Physics, Division of Spectroscopy of Functional Materials; a Szafrana Str., 65-516 Zielona Góra, Poland; Vlokh Institute of Physical Optics, Department of Optical Materials; Dragomanov Str., 79005 Lviv, Ukraine; Lviv Polytechnic National University, Institute of Telecommunications, Radioelectronics and Electronic; Engineering, Department of Photonics, 1 St. Yura Sq., 79013 Lviv, Ukraine
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    Synthesis and optical spectroscopy of borate glasses, doped with terbium and dysprosium
    (Видавництво Львівської політехніки, 2012) Padlyak, B. V.; Pieprzyk, B.; Drzewiecki, A.; Adamiv, V. T.; Burak, Ya. V.; Teslyuk, I. M.
    The high optical quality glasses with CaB4O7:Tb, LiCaBO3:Tb, CaB4O7:Dy, and LiCaBO3:Dy compositions containing 0.5 and 1.0 mol. % Tb2O3 and Dy2O3 have been obtained. By electron paramagnetic resonance (EPR) and optical spectroscopy it was shown that the Tb and Dy impurities are incorporated in the CaB4O7 and LiCaBO3 glass network as Tb3+ (4f8, 7F6) and Dy3+ (4f9, 6H15/2) ions, exclusively. All observed f – f transitions of Tb3+ and Dy3+centres in optical absorption, luminescence excitation and emission spectra have been identified. Luminescence kinetic shows single exponential decay for Tb3+ and Dy3+ centres in the CaB4O7 and LiCaBO3 glasses. Lifetimes for main emitting levels of Tb3+ and Dy3+ centres in all investigated glasses were determined at T = 300 K. Spectroscopy shows that obtained glasses are promising luminescent materials.
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    Ultraviolet Photoluminescence of the Gd3+ Centres in Borate Glasses
    (2017-05-29) Padlyak, B. V.; Drzewiecki, A.; Padlyak, T. B.; Adamiv, V. T.; Teslyuk, I. M.; University of Zielona Góra, Institute of Physics, Division of Spectroscopy of Functional Materials; a Szafrana Str., 65-516 Zielona Góra, Poland; Vlokh Institute of Physical Optics, Department of Optical Materials; Dragomanov Str., 79-005 Lviv, Ukraine