Оксидні матеріали електронної техніки – отримання, властивості, застосування.
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Item Deep Levels in β-Ga2O3 Single Crystals Doped with Mg2+ Ions(2017-05-29) Luchechko, A.; Vasyltsiv, V.; Kostyk, L.; Tsvetkova, O.; Department of Sensor and Semiconductor Electronics, Ivan Franko National University of Lviv; Tarnanavskogo Str., 79017 Lviv, Ukraine; luchechko@electronics.lnu.edu.uaItem Recombination Luminescence in Ca3-xCdxGa2Ge3O12 Garnets Doped with Eu3+ Ions(2017-05-29) Kostyk, L.; Luchechko, A.; Novosad, S.; Panasyuk, M.; Rudko, M.; Tsvetkova, O.; Ivan Franko Lviv National University, 107 Tarnavskogo Str., 79017 Lviv, Ukraine; kostyk@electronics.lnu.edu.uaItem The luminescence of PbWO4:Tb and CdWO4:Tb,Li crystals at synchrotron excitation(Видавництво Львівської політехніки, 2012) Novosad, S.; Kostyk, L.; Novosad, I.; Luchechko, A.The luminescence of PbWO4:Tb3+ and CdWO4:Tb,Li crystals is effectively excited by the synchrotron radiation in the long-wavelength fundamental absorption edge region and in the region of photon multiplication. In the case of PbWO4:Tb3+ excitation of using photons with energy 14.1 eV the weak recombination luminescence of terbium impurity is observed against the background of matrix emission at 300 K. The luminescence intensity of PbWO4:Tb3+ increases about an order of magnitude, when the temperature is decreased to 8 K, at the same time the luminescence characteristic for PbWO4 crystals is observed. It was shown, that the spectrum of lowtemperature matrix luminescence of PbWO4:Tb is approximated by elementary bands with maxima near 2.93, 2.61, 2.34 and 1.9 eV. The luminescence spectra of CdWO4:Tb,Li at 10 K may be presented by the superposition of elementary matrix bands 2.07, 2.47 and 2.73 eV and narrow bands (lines) associated with f-f-transitions in Tb3+ ions. The nature of emission bands is discussed.Item The luminescence of PbWO4:Tb and CdWO4:Tb,Li crystals at synchrotron excitation(Видавництво Львівської політехніки, 2012) Novosad, S.; Kostyk, L.; Novosad, I.; Luchechko, A.The luminescence of PbWO4:Tb3+ and CdWO4:Tb,Li crystals is effectively excited by the synchrotron radiation in the long-wavelength fundamental absorption edge region and in the region of photon multiplication. In the case of PbWO4:Tb3+ excitation of using photons with energy 14.1 eV the weak recombination luminescence of terbium impurity is observed against the background of matrix emission at 300 K. The luminescence intensity of PbWO4:Tb3+ increases about an order of magnitude, when the temperature is decreased to 8 K, at the same time the luminescence characteristic for PbWO4 crystals is observed. It was shown, that the spectrum of lowtemperature matrix luminescence of PbWO4:Tb is approximated by elementary bands with maxima near 2.93, 2.61, 2.34 and 1.9 eV. The luminescence spectra of CdWO4:Tb,Li at 10 K may be presented by the superposition of elementary matrix bands 2.07, 2.47 and 2.73 eV and narrow bands (lines) associated with f-f-transitions in Tb3+ ions. The nature of emission bands is discussed.Item Luminescence and luminescence kinetics of Gd3Ga5O12 polycrystals doped with Cr3+ and Pr3+(Видавництво національного університету “Львівська політехніка”, 2009) Mahlik, S.; Kukliński, B.; Grinberg, M.; Kostyk, L.; Tsvetkova, O.Item Luminescence properties of Ca3-xCdxGa2Ge3O12 garnet system doped by Eu3+ ions(Видавництво національного університету „Львівська політехніка”, 2009) Kostyk, L.; Luchechko, A.; Tsvetkova, O.; Kuklinski, B.; Vas’kiv, A.