Search Results - "Venevtsev, Ivan"
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Ultraviolet Luminescence of ZnO Whiskers, Nanowalls, Multipods, and Ceramics as Potential Materials for Fast Scintillators
Published in Materials (16-04-2021)“…The presented work is dedicated to the study and comparison of scintillating properties of zinc oxide samples prepared in different morphologies: whiskers,…”
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Structural, Optical, and Luminescent Properties of ZnO:Ga and ZnO:In Ceramics
Published in IEEE transactions on nuclear science (01-08-2018)“…Zinc oxide optical ceramics were prepared by the hot uniaxial pressing technique. Nominally undoped and gallium- and indium-doped ceramics were studied…”
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3
Modeling and Assessment of Afterglow Decay Curves from Thermally Stimulated Luminescence of Complex Garnets
Published in The journal of physical chemistry. A, Molecules, spectroscopy, kinetics, environment, & general theory (07-03-2019)“…Afterglow is an important phenomenon in luminescent materials and can be desired (e.g., persistent phosphors) or undesired (e.g., scintillators). Understanding…”
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Effect of Plasma Treatment on the Luminescent and Scintillation Properties of Thick ZnO Films Fabricated by Sputtering of a Hot Ceramic Target
Published in Photonics (01-12-2023)“…The paper presents the results of a comprehensive study of the structural-phase composition, morphology, optical, luminescent, and scintillation…”
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Complex Garnets: Microscopic Parameters Characterizing Afterglow
Published in Journal of physical chemistry. C (19-09-2019)“…Light yield, time response, afterglow, and thermoluminescence of Ce-doped garnet scintillators and persistent luminescent materials are controlled by a complex…”
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Temperature Quenching of Radio- and Photoluminescence of Y3(Ga,Al)5O12:Ce3+ and Gd3(Ga,Al)5O12:Ce3+ Garnet Ceramics
Published in IEEE transactions on nuclear science (01-08-2018)“…Cerium-doped mixed oxide garnets are promising luminescent materials to use as LED phosphors or scintillators for radiation detectors. In this paper,…”
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Ultrafast luminescence of Ga- and In-doped ZnO ceramics
Published in Optical materials. X (01-12-2021)“…In the presented work we compare luminescence characteristics of ZnO:Ga and ZnO:In ceramics prepared by hot uniaxial pressing method. Two types of initial…”
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A new method for unambiguous determination of trap parameters from afterglow and TSL curves connection: Example on garnets
Published in Optical materials (01-10-2017)“…Due to presence of charge carrier traps, many scintillating materials exhibit afterglow. The de-trapping mechanisms are usually studied separately via either…”
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Recent advances in the study of core-valence luminescence (cross luminescence). Review
Published in Optical materials (01-02-2023)“…The short-wavelength sub-nanosecond luminescence in BaF2 material, discovered in the early 80s, gave a new direction to research into fast scintillators and…”
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Structural and luminescent properties of YSZ-YSH based ceramics depending on Zr/Hf ratio
Published in Journal of alloys and compounds (05-12-2024)“…Samples of crystalline cubic phased ceramics based on (Zr1-хHfх)0.82Y0.17Eu0.01O1.91 with different contents of hafnium (х = 0; 0.21; 0.50; 0.77; 1) were…”
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ZnO – Yb$_2$O$_3$ composite optical ceramics: Synthesis, structure and spectral-luminescent properties
Published in Journal of the European Ceramic Society (01-02-2022)“…Zinc oxide optical ceramics containing 0 – 2 wt% ytterbium are prepared byuniaxial hot pressing of commercial oxides at 1150 and 1180 °C. The ceramics have…”
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ZnO – Yb2O3 composite optical ceramics: Synthesis, structure and spectral-luminescent properties
Published in Journal of the European Ceramic Society (01-02-2022)“…•ZnO optical ceramics containing 0–2 wt% Yb are prepared by uniaxial hot pressing.•Yb ions form a cubic Yb2O3 phase located at the ZnO grain boundaries.•The…”
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13
Exciton interaction with Ce3+ and Ce4+ ions in (LuGd)3(Ga,Al)5O12 ceramics
Published in Journal of luminescence (01-09-2021)“…Scintillators based on Ce-doped garnets are regularly co-doped with Mg2+ or Ca2+ to form Ce ions in 4+ state and reduce undesired afterglow. However overly…”
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Band Gap Variation and Trap Distribution in Transparent Garnet Scintillator Ceramics
Published in IEEE transactions on nuclear science (01-08-2020)“…This article outlines the main results of a research and development cooperation between Philips Research Eindhoven; Peter the Great St. Petersburg Polytechnic…”
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Influence of 3d Transition Metal Impurities on Garnet Scintillator Afterglow
Published in Crystal growth & design (06-05-2020)“…Garnet scintillators often suffer from undesired afterglow, the origin of which is not always well-understood. A possible origin is contamination with…”
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Sub-nanosecond Luminescence of Barium Fluoride: Challenges and Prospects
Published in St. Petersburg Polytechnical University Journal. Physics and Mathematics (01-03-2019)“…The problem of obtaining BaF2 crystals with a predominant sub-nanosecond luminescence component is considered. A detailed analysis of methods for suppressing…”
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Thermal quenching of luminescence in (Lu,Gd,Y)3(Ga, Al)5O12:Ce complex garnet ceramics at high and low temperatures
Published in Physics of complex systems (01-03-2021)“…Cerium-doped complex garnets with the general formula (Lu,Y,Gd)3,(Ga,Al)5O12:Ce are promising materials to be used in PET and CT scanners. By modifying garnet…”
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Fast, Efficient, and Radiation Hard ZnO:In Ceramic Scintillator
Published in 2019 IEEE International Conference on Electrical Engineering and Photonics (EExPolytech) (01-10-2019)“…Scintillating ceramics based on zinc oxide were prepared by the hot uniaxial pressing technique. Scintillating properties of ZnO:In ceramic are discussed and…”
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Conference Proceeding -
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Optical Properties of Composite ZnO-Er2O3-Yb2O3 Ceramics: Effect of Annealing
Published in 2022 International Conference Laser Optics (ICLO) (20-06-2022)“…Composite optical ceramics ZnO-Er 2 O 3 -Yb 2 O 3 were prepared by uniaxial hot pressing of commercial oxide powders at 1180 °C in vacuum. Their structure,…”
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Conference Proceeding