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27 results on '"Dominec, Filip"'

5. Donor-Acceptor Pairs Recombination as the Origin of the Emission Shift In InGaN/GaN Scintillator Heterostructures Doped with Zn

Author

Hájek, František, primary, Jarý, Vítězslav, additional, Hubáček, Tomáš, additional, Dominec, Filip, additional, Hospodková, Alice, additional, Kuldová, Karla, additional, Oswald, Jiří, additional, Pangrác, Jiří, additional, Vaněk, Tomáš, additional, Buryi, Maksym, additional, Ledoux, Gilles, additional, and Dujardin, Christophe, additional

Published
2023
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6. Changes to Material Phase and Morphology Due to High-Level Molybdenum Doping of ZnO Nanorods: Influence on Luminescence and Defects

Author

Buryi, Maksym, primary, Babin, Vladimir, additional, Neykova, Neda, additional, Wang, Yu-Min, additional, Remeš, Zdeněk, additional, Ridzoňová, Katarína, additional, Dominec, Filip, additional, Davydova, Marina, additional, Drahokoupil, Jan, additional, Chertopalov, Sergii, additional, Landová, Lucie, additional, and Pop-Georgievski, Ognen, additional

Published
2023
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8. Relation between Ga Vacancies, Photoluminescence, and Growth Conditions of MOVPE-Prepared GaN Layers

Author

Hospodková, Alice, primary, Čížek, Jakub, additional, Hájek, František, additional, Hubáček, Tomáš, additional, Pangrác, Jiří, additional, Dominec, Filip, additional, Kuldová, Karla, additional, Batysta, Jan, additional, Liedke, Maciej O., additional, Hirschmann, Eric, additional, Butterling, Maik, additional, and Wagner, Andreas, additional

Published
2022
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11. The Effect of Be Co‐Doping on Luminescence Properties of Gd3Al3Ga2O12:Ce Glass Ceramics.

Author

Tratsiak, Yauhen, Trusova, Ekateryna, Buryi, Maksym, Babin, Vladimir, Dominec, Filip, Hájek, František, and Malashkevich, Georgii

Subjects
LUMINESCENCE, GADOLINIUM, CERAMICS, RADIOLUMINESCENCE, GLASS, ELECTRON traps
Abstract

The glass‐ceramics (GC) of gadolinium aluminum gallium garnets with the expected composition of Gd3Al3Ga2O12:Ce and Gd3Al3Ga2O12:Ce,Be (GAGG:Ce and GAGG:Ce,Be, respectively) are fabricated by crystallization from the Gd2O3–Al2O3–Ga2O3–CeO2–SiO2–BeO (Gd:Ga:Al ratio is close to 3:2:3) glasses. The influence of Be2+ co‐doping (including doping level) on the luminescent properties of the GAGG is demonstrated. In particular, Be co‐doping results in the suppression of the Ce3+‐related radioluminescence (RL) and as a consequence, the light yield is lowered as well. The conclusion is made that Be2+ creates effective electron or hole trapping centers. [ABSTRACT FROM AUTHOR]

Published
2022
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14. Advancement toward ultra-thick and bright InGaN/GaN structures with a high number of QWs

Author

Hubáček, Tomáš, primary, Hospodková, Alice, additional, Kuldová, Karla, additional, Oswald, Jiří, additional, Pangrác, Jiří, additional, Jarý, Vitězslav, additional, Dominec, Filip, additional, Slavická Zíková, Markéta, additional, Hájek, František, additional, Hulicius, Eduard, additional, Vetushka, Alexej, additional, Ledoux, Gilles, additional, Dujardin, Christophe, additional, and Nikl, Martin, additional

Published
2019
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16. Bulk Magnetic Terahertz Metamaterials Based On Dielectric Microspheres

Author

Mounaix, Patrick, Kadlec, C., Elissalde, Catherine, Dominec, Filip, Nemec, H., Sindler, Michal, Kuzel, P., Laboratoire de l'intégration, du matériau au système (IMS), Centre National de la Recherche Scientifique (CNRS)-Institut Polytechnique de Bordeaux-Université Sciences et Technologies - Bordeaux 1, Institute of Physics [Prague], Czech Academy of Sciences [Prague] (CAS), Institut de Chimie de la Matière Condensée de Bordeaux (ICMCB), and Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut Polytechnique de Bordeaux-Université de Bordeaux (UB)

Subjects
[PHYS]Physics [physics], [SPI]Engineering Sciences [physics], ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2016

18. InGaN/GaN Structures: Effect of the Quantum Well Number on the Cathodoluminescent Properties.

Author

Hospodková, Alice, Hubáček, Tomáš, Oswald, Jiří, Pangrác, Jiří, Kuldová, Karla, Hývl, Matěj, Dominec, Filip, Ledoux, Gilles, and Dujardin, Christophe

Subjects
GALLIUM nitride, QUANTUM wells, CATHODOLUMINESCENCE, CRYSTAL structure, CRYSTAL defects
Abstract

In this work we compare luminescence results obtained on InGaN/GaN multiple quantum well (QW) structures with 10 and 30 QWs. The aim is to increase the intensity of faster blue QW emission and decrease the luminescence of the QW defect band, showing a slower luminescence decay time, which is undesired for fast scintillator applications. We demonstrate that increasing the number of InGaN QWs is an efficient method to reach this goal. The luminescence improvement of the sample with higher number of QWs is explained by the influence of the increased size of V‐pits with increased QW number. Thinner QWs on the side wall of V‐pits serve as barriers which separate carriers from dislocations penetrating through the V‐pit centre, supressing thus the non‐radiative and radiative recombination on defects. Based on cathodoluminescence (CL) results, the scintillator structure design is discussed. Scintillator structures with higher number of QWs can take advantage of both, improved luminescence efficiency and thicker active region. [ABSTRACT FROM AUTHOR]

Published
2018
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23. The Effect of Be Co‐Doping on Luminescence Properties of Gd3Al3Ga2O12:Ce Glass Ceramics

Author

Tratsiak, Yauhen, Trusova, Ekateryna, Buryi, Maksym, Babin, Vladimir, Dominec, Filip, Hájek, František, and Malashkevich, Georgii

Abstract

The glass‐ceramics (GC) of gadolinium aluminum gallium garnets with the expected composition of Gd3Al3Ga2O12:Ce and Gd3Al3Ga2O12:Ce,Be (GAGG:Ce and GAGG:Ce,Be, respectively) are fabricated by crystallization from the Gd2O3–Al2O3–Ga2O3–CeO2–SiO2–BeO (Gd:Ga:Al ratio is close to 3:2:3) glasses. The influence of Be2+co‐doping (including doping level) on the luminescent properties of the GAGG is demonstrated. In particular, Be co‐doping results in the suppression of the Ce3+‐related radioluminescence (RL) and as a consequence, the light yield is lowered as well. The conclusion is made that Be2+creates effective electron or hole trapping centers. The article is about the glass‐ceramics form of Gd3Al3Ga2O12:Ce and Gd3Al3Ga2O12:Ce,Be, gadolinium aluminum gallium garnets. Be2+co‐doping affects the luminescent properties of Ce3+in these materials by the suppression of light yield. Moreover, the decay time of the photoluminescence (PL) decreases upon beryllium content. These observations lead to the conclusion of the effective beryllium‐based charge trapping centers’ existence.

Published
2022
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25. Bulk rigid terahertz metamaterials based on dielectric microspheres

Author

Mounaix, Patrick, Kadlec, C., Elissalde, Catherine, Dominec, Filip, Nemec, H., Kuzel, P., Laboratoire de l'intégration, du matériau au système (IMS), Centre National de la Recherche Scientifique (CNRS)-Institut Polytechnique de Bordeaux-Université Sciences et Technologies - Bordeaux 1, Institute of Physics [Prague], Czech Academy of Sciences [Prague] (CAS), Institut de Chimie de la Matière Condensée de Bordeaux (ICMCB), and Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut Polytechnique de Bordeaux-Université de Bordeaux (UB)

Subjects
[PHYS]Physics [physics], ComputingMilieux_MISCELLANEOUS
Abstract

International audience

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