M
Margit Zacharias
Researcher at University of Freiburg
Publications - 301
Citations - 13457
Margit Zacharias is an academic researcher from University of Freiburg. The author has contributed to research in topics: Photoluminescence & Silicon. The author has an hindex of 55, co-authored 295 publications receiving 12689 citations. Previous affiliations of Margit Zacharias include University of Rochester & Technion – Israel Institute of Technology.
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Interplay of bimolecular and Auger recombination in photoexcited carrier dynamics in silicon nanocrystal/silicon dioxide superlattices.
Tomáš Chlouba,František Trojánek,J. Laube,Daniel Hiller,Sebastian Gutsch,Margit Zacharias,Petr Malý +6 more
TL;DR: Results of investigating carrier recombination in silicon nanocrystal/silicon dioxide superlattices showed that under high pump intensities (high photoexcited carrier densities) the bimolecular process dominated the recombination.
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Preparation of a - GeO x :H alloys: Vibrational, optical, and structural properties
Margit Zacharias,Jürgen Bläsing +1 more
TL;DR: In this paper, the preparation and systematic investigation of amorphous GeO:H alloys are described, and the integrated absorption is analyzed in dependence on the oxygen content, where the peak position of the Ge-O-Ge stretching band shifts from 750 to 810
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Photoluminescence properties of erbium-doped structures of silicon nanocrystals in silicon dioxide matrix
V. Yu. Timoshenko,Denis M. Zhigunov,Pavel K. Kashkarov,O. A. Shalygina,S. A. Teterukov,R. J. Zhang,Margit Zacharias,Minoru Fujii,Sh. Hayashi +8 more
TL;DR: In this article, the photoluminescence of Si nanocrystals (nc-Si) in erbium-doped amorphous silicon dioxide was studied and it was shown that the energy of excitons confined in nc-Si of 2-5nm sizes is efficiently transferred to Er 3+ ions in surrounding SiO 2 and a strong PL line at 1.5μm appears.
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Engineered high aspect ratio vertical nanotubes as a model system for the investigation of catalytic methanol synthesis over Cu/ZnO.
Firat Güder,Elias Frei,Umut M. Kücükbayrak,Andreas Menzel,Ralf Thomann,R. Luptak,Bernd Hollaender,Ingo Krossing,Margit Zacharias +8 more
TL;DR: A novel process for the fabrication of patterned, vertically aligned high aspect ratio 1D nanostructures on Si that can be used as an engineered model catalyst to investigate the morphological effects of ZnO catalyst support and perform 70 times better in activating CO2 than the industrial catalyst.
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Silicon nanocrystals-based electroluminescent resistive switching device
J. L. Frieiro,J. López-Vidrier,O. Blázquez,Deniz Yazicioglu,Sebastian Gutsch,Jan Valenta,Sergi Hernández,Margit Zacharias,Blas Garrido +8 more
TL;DR: In this paper, a silicon nanocrystal multilayers (Si NC MLs) were used as an active material for resistive switching (RS) devices, taking advantage of their outstanding optical properties.