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Showing 1 to 8 of 8 for “"oxygen defect"”.
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Controlling properties of functional oxides by tuning oxygen defect chemistry
Oxygen defects are essential building blocks for properties and functionalities of oxides, including electrical conductivity, magnetism, ferroelectricity as well as catalytic and electrocatalytic activity. Therefore, fundamental understanding of how to tune the oxygen defect chemistry is essential …
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Oxygen defect engineering for silicon solar cell applications : process design and modeling
… lowers efficiencies of silicon solar cells are oxygen ring defects that are incorporated into the material during growth. These defects decrease overall cell efficiencies by around 20% (rel.) resulting in a yield loss of about 1/4 h of each monocrystalline silicon ingot. To control the oxygen …
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Compensation engineering for silicon solar cells
… after long-term illumination by the boron-oxygen recombination centre. To allow accurate modelling of upgraded-metallurgical silicon solar cells, we propose a parameterization of these fundamental properties of compensated silicon. We study the light-induced lifetime degradation in p-type …
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Compensation engineering for silicon solar cells
… after long-term illumination by the boron-oxygen recombination centre. To allow accurate modelling of upgraded-metallurgical silicon solar cells, we propose a parameterization of these fundamental properties of compensated silicon. We study the light-induced lifetime degradation in p-type …
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Defect equilibria and electrode kinetics in Prx̳Ce1̳-̳x̳O2̳-̳[̳d̳e̳l̳t̳a̳]̳ mixed conducting thin films : an in-situ optical and electrochemical investigation
An improved fundamental understanding of oxygen defect equilibria and transport kinetics in oxides is essential for achieving enhanced performance and longevity in many oxide-based practical applications. The ability to diagnose a material's behavior in a thin film structure under operating …
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A Study on Catalytic Sites Contiguity in Cu-ZnO-Based Catalysts for CO2 Hydrogenation to Methanol
… Cu surface. Mechanism study indicated that the oxygen-defect ZnO single layers and ZnO nanoparticles on Cu favored MeOH synthesis. The extended ALD exposure time led to an increase in the number of MeOH-forming sites contiguity but did not change selectivity significantly.
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Anion manipulation in perovskite-related materials
… = 3.8775(3) Å). Fluorine insertion into the oxygen defect superstructure manganite Sr\(_2\)MnO\(_{3.5+x}\) has been shown by TEM to result in two levels of fluorination. In the higher fluorine content sections, the fluorine anions displace oxygen anions from their apical positions into the …
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Anti-inflammatory Effects and Biodistribution of Cerium Oxide Nanoparticles
… antioxidants. Their redox nature is due to oxygen defects in the lattice structure, which are more abundant at the nanoscale. Reactive oxygen species (ROS) are pro-oxidants whose presence is increased during periods of inflammation in the body. ROS damage tissues and cellular function by …