Search for dissertations about: "oxygen vacancy"
Showing result 11 - 15 of 35 swedish dissertations containing the words oxygen vacancy.
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11. On hydrogen point defects in perovskite oxides
Abstract : Oxides based on the perovskite structure exhibit a surprisingly large diversity in materials properties and are found in many different applications, several related to clean energy technologies, such as solar cells, batteries and fuel cells. Many properties in materials are the result of lattice imperfections, commonly denoted \emph{defects}, and much effort is devoted to fine tuning materials properties through controlling the defects therein. READ MORE
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12. Nanocrystalline Tungsten Trioxide Thin Films : Structural, Optical and Electronic Characterization
Abstract : This thesis concerns experimental studies of nanocrystalline tungsten trioxide thin films. Functional properties of WO3 have interesting applications in research areas connected to energy efficiency and green nanotechnology. READ MORE
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13. Beyond average crystal structures: understanding extended and local environments in proton-conducting Sc-substituted BaTiO3 perovskites
Abstract : Proton conducting ceramics are very promising for applications concerned with energy sourcing with cleaner, safer, more abundant and cheaper alternatives to fossil fuels. These materials are still in development and advances in the field depend on a better understanding of the role of defects, their identification and location in the host framework, and the assessment of their short- and long-range dynamics and kinetics. READ MORE
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14. Neutron spectroscopy and computational studies of hydride-ion dynamics in oxide- and nitride-hydride materials
Abstract : This thesis presents studies of the hydride-ion dynamics in the nitride- and oxidehydride materials Ca3CrN3H and BaTiO3-xHx (with x < 0.2). READ MORE
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15. Stability of point defects in silicon induced by high energy low dose ion implantation
Abstract : Ion implantation is a key' process for the introduction ofdopants in semiconductor technology. It involves bombarding thesubstrate material with energetic ions. READ MORE