Search for dissertations about: "perovskites"

Showing result 16 - 20 of 63 swedish dissertations containing the word perovskites.

  2. 16. X-ray Phase Contrast Tomography : Setup and Scintillator Development

    Author : Hanna Dierks; NanoLund: Centre for Nanoscience; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; x-rays; x-ray imaging; x-ray microscopy; X-ray detectors; perovskites; laboratory setups; phase contrast; μCT; scintillator; Phase contrast PC ; Tomography x-ray computed ;

    Abstract : X-ray microscopy and micro-tomography (μCT) are valuable non-destructive examination methods in many disciplines such as bio-medical research, archaeometry, material science and paleontology. Besides being implemented at synchrotrons radiation sources, laboratory setups using an X-ray tube and high-resolution scintillation detector routinely provide information on the micrometre scale. READ MORE

  4. 17. Interfacial Analysis and Charge Transfer in Solar Cells

    Author : Xinjian Geng; Jacinto Sá; Ellen Moons; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Perovskites; Charge Transport Layer; Plasmonics; Hot Carriers; Interfaces; Photoluminescence; Solar Cells; Chemistry with specialization in Physical Chemistry; Kemi med inriktning mot fysikalisk kemi;

    Abstract : Harnessing sunlight through solar cells is vital for sustainable energy production. The conventional architecture of a solar cell consists of multilayers of materials, each serving a particular function. The absorbing layer converts the solar energy into valuable electricity by the photovoltaic effect. READ MORE

  5. 18. Acceptor-doped barium zirconate: Oxidation, hydration and space-charge formation

    Author : Anders Lindman; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; BaZrO3; space charge; point defects; oxidation; GW; hydration; density functional theory; grain boundaries; interatomic potential; perovskites;

    Abstract : The current production and use of fossil fuels is not sustainable and new technologies are needed to become more independent of these fuels.The hydrogen economy, with the fuel cell as an efficient converter of chemical to electrical energy, is a desirable alternative.For this to become a reality, new materials with tailored properties are required. READ MORE

  6. 19. Protons in In-doped BaZrO3: incorporation, distribution and local environments

    Author : Laura Mazzei; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; hydrogen dynamics; hydrogen depth profiling; vibrational spectroscopy; neutron scattering; thin films; perovskites; Proton conductors;

    Abstract : Acceptor doped proton conducting oxides are currently of large interest for their potential application as electrolyte materials in the future generation of solid oxide fuel cells. However, their proton conductivities are still lower than the target conductivity required for practical applications. READ MORE

  7. 20. Local structure and dynamics in proton conducting perovskite oxides: insights from quasielastic neutron scattering and infrared spectroscopy

    Author : Elena Naumovska; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Perovskites; infrared spectroscopy.; quasielastic neutron scattering; proton- conducting oxides; proton dynamics;

    Abstract : Proton conducting oxides have been extensively studied in the past decade due to their potential application in a number of energy related devices such as solid oxide fuel cells, hydrogen sensors, and steam electrolyzers. However, the final industrialisation of these materials depends on unlocking fundamental questions about the relationship between their atomic structure, localized proton dynamics and proton conductivity. READ MORE