Search for dissertations about: "Hans Siegbahn"

Showing result 6 - 10 of 12 swedish dissertations containing the words Hans Siegbahn.

  2. 6. Interfaces in Dye-Sensitized Oxide / Hole-Conductor Heterojunctions for Solar Cell Applications

    Author : Erik Johansson; Håkan Rensmo; Hans Siegbahn; Anders Sandell; Villy Sundström; Uppsala universitet; []
    Keywords : Physics; Photoelectron spectroscopy; Solar cells; Heterojunction; Fysik;

    Abstract : Nanoporous dye-sensitized solar cells (DSSC) are promising devices for solar to electric energy conversion. In this thesis photoelectron spectroscopy (PES), x-ray absorption spectroscopy (XAS) and photovoltaic measurements are used for studies of the key interfaces in the DSSC. READ MORE

  4. 7. The Rôle of Side-Chains in Polymer Electrolytes for Batteries and Fuel Cells

    Author : Jaanus Karo; Hans Siegbahn; Daniel Brandell; Patrik Johansson; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; molecular dynamics; polymer electrolytes; side-chains; Li-ion batteries; proton exchange membrane fuel cell PEMFC ; PFSA membrane; Other chemistry; Övrig kemi; Atomic and molecular physics; Atom- och molekylfysik; Materialvetenskap; Materials Science;

    Abstract : The subject of this thesis relates to the design of new polymer electrolytes for battery and fuel cell applications. Classical Molecular Dynamics (MD) modelling studies are reported of the nano-structure and the local structure and dynamics for two types of polymer electrolyte host: poly(ethylene oxide) (PEO) for lithium batteries and perfluorosulfonic acid (PFSA) for polymer-based fuel cells. READ MORE

  5. 8. Characterization of Surfaces Designed for Biomedical Applications

    Author : Emma Kristensen; Hans Siegbahn; Rolf Larsson; Sven Oscarsson; Uppsala universitet; []
    Keywords : Physics; heparin; photoelectron spectroscopy; phosphorylcholine; biomaterial; quartz crystal dissipation; Fysik; fysik; Physics;

    Abstract : In order to develop blood biocompatible materials a heparin surface and a phosphorylcholine (PC) functionalized polymer surface were characterized using photoelectron spectroscopy (PES). The formation of the heparin surface was studied by quartz crystal microbalance with dissipation monitoring (QCM-D). READ MORE

  6. 9. Studies of Semiconductors Modified with Nanoscale Light Absorbers for Solar Cell Application

    Author : Boriss Mahrov; Hans Siegbahn; Anders Hagfeldt; Håkan Rensmo; Gerrit Boschloo; Gary Hodes; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Physics; photoelectron spectroscopy; dye-sensitized; solar cells; inorganic light absorber; nanostructure; mesoporous; photovoltaic devices; Fysik; Physics; Fysik;

    Abstract : Recently, materials such as hole conductors (CuI, CuSCN) and light absorbers (Ru-complexes, CuInS2) have been actively investigated for application in nanocrystalline solar cells. In this thesis combinations of these materials have been studied. READ MORE

  7. 10. Bioactive adsorbates on gold surfaces : structural properties and bio-interaction studies

    Author : Rodrigo Jr Petoral; Hans Siegbahn; Linköpings universitet; []
    Keywords : NATURAL SCIENCES; NATURVETENSKAP;

    Abstract : This thesis investigates the properties of biomolecular, model adsorbates on gold such as amino acid derivatives, peptides and related organic molecules. Subsequent bin-interaction studies were also conducted. READ MORE