Sökning: "photoelectron spectroscopy PES"

Visar resultat 21 - 25 av 40 avhandlingar innehållade orden photoelectron spectroscopy PES.

  1. 21. Interfaces in Dye-Sensitized Oxide / Hole-Conductor Heterojunctions for Solar Cell Applications

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

    Sammanfattning : 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. LÄS MER

  3. 22. Characterization of Surfaces Designed for Biomedical Applications

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

    Sammanfattning : 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). LÄS MER

  4. 23. Structure and Electronic Properties of Phthalocyanine Films on Metal and Semiconductor Substrates

    Författare :Ieva Bidermane; Carla Puglia; Nadine Witkowski; Nils Mårtensson; Luca Giovanelli; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Phthalocyanines; silicon 100 ; Au 111 ; photoelectron spectroscopy; scanning tunneling microscopy; surface science; organic molecules on surface;

    Sammanfattning : The current thesis presents fundamental studies of phthalocyanines (Pcs), a group of organic macro-cycle molecules. The use of phthalocyanine molecular films in devices with a variety of possible technological applications has been the reason of the many studies dedicated to such molecules during the last decades. LÄS MER

  5. 24. Towards Safer Lithium-Ion Batteries

    Författare :Marie Herstedt; Kristina Edström; Martin Winter; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Inorganic chemistry; lithium-ion batteries; photoelectron spectroscopy; surface film; thermal stability; electrolyte additive; graphite; lithium iron phosphate; Oorganisk kemi; Inorganic chemistry; Oorganisk kemi; Inorganic Chemistry; oorganisk kemi;

    Sammanfattning : Surface film formation at the electrode/electrolyte interface in lithium-ion batteries has a crucial impact on battery performance and safety. This thesis describes the characterisation and treatment of electrode interfaces in lithium-ion batteries. LÄS MER

  7. 25. Surface Reactivity and Electronic Structure of Metal Oxides

    Författare :Anneli Önsten; Ulf Karlsson; Anne Borg; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; oxides; surfaces; defects; cuprous oxide; zinc oxide; magnetite; water; OH; sulfur dioxide; photoelectron spectroscopy; scanning tunneling microscopy; Material physics with surface physics; Materialfysik med ytfysik;

    Sammanfattning : The foci of this thesis are the metal oxides Cu2O, ZnO and Fe3O4 and their interaction with water and sulfur dioxide (SO2). The intention is to study SO2-induced atmospheric corrosion on a molecular level. All studies are based on photoelectron spectroscopy (PES) and scanning tunneling microscopy (STM) measurements. LÄS MER