Search for dissertations about: "NEXAFS"

Showing result 16 - 20 of 38 swedish dissertations containing the word NEXAFS.

  2. 16. Theoretical Characterization of Functional Molecular Materials

    Author : Xiuneng Song; Yi Luo; Mauro Stener; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; first-principles; soft X-ray spectroscopy; endohedral fullerene; fullerene derivatives; self-assembled monolayers; SRA - Molecular Bioscience; SRA - Molekylär biovetenskap;

    Abstract : Nowadays, material, energy and information technologies are three pillar industries. The materials that have close relation with our life have also been the foundation for the development of energy and information technologies. READ MORE

  4. 17. Complex Excitations in Advanced Functional Materials

    Author : Johann Lüder; Barbara Brena; Frank de Groot; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; X-ray Absorption Spectroscopy; Photoelectron Spectroscopy; Adsorption; Phthalocyanines; Biphenylene; Excitons; Functional Materials;

    Abstract : Understanding the fundamental electronic properties of materials is a key step to develop innovations in many fields of technology. For example, this has allowed to design molecular based devices like organic field effect transistors, organic solar cells and molecular switches. READ MORE

  5. 18. Preparation and characterization of an organic-based magnet

    Author : Elin Carlegrim; Mats Fahlman; Svante Svensson; Linköpings universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Organic-based magnets; spintronics; photoelectron spectroscopy; near edge x-ray absorption fine structure spectroscopy; chemical vapor deposition; physical vapor deposition; Material physics with surface physics; Materialfysik med ytfysik;

    Abstract : In the growing field of spintronics there is a strong need for development of flexible lightweight semi-conducting magnets. Molecular organic-based magnets are attractive candidates since it is possible to tune their properties by organic chemistry, making them so-called “designer magnets”. READ MORE

  6. 19. Probing the effects of photodegradation of acceptor materials in polymer solar cells: bulk, surface, and molecular level

    Author : Vanja Blazinic; Ellen Moons; Leif Ericsson; Thomas Wågberg; Karlstads universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; photovoltaics; polymer solar cell; conjugated polymers; fullerene; photo-oxidation; spectroscopy; Physics; Fysik;

    Abstract : Polymer solar cells (PSC) have reached record power conversion efficiencies of over 15%. The operational lifetime of PSCs, however, has to increase for their use in large area outdoor applications. READ MORE

  7. 20. Infrared - X-ray pump probe spectroscopy

    Author : Viviane Costa Felicissimo; Faris Gelmukhanov; KTH; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Biochemistry; Biokemi; Biochemistry; Biokemi;

    Abstract : The present thesis concerns theoretical studies of molecular interactions investigated by infrared and X-ray spectroscopic techniques, with emphasis on using the two technologies combined in pump probe experiments. Three main types of studies are addressed: the use of near-edge X-ray absorption fine structure spectra (NEXAFS) to manifest through-bond and through-space interactions; the role of hydrogen bonding on the formation of X-ray photoelectron spectra as evidenced by simulations of the water dimer; and the development of theory, with sample applications, for infrared X-ray pump probe spectroscopy - the main theme of the thesis. READ MORE