Sökning: "NEXAFS"
Visar resultat 16 - 20 av 38 avhandlingar innehållade ordet NEXAFS.
16. Theoretical Characterization of Functional Molecular Materials
Sammanfattning : 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. LÄS MER
17. Complex Excitations in Advanced Functional Materials
Sammanfattning : 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. LÄS MER
18. Preparation and characterization of an organic-based magnet
Sammanfattning : 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”. LÄS MER
19. Probing the effects of photodegradation of acceptor materials in polymer solar cells: bulk, surface, and molecular level
Sammanfattning : 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. LÄS MER
20. Infrared - X-ray pump probe spectroscopy
Sammanfattning : 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. LÄS MER