Sökning: "disorder broadening"
Visar resultat 1 - 5 av 9 avhandlingar innehållade orden disorder broadening.
1. Influence of Global Composition and Local Environment on the Spectroscopic and Magnetic Properties of Metallic Alloys
Sammanfattning : Theoretical investigations of spectroscopic and magnetic properties of metallic systems in the bulk, as well as in nanostructured materials, have been performed within the density functional theory. The major part of the present work studies the differences between binding energies of electrons tightly bound to the atoms, the so-called core electrons (in contrast with the valence electrons), that is, core-level binding energy shift (CLS). LÄS MER
2. Formation and Dynamics of Molecular Excitons and their Fingerprints in Nonlinear Optical Spectroscopy
Sammanfattning : An efficient transfer of energy in molecular systems has proven to be of fundamental importance both in nature and industrial applications. The ability of molecules to work together forming collective excitations, so-called excitons, plays a key role in for example the extraordinary fast energy transfer involved in the first steps of photosynthesis. LÄS MER
3. Novel treatment approaches for children and adolescents with obsessive-compulsive disorder
Sammanfattning : Background: Obsessive-compulsive disorder (OCD) is a prevalent and disabling condition with typical onset during childhood. The recommended treatment is cognitive behavioral therapy (CBT), but it is seldom available to young people. LÄS MER
4. Effects of Energetic Disorder on the Optoelectronic Properties of Organic Solar Cells
Sammanfattning : Organic photovoltaics (OPVs) is a promising low-cost and environmental-friendly technology currently achieving 12-14% power conversion efficiency. Despite the extensive focus of the research community over the last years, critical mechanisms defining the performance of OPVs are still topics of debate. LÄS MER
5. Theoretical Considerations of Local Environment Effects in Alloys
Sammanfattning : This thesis is devoted to a theoretical study of local environment effects in alloys. A fundamental property of a disordered system is that all chemically equivalent atoms are different due to their different chemical environments, in contrast to an ideal periodic solid where all the atoms that occupy equivalent positions in the crystal have exactly the same physical properties. LÄS MER