Search for dissertations about: "Polaron"
Showing result 6 - 10 of 30 swedish dissertations containing the word Polaron.
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6. Vibrational and Structural Characterisation in Two Perovskite Challenges: A Density Functional Theory Study
Abstract : The modelling of perovskites using density functional theory (DFT) can sometimes be a challenge with many different states very close in energy. In particular, the tilting of the inscribed octahedron, as well as the formation of electron polarons, leads to states with energy differences in the meV range. READ MORE
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7. Collective Excitation Dynamics in Molecular Aggregates
Abstract : The aim of this thesis is to study collective excitation dynamics in molecular aggregates. Half of the work presented here is method development and the remainder is application of these methods to several di.erent molecular aggregates. READ MORE
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8. On hydrogen point defects in perovskite oxides
Abstract : Oxides based on the perovskite structure exhibit a surprisingly large diversity in materials properties and are found in many different applications, several related to clean energy technologies, such as solar cells, batteries and fuel cells. Many properties in materials are the result of lattice imperfections, commonly denoted \emph{defects}, and much effort is devoted to fine tuning materials properties through controlling the defects therein. READ MORE
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9. Transition state theory from path-integrals, application to hydrogen diffusion on Ni(100)
Abstract : .... READ MORE
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10. Optical and electrical properties of some inhomogeneous materials used for energy efficient applications
Abstract : .... READ MORE
