Search for dissertations about: "exciton"
Showing result 1 - 5 of 107 swedish dissertations containing the word exciton.
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1. Microscopic modelling of exciton-exciton interactions in atomically thin semiconductors
Abstract : The successful isolation and characterization of the technologically promising material graphene in 2004 has spurred huge interest in other two-dimensional materials. Transition-metal dichalcogenides (TMDs), being one such class of materials, display intriguing properties from both a fundamental and techno- logical point of view. READ MORE
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2. Strong exciton-photon and exciton-exciton coupling and its effects on molecular photophysics
Abstract : The energy of molecular states and their transition dynamics form the key properties to understand the photophysics of organic molecules. Strong exciton-photon and exciton-exciton couplings enable the possibility to manipulate these properties without changing the chemical structures. This is due to the formation of new energy states. READ MORE
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3. Microscopic Modeling of Exciton-Polaritons in Two-Dimensional Materials
Abstract : Integrating 2D materials into high-quality optical microcavities opens the door to fascinating many-particle phenomena including the formation of exciton-polaritons. These are hybrid quasi-particles inheriting properties of both the constituent photons and excitons. READ MORE
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4. Quantum Theory of Exciton-Exciton Interactions in Atomically Thin Semiconductors
Abstract : Atomically thin materials such as transition-metal dichalcogenides (TMDs) have emerged as an unprecedented platform for engineering future optoelectronic devices and studying exotic quantum phases of matter. In particular, the strong Coulomb interaction in these materials enables the formation of tightly-bound excitons, electron-hole pairs with neither purely fermionic nor bosonic character. READ MORE
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5. 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