Search for dissertations about: "electron-hole generation"
Showing result 1 - 5 of 15 swedish dissertations containing the words electron-hole generation.
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1. On Generation and Recombination in Cu(In,Ga)Se2 Thin-Film Solar Cells
Abstract : The solar cell technology based on Cu(In,Ga)Se2 (CIGS) thin-films provides a promising route to cost competitive solar electricity. The standard device structure is ZnO:Al/ZnO/CdS/CIGS/Mo films on a glass substrate, where the first three layers are n-type semiconductors with wide bandgaps, forming a pn-junction with the p-type CIGS absorber layer; the Mo layer serves as a back contact. READ MORE
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2. Probing Electron Collisions in Nanostructures
Abstract : This thesis studies the role of interaction between charged particles for transport and optical properties in nanostructures. Simulations are provided for a quantitative description of the system dynamics probed by either current spectroscopy or light absorption. READ MORE
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3. Microscopic Modeling of Exciton Propagation and Dissociation in Two-Dimensional Materials
Abstract : Atomically thin materials have been in the spotlight of research during the last decade due to their exceptional properties, providing a platform for the study of novel physical phenomena. In particular, transition metal dichalcogenides (TMDs) have emerged as promising atomically thin materials for future optoelectronic applications owing to their strong light-matter interaction and their high tunability. READ MORE
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4. Spin Properties in InAs/GaAs Quantum Dot based Nanostructures
Abstract : Semiconductor quantum dots (QDs) are a promising building block of future spin-functional devices for applications in spintronics and quantum information processing. Essential to the realization of such devices is our ability to create a desired spin orientation of charge carriers (electrons and holes), typically via injection of spin polarized carriers from other parts of the QD structures. READ MORE
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5. Dynamics of excited electronic states in functional materials
Abstract : Non-equilibrium processes involving excited electron states are very common in nature. This work summarizes some of the theoretical developments available to study them in finite and ex-tended systems. READ MORE