10.18453/rosdok_id00002996 Krüger, Sjard Ole Sjard Ole Krüger http://d-nb.info/gnd/1231578378 https://orcid.org/0000-0002-4173-2588 Universität Rostock 2020 530 Physics 2020 en http://purl.uni-rostock.de/rosdok/id00002996 urn:nbn:de:gbv:28-rosdok_id00002996-8 This thesis does first gauge the influence of the complex valence-band structure on the Rydberg excitons of cuprous oxide. Subsequently, the influence of strain potentials is investigated as a means to induce trapping potentials for the Rydberg excitons. Furthermore, an analysis of the transition matrix-elements of excitonic transitions between states of the yellow, green and blue series is provided. Finally, the influence of a possible background of charged impurities on the excitonic absorption spectra is assessed.