{"id":{"repo_id":"oldenburg","oai_identifier":"oai:oops.uni-oldenburg.de:79"},"canonical_url":"https://search.dev.ndltd.org/etd/oldenburg/oai:oops.uni-oldenburg.de:79","repository":{"repo_id":"oldenburg","name":"Carl von Ossietzky Universität Oldenburg","base_url":"http://oops.uni-oldenburg.de/cgi/oai2"},"display":{"title":"Optische und elektrische Spektroskopie an alternativen Absorbermaterialien für organische Solarzellen","abstract":"In this thesis several issues dealing with organic photovoltaics are discussed. Optical measurements on polymers and polymer-fullerene blends are shown to demonstrate, in principle, if these materials and material combinations are suitable for organic solar cell applications. An optimal post-heat treatment of the PEDOT:PSS interfacial layer in the organic solar cell is shown. A part of this thesis is concerned with studies of different alternative materials and concepts. Low-band-gap-polymers as well as double-cable-polymers and full polymer solar cells are investigated. These materials show potential but they do not reach the efficiency of standard organic solar cells. Further, different fullerene derivatives are analyzed. Another main part of the thesis is the impedance spectroscopy. An equivalent circuit out of capacities and resistances is found to fit the experimental data. Thereby it is notable that the capacity describing the active layer is connected in parallel to the system.","abstract_html":"In this thesis several issues dealing with organic photovoltaics are discussed. Optical measurements on polymers and polymer-fullerene blends are shown to demonstrate, in principle, if these materials and material combinations are suitable for organic solar cell applications. An optimal post-heat treatment of the PEDOT:PSS interfacial layer in the organic solar cell is shown. A part of this thesis is concerned with studies of different alternative materials and concepts. Low-band-gap-polymers as well as double-cable-polymers and full polymer solar cells are investigated. These materials show potential but they do not reach the efficiency of standard organic solar cells. Further, different fullerene derivatives are analyzed. Another main part of the thesis is the impedance spectroscopy. An equivalent circuit out of capacities and resistances is found to fit the experimental data. Thereby it is notable that the capacity describing the active layer is connected in parallel to the system.","abstract_has_math":false,"creators":["Knipper, Martin"],"institution":"Universität Oldenburg","degree_name":null,"degree_level":"thesis.doctoral","degree_discipline":null,"degree_department":null,"school":null,"contributors":[],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2006,"date_issued":"2006-10-25","date_published":"2006-10-25","updated_at":"2026-07-27T20:27:08Z","subjects":["[Keine Schlagwörter von Autor/in vergeben.]"],"languages":[],"rights":[],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"http://oops.uni-oldenburg.de/79","outbound_label":"Repository record","outbound_source":"source_url"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:creator","label":"Author","values":["Knipper, Martin"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:publisher","label":"Institution","values":["BIS der Universität Oldenburg"]},{"key":"dc:type","label":"Dc Type","values":["doctoralThesis"]},{"key":"thesis:degree_level","label":"Degree Level","values":["thesis.doctoral"]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["Universität Oldenburg"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["[Keine Schlagwörter von Autor/in vergeben.]"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["In this thesis several issues dealing with organic photovoltaics are discussed. Optical measurements on polymers and polymer-fullerene blends are shown to demonstrate, in principle, if these materials and material combinations are suitable for organic solar cell applications. An optimal post-heat treatment of the PEDOT:PSS interfacial layer in the organic solar cell is shown. A part of this thesis is concerned with studies of different alternative materials and concepts. Low-band-gap-polymers as well as double-cable-polymers and full polymer solar cells are investigated. These materials show potential but they do not reach the efficiency of standard organic solar cells. Further, different fullerene derivatives are analyzed. Another main part of the thesis is the impedance spectroscopy. An equivalent circuit out of capacities and resistances is found to fit the experimental data. Thereby it is notable that the capacity describing the active layer is connected in parallel to the system.","Verschiedene alternativen Materialien und Materialkombinationen für organische Solarzellen wurden optisch und elektrisch charakterisiert. So z.B. low-band-gap-Polymere, double-cable-Polymere und reine Polymergemische ohne Fulleren, die jeweils zwar Potential zeigen, aber noch nicht die Wirkungsgrade der heutigen Standardzellen erreichen. Darüber hinaus wurden verschiedene Fullerenderivate untersucht. Optische Messungen an Polymeren und Polymer-Fulleren-Gemischen klären die grundsätzliche Eignung dieser Materialien und Materialkombinationen für Solarzellen. Eine optimale Temperatur für die Nachbehandlung der PEDOT:PSS-Zwischenschicht in der Solarzelle wurde gefunden. Ein weiterer Schwerpunkt der Arbeit liegt auf der Impedanzspektroskopie. Ein Ersatzschaltbild aus Kapazitäten und Widerständen wurde erstellt, mit dem die experimentellen Daten angefittet werden können. Dabei ist zu beachten, dass die Kapazität, die die aktive Schicht beschreibt, parallel zu dem System geschaltet wird."]},{"key":"dc:format.medium","label":"Dc Format Medium","values":["application/pdf"]},{"key":"dc:title","label":"Title","values":["Optische und elektrische Spektroskopie an alternativen Absorbermaterialien für organische Solarzellen"]}]}],"canonical_facts":{"dc:creator":["Knipper, Martin"],"dc:description.abstract":["In this thesis several issues dealing with organic photovoltaics are discussed. Optical measurements on polymers and polymer-fullerene blends are shown to demonstrate, in principle, if these materials and material combinations are suitable for organic solar cell applications. An optimal post-heat treatment of the PEDOT:PSS interfacial layer in the organic solar cell is shown. A part of this thesis is concerned with studies of different alternative materials and concepts. Low-band-gap-polymers as well as double-cable-polymers and full polymer solar cells are investigated. These materials show potential but they do not reach the efficiency of standard organic solar cells. Further, different fullerene derivatives are analyzed. Another main part of the thesis is the impedance spectroscopy. An equivalent circuit out of capacities and resistances is found to fit the experimental data. Thereby it is notable that the capacity describing the active layer is connected in parallel to the system.","Verschiedene alternativen Materialien und Materialkombinationen für organische Solarzellen wurden optisch und elektrisch charakterisiert. So z.B. low-band-gap-Polymere, double-cable-Polymere und reine Polymergemische ohne Fulleren, die jeweils zwar Potential zeigen, aber noch nicht die Wirkungsgrade der heutigen Standardzellen erreichen. Darüber hinaus wurden verschiedene Fullerenderivate untersucht. Optische Messungen an Polymeren und Polymer-Fulleren-Gemischen klären die grundsätzliche Eignung dieser Materialien und Materialkombinationen für Solarzellen. Eine optimale Temperatur für die Nachbehandlung der PEDOT:PSS-Zwischenschicht in der Solarzelle wurde gefunden. Ein weiterer Schwerpunkt der Arbeit liegt auf der Impedanzspektroskopie. Ein Ersatzschaltbild aus Kapazitäten und Widerständen wurde erstellt, mit dem die experimentellen Daten angefittet werden können. Dabei ist zu beachten, dass die Kapazität, die die aktive Schicht beschreibt, parallel zu dem System geschaltet wird."],"dc:format.medium":["application/pdf"],"dc:publisher":["BIS der Universität Oldenburg"],"dc:subject":["[Keine Schlagwörter von Autor/in vergeben.]"],"dc:title":["Optische und elektrische Spektroskopie an alternativen Absorbermaterialien für organische Solarzellen"],"dc:type":["doctoralThesis"],"thesis:degree_level":["thesis.doctoral"],"thesis:institution_name":["Universität Oldenburg"]},"updated_at":"2026-07-27T20:27:08Z"}