000892994 001__ 892994
000892994 005__ 20240712084453.0
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000892994 0247_ $$2URN$$aurn:nbn:de:0001-2021080403
000892994 020__ $$a978-3-95806-528-4
000892994 037__ $$aFZJ-2021-02489
000892994 1001_ $$0P:(DE-Juel1)164454$$aZonno, Irene$$b0$$eCorresponding author
000892994 245__ $$aCapacitance-Based Methods to Study Charge Transport and Recombination in Organic Solar Cells$$f- 2021-07-28
000892994 260__ $$aJülich$$bForschungszentrum Jülich GmbH Zentralbibliothek, Verlag$$c2021
000892994 300__ $$avi, 153
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000892994 4900_ $$aSchriften des Forschungszentrums Jülich Reihe Energie & Umwelt / Energy & Environment$$v530
000892994 502__ $$aDissertation, Duisburg, Univ, 2020$$bDissertation$$cDuisburg, Univ$$d2020
000892994 520__ $$aIn the last decades, organic photovoltaics has emerged as a promising environmentfriendlyand low-cost technology for the production of energy. Even though the efficiencyof organic solar cells has increased rapidly during the last years, further improvementsin terms of device lifetime and performance are still needed for a successfulcommercialization of such solar cells.In this work, two important processes affecting the efficiency of organic solar cells,namely the recombination and the transport of charge carriers, are investigated. Solution-processed solar cells based on different polymer:fullerene systems are studied byusing impedance-based techniques, specifically capacitance-voltage and capacitancefrequencymeasurements, in combination with steady state current-voltage measurementsand numerical simulations.In the first step, current-voltage measurements and drift-diffusion simulations areused together to develop a method to discriminate between surface and bulk recombinationin organic solar cells. The application of the method to a range of current-voltagedata of organic solar cells based on different polymer:fullerene systems and with diversearchitectures confirms the validity of the method and shows the possibility toobserve the whole range of cases, from mostly surface limited to purely bulk limitedrecombination, in the field of organic photovoltaics.
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000892994 9141_ $$y2021
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