Développement et application de méthodes de caractérisation pour la compréhension de la stabilité de modules photovoltaïques organiques fabriqués au déroulé

Abstract : In order to limit its environmental impact, a photovoltaic device must be efficient, sustainable and manufactured with a process that consumes low energy. In the last two decades organic photovoltaic cells have seen their efficiency increase tenfold (14% reached in 2018) making them more and more competitive with market-leading technologies (Si, thin films).Commercial organic devices are generally produced by printing in ambient air and therefore have relatively low manufacturing costs. The lifespan of these systems will vary with the materials involved and the applied stress and remains a weak point of the technology . A large number of research groups present lifetime studies on small scale devices produced at lab-scale. This work was conducted in collaboration with ARMOR and CEA-INES and aims at presenting the application of non-destructive characterization and analysis methods, to explain the evolution under illumination of organic photovoltaic modules (OPV) produced by roll-to-roll on an industrial pilot line. We will present the development and use of imaging methods (electroluminescence, photoluminescence), variable illumination measurement and modeling to explain the differences in performances after manufacturing and after aging between cells and OPV modules. This work has thus made it possible to highlight the disparities existing within modules and cells resulting from the same manufacturing process. In addition, some of the causes of degradation of these modules under illumination have been identified and mitigation strategies have been proposed.
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Marc-Antoine Llobel. Développement et application de méthodes de caractérisation pour la compréhension de la stabilité de modules photovoltaïques organiques fabriqués au déroulé. Science des matériaux [cond-mat.mtrl-sci]. Université Grenoble Alpes, 2019. Français. ⟨NNT : 2019GREAI024⟩. ⟨tel-02170042⟩

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