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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 17: Poster I
CPP 17.22: Poster
Montag, 9. März 2026, 19:00–21:00, P5
Interfacial modification of transport layers for enhancing the performance and stability of organic solar cells — •Saib Jahan Qazi1,2, Md. Moidul Islam1,2, Md. Zobaer Ahmed Rahat1,2, Md. Farhatul Hassan1,2, Ulrich S. Schubert1,2, and Harald Hoppe1,2 — 1Laboratory of Organic and Macromolecular Chemistry (IOMC Jena), Friedrich Schiller- University Jena, Jena, Germany — 2Center for Energy and Environmental Chemistry Jena (CEEC Jena), Friedrich-Schiller-University Jena, Jena, Germany
Organic solar cells are emerging as promising prospects in the field of solar energy technology due to their low-cost, lightweight and simple roll to roll fabrication properties. A record power conversion efficiency above 19% has already been reported. However, long-term stability is still the main obstacle for commercialization due to inherent instability particularly at the interfaces. In this study, we demonstrate solution processed interfacial modification of zinc oxide (ZnO). ZnO is widely used in organic solar cells for electron extraction, but it brings performance and lifetime limitations due to surface defects and photochemical reactions under UV exposure, which generates radicals resulting into accelerated degradation of the photoactive layer in the device. Here we compare approaches using organic acids with polysilazane, for successful ZnO passivation.
Keywords: organic photovoltaics; solar cells; thin film; passivation; organic solar cells