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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 6: Poster Session I - Molecular Electronics and Wetting

CPP 6.9: Poster

Montag, 22. März 2021, 16:30–18:30, CPPp

Compatible solution-processed interface materials for improving efficiency and prolonging the lifetime of organic solar cells — •Zhuo Xu^1,2, Jose Prince Madalaimuthu^1,2,3, Josef Bernd Slowik^1,2, Rico Meitzner^1,2, Shahidul Alam^1,2, Ulrich S Schubert^1,2, and Harald Hoppe^1,2 — ¹Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstraße 10, 07743 Jena, Germany. — ²Center for Energy and Environmental Chemistry Jena (CEEC Jena), Friedrich Schiller University Jena, Philosophenweg 7a, 07743 Jena, Germany. — ³Abbe School of Photonics, Friedrich Schiller University Jena, Albert-Einstein-Straße 6, 07745 Jena, Germany

The electron transport layer (ETL) in an organic solar cell is one of the main components that play a crucial role in the separation of charges, improving efficiency, and increasing the lifetime of the solar cells. Herein, solution-processed PBDTTT-CT: PC70BM based organic solar cells were fabricated using PDINO, Titanium Oxide (TiOx), and the mixture of PDINO and TiOx as an ETL. A power conversion efficiency (PCE) of 7.9% was achieved when a mixture of PDINO and TiOx was used as an ETL, which is one of the highest reported efficiency for halogen-free solvent processed PBDTTT-CT:PC70BM based polymer solar cells (PSCs). Furthermore, lower recombination, higher exciton dissociation probability, and longer lifetime were observed from the same device that indicates the selectivity of ETL can effectively improve the performance and stability of the solar cells.