SKM 2023 – scientific programme
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HL: Fachverband Halbleiterphysik
HL 32: Organic Electronics and Photovoltaics II (joint session CPP/HL)
HL 32.7: Talk
Wednesday, March 29, 2023, 16:45–17:00, GÖR 226
Compatible solution-processed interface materials for improving the efficiency of organic solar cells — •Zhuo Xu1,2, Jose Prince Madalaimuthu1,2, Josef Bernd Slowik1,2, Rico Meitzner1,2, Aman Anand1,2, Shahidul Alam1,2,4, Héctor Corte5, Steffi Stumpf1,3, Ulrich S. Schubert1,2,3, and Harald Hoppe1,2 — 1Laboratory of Organic and Macromolecular Chemistry, Friedrich Schiller University Jena, Jena, Germany. — 2Center for Energy and Environmental Chemistry Jena, Friedrich Schiller University Jena, Jena, Germany. — 3Jena Center for Soft Matter, Friedrich Schiller University Jena, Jena, Germany. — 4King Abdullah University of Science and Technology, KAUST Solar Center, Physical Sciences and Engineering Division, Material Science and Engineering Program, Thuwal, Kingdom of Saudi Arabia. — 5Nanosurf AG, Liestal, Switzerland.
The electron transport layer (ETL) is a key components for better performance and stability in OSCs. Herein, conjugated PDINO, sol-gel derivatized under stoichiometric TiOx, and the same combination as the ETL was used to fabricate solution-processed PBDTTT-C-T:PC71BM-based OSCs. A hybrid of organic-inorganic ETL revealed less bimolecular and trap-assisted recombination than a single ETL of either material. Furthermore, the efficiency of devices using blend ETLs showed better performance in comparison to single ETLs in both fullerene and non-fullerene systems. This blending strategy have demonstrated beneficial consequences in device stability and efficiency, which will play key role for future commercialization of OSCs.