High Performing Organic Solar Cells Processed from Green Solvents
Thuc-Quyen Nguyen a
a Center for Polymers and Organic Solids and Department of Chemistry and Biochemistry University of California, Santa Barbara
nanoGe Fall Meeting
Proceedings of Materials for Sustainable Development Conference (MAT-SUS) (NFM22)
#BRIGHT - Recent Breakthroughs in Organic Photovoltaics
Barcelona, Spain, 2022 October 24th - 28th
Organizers: Thomas Anthopoulos and Safa Shoaee
Invited Speaker, Thuc-Quyen Nguyen, presentation 251
DOI: https://doi.org/10.29363/nanoge.nfm.2022.251
Publication date: 11th July 2022

Organic solar cells (OSCs) using non-fullerene acceptors (NFAs) have garnered a lot of attention during the last years and showed dramatic increases in the power conversion efficiency (PCE). PCEs higher than 19% for single-junction systems were achieved, but these high-performance organic photovoltaic cells are often processed with halogenated solvents.  To accelerate the mass fabrication of OSCs, green solvent processing is crucial to reduce the harmful effect of halogenated solvents to human health and our environment. In this talk, I will discuss the design, synthesis, and performance of organic semiconductors processed from green solvents such as xylene and 2-methyltetrahydrofuran (2-MeTHF).  2-MeTHF is a biomass-derived (furfural or levulinic acid) and environmentally friendly solvent that is widely used in organic synthesis, which can be produced from low-cost and renewable agriculture feedstock.  A combination of characterization methods were employed to gain insight into the film morphology and solar cell performance.

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