Current Challenges of Organic Solar Cells
ThucQuyen Nguyen a
a Center for Polymers & Organic Solids, University of California Santa Barbara, Santa Barbara, California 93106, United States
Asia-Pacific International Conference on Perovskite, Organic Photovoltaics and Optoelectronics
Proceedings of Asia-Pacific International Conference on Perovskite, Organic Photovoltaics and Optoelectronics (IPEROP23)
Kobe, Japan, 2023 January 22nd - 24th
Organizers: Seigo Ito, Hideo Ohkita and Atsushi Wakamiya
Invited Speaker, ThucQuyen Nguyen, presentation 016
Publication date: 21st November 2022

Organic solar cells (OSCs) using non-fullerene acceptors (NFAs) have garnered a lot of attention during the past few years and showed dramatic increases in the power conversion efficiency (PCE). PCEs higher than 19% for single-junction systems were achieved. In this talk, I will discuss the current challenges of organic solar cells such as materials reproducibility, green-solvent processing, device stability, and module development. I will highlight the importance of material reproducibility and our effort on understanding the device stability. 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. 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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