Self-Assembly enables Simple Structure Organic Photovoltaics via Green-Solvent and Open-Air-Printing: Closing the Lab-to-Fab Gap
Hua Tang b
a KAUST Solar Center (KSC), Physical Sciences and Engineering Division (PSE), King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Kingdom of Saudi Arabia
b The Hong Kong Polytechnic University, Hung Hom, Hong Kong, Hong Kong, Hong Kong
International Conference on Hybrid and Organic Photovoltaics
Proceedings of International Conference on Hybrid and Organic Photovoltaics (HOPV23)
London, United Kingdom, 2023 June 12th - 14th
Organizers: Tracey Clarke, James Durrant and Trystan Watson
Oral, Hua Tang, presentation 024
DOI: https://doi.org/10.29363/nanoge.hopv.2023.024
Publication date: 30th March 2023

The emergence of nonfullerene acceptors (NFAs) has triggered a rapid advance in the performance of organic solar cells (OSCs), endowing OSCs to arise as a promising contender for 3rd generation photovoltaic technologies. Meanwhile, the ultimate goal of OSCs is to deliver cheap, stable, efficient, scalable, and eco-friendly solar-to-power products contributing to global carbon neutrality. However, simultaneously balancing these five critical factors of OSCs toward commercialization is extremely challenging. In this presentation, I will show the self-assembly strategy we developed to reduce the gap of high power conversion efficiency (PCE), long-term stability, green-solvent-processibility, scalability, and low cost of OSCs and demonstrate our green-solvent-processable and open-air-printable OSCs with simultaneously simplified device architecture and enhanced PCE, shelf, thermal as well as light illumination stability. Further, I will demonstrate a comparison of self-assembled and traditional devices and unveil the enhancement of self-assembled devices on photovoltaic performance and stability in detail with in-situ and ex-situ multimodal characterizations. Finally, I will present our results on scale-up fabrication and perspective to apply our self-assembly strategy to close the lab-to-fab gap of OSCs toward commercialized cheap, stable, efficient, scalable, and eco-friendly OSCs.

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