Photoactive Layer Design Rules for Efficient and Stable Nonfullerene Solar Cells
Derya Baran a
a KAUST Solar Center, Physical Sciences and Engineering Division (PSE), Materials Science and Engineering Program (MSE), King Abdullah University of Science and Technology (KAUST), Thuwal, Kingdom of Saudi Arabia
Online Conference
Proceedings of NFA-Based Organic Solar Cells: Materials, Morphology and Fundamentals (NFASC)
Online, Spain, 2021 February 3rd - 4th
Organizers: Natalie Banerji and Feng Gao
Invited Speaker, Derya Baran, presentation 008
DOI: https://doi.org/10.29363/nanoge.nfasc.2021.008
Publication date: 25th January 2021

The efficiency of organic photovoltaics have seen a phenomenal increase in the last couple of years with the discovery of small molecule nonfullerene acceptors (NFAs). Molecular design strategies of the photoactive layer have boosted the performance with intelligent interface engineering beyond 18% so far. One way to boost the performance of the NFA devices is to add a third component in the photoactive layer, known as ternary approach. Most of the record efficiency devices have been reported adopting this strategy in the field of OPV. However, there is still a lack of understanding how to design a third component to achieve both efficient and stable devices with no burn-in at the first 100h of operation. In order to bring OPV technology into commercial applications in solar windows, building integrated PV, agrivoltaics or even in integrated circuits one would need not only efficient but also reliable devices. In this talk, I will focus on how to design the photoactive layer components and morphology so that we would have state-of-the-art performances along with improved photostability.

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