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22 August 2020 Revealing self-stimulated dissociation in non-fullerene organic bulk-heterojunction solar cells
Bin Hu
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Proceedings Volume 11474, Organic, Hybrid, and Perovskite Photovoltaics XXI; 1147409 (2020) https://doi.org/10.1117/12.2570137
Event: SPIE Organic Photonics + Electronics, 2020, Online Only
Abstract
Our recent studies have found the unique phenomenon where the dissociation becomes a self-stimulated process occurring at donor:acceptor interfaces in non-fullerene organic solar cells [ITO/ZnO/C60-SAM/PM6:Y6/MoO3/Ag] with the remarkable power-conversion efficiency of 15.6 %. The self-stimulated dissociation was discovered by monitoring the dissociation at D:A (PM6:Y6) interfaces with our magneto-photocurrent measurement. It was observed that, as the excitons are increased, the dissociation at D:A interfaces becomes surprisingly easier, once the non-fullerene Y6 molecules are optically excited. This presents a self-stimulated dissociation where the electron-hole pairs experience an internal stimulation at D:A interfaces to dissociate into free carriers. This presentation will discuss the underlying mechanism of establishing self-stimulated dissociation in non-fullerene organic solar cells towards developing high-efficiency photovoltaics in non-fullerene organic solar cells.
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Bin Hu "Revealing self-stimulated dissociation in non-fullerene organic bulk-heterojunction solar cells", Proc. SPIE 11474, Organic, Hybrid, and Perovskite Photovoltaics XXI, 1147409 (22 August 2020); https://doi.org/10.1117/12.2570137
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KEYWORDS
Solar cells
Interfaces
Molecules
Organic photovoltaics
Photovoltaics
Polarization
Dipolar polarization
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