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Updated: Apr 15, 2026

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Dominant effects of first monolayer energetics at donor/acceptor interfaces on organic photovoltaics
Seiichiro Izawa1,2, Kyohei Nakano1, Kaori Suzuki1
1RIKEN Center for Emergent Matter Science (CEMS), 2-1 Hirosawa, Wako, Saitama, 351-0198, Japan.
Abstract:
Energy levels of the first monolayer are manipulated at donor/acceptor interfaces in planar heterojunction organic photovoltaics by using molecular self-organization. A "cascade" energy landscape allows thermal-activation-free charge generation by photoirradiation, destabilizes the energy of the interfacial charge-transfer state, and suppresses bimolecular charge recombination, resulting in a higher open-circuit voltage and fill factor.
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