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Kim, Jin Young
Next Generation Energy Lab.
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dc.citation.number 1 -
dc.citation.startPage 1870 -
dc.citation.title NATURE COMMUNICATIONS -
dc.citation.volume 14 - Fu, Yuang - Lee, Tack Ho - Chin, Yi-Chun - Pacalaj, Richard A. A. - Labanti, Chiara - Park, Song Yi - Dong, Yifan - Cho, Hye Won - Kim, Jin Young - Minami, Daiki - Durrant, James R. R. - Kim, Ji-Seon - 2023-12-21T12:41:18Z - 2023-12-21T12:41:18Z - 2023-07-03 - 2023-04 -
dc.description.abstract The non-fullerene acceptors (NFAs) employed in state-of-art organic photovoltaics (OPVs) often exhibit strong quadrupole moments which can strongly impact on material energetics. Herein, we show that changing the orientation of Y6, a prototypical NFA, from face-on to more edge-on by using different processing solvents causes a significant energetic shift of up to 210 meV. The impact of this energetic shift on OPV performance is investigated in both bilayer and bulk-heterojunction (BHJ) devices with PM6 polymer donor. The device electronic bandgap and the rate of non-geminate recombination are found to depend on the Y6 orientation in both bilayer and BHJ devices, attributed to the quadrupole moment-induced band bending. Analogous energetic shifts are also observed in other common polymer/NFA blends, which correlates well with NFA quadrupole moments. This work demonstrates the key impact of NFA quadruple moments and molecular orientation on material energetics and thereby on the efficiency of high-performance OPVs. Non-fullerene acceptors with large quadrupole moments strongly affect thin-film energetics. Here, the authors show a significant energetic shift (>200 meV) of Y6 upon changing its orientation from face-on to more edge-on using different solvents and its critical impact on organic photovoltaics. -
dc.identifier.bibliographicCitation NATURE COMMUNICATIONS, v.14, no.1, pp.1870 -
dc.identifier.doi 10.1038/s41467-023-37234-0 -
dc.identifier.issn 2041-1723 -
dc.identifier.scopusid 2-s2.0-85151842082 -
dc.identifier.uri -
dc.identifier.wosid 000983843800012 -
dc.language 영어 -
dc.publisher NATURE PORTFOLIO -
dc.title Molecular orientation-dependent energetic shifts in solution-processed non-fullerene acceptors and their impact on organic photovoltaic performance -
dc.type Article -
dc.description.isOpenAccess TRUE -
dc.relation.journalWebOfScienceCategory Multidisciplinary Sciences -
dc.relation.journalResearchArea Science & Technology - Other Topics -
dc.type.docType Article -
dc.description.journalRegisteredClass scie -
dc.description.journalRegisteredClass scopus -
dc.subject.keywordPlus OPEN-CIRCUIT VOLTAGE -
dc.subject.keywordPlus CHARGE-TRANSFER STATES -
dc.subject.keywordPlus SOLAR-CELLS -
dc.subject.keywordPlus RECOMBINATION -
dc.subject.keywordPlus TRANSITION -
dc.subject.keywordPlus GENERATION -
dc.subject.keywordPlus EFFICIENCY -
dc.subject.keywordPlus DYNAMICS -
dc.subject.keywordPlus METALS -


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