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권오훈

Kwon, Oh Hoon
Ultrafast Laser Spectroscopy and Nano-microscopy Lab.
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dc.citation.endPage 1635 -
dc.citation.number 5 -
dc.citation.startPage 1628 -
dc.citation.title ACS ENERGY LETTERS -
dc.citation.volume 5 -
dc.contributor.author Lee, Tack Ho -
dc.contributor.author Park, Song Yi -
dc.contributor.author Park, Won-Woo -
dc.contributor.author Du, Xiaoyan -
dc.contributor.author Son, Jae Hoon -
dc.contributor.author Li, Ning -
dc.contributor.author Kwon, Oh Hoon -
dc.contributor.author Woo, Han Young -
dc.contributor.author Brabec, Christoph J. -
dc.contributor.author Kim, Jin Young -
dc.date.accessioned 2023-12-21T17:38:46Z -
dc.date.available 2023-12-21T17:38:46Z -
dc.date.created 2020-05-15 -
dc.date.issued 2020-05 -
dc.description.abstract Solution-processed bilayer organic solar cells (OSCs) with high performance are demonstrated for nonfullerene small molecular acceptors (NFAs). Unlike fullerene acceptors, NFAs show significant spectral overlap between their absorption and the photoluminescence (PL) of a polymer donor, which makes the design of an efficient exciton-harvesting bilayer heterojunction possible. Efficient exciton diffusion in the organic bilayer heterojunction is realized by long-range energy transfer between a polymer donor and NFAs. We observed efficient exciton diffusion from the polymer/NFA bilayer heterojunctions via thickness-dependent PL quenching and time-resolved PL measurements. Despite the strongly reduced donor-acceptor interface area, a substantial density of charge-transfer states is observed for the polymer/NFA bilayer heterojunctions by electroluminescence measurements. Overall, polymer/NFA bilayer heterojunction OSCs demonstrate a power conversion efficiency of 9%-10%, which is comparable to the photovoltaic performance of bulk heterojunction OSCs, with the additional advantage of simplified microstructure formation. -
dc.identifier.bibliographicCitation ACS ENERGY LETTERS, v.5, no.5, pp.1628 - 1635 -
dc.identifier.doi 10.1021/acsenergylett.0c00564 -
dc.identifier.issn 2380-8195 -
dc.identifier.scopusid 2-s2.0-85093686041 -
dc.identifier.uri https://scholarworks.unist.ac.kr/handle/201301/32156 -
dc.identifier.url https://pubs.acs.org/doi/10.1021/acsenergylett.0c00564 -
dc.identifier.wosid 000535176100033 -
dc.language 영어 -
dc.publisher AMER CHEMICAL SOC -
dc.title Efficient Exciton Diffusion in Organic Bilayer Heterojunctions with Nonfullerene Small Molecular Acceptors -
dc.type Article -
dc.description.isOpenAccess FALSE -
dc.relation.journalWebOfScienceCategory Chemistry, Physical; Electrochemistry; Energy & Fuels; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary -
dc.relation.journalResearchArea Chemistry; Electrochemistry; Energy & Fuels; Science & Technology - Other Topics; Materials Science -
dc.type.docType Article -
dc.description.journalRegisteredClass scie -
dc.description.journalRegisteredClass scopus -
dc.subject.keywordPlus POLYMER SOLAR-CELLS -
dc.subject.keywordPlus ELECTRON-ACCEPTOR -

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