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Kim, Jin Young
Next Generation Energy Laboratory
Research Interests
  • Polymer solar cells, QD solar cells, organic-inorganic hybrid solar cells, perovskite solar cells, OLEDs, PeLEDs, organic FETs

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Planar Organic Bilayer Heterojunctions Fabricated on Water with Ultrafast Donor-to-Acceptor Charge Transfer

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dc.contributor.author Lee, Tack Ho ko
dc.contributor.author Park, Won-Woo ko
dc.contributor.author Park, Song Yi ko
dc.contributor.author Cho, Shinuk ko
dc.contributor.author Kwon, Oh-Hoon ko
dc.contributor.author Kim, Jin Young ko
dc.date.available 2021-07-01T07:44:22Z -
dc.date.created 2021-06-24 ko
dc.date.issued 2021-08 ko
dc.identifier.citation SOLAR RRL, v.5, no.8, pp.2100326 ko
dc.identifier.issn 2367-198X ko
dc.identifier.uri https://scholarworks.unist.ac.kr/handle/201301/53142 -
dc.description.abstract Herein, planar heterojunctions comprising a nonfullerene small molecular acceptor (NFA) and a polymer donor are demonstrated by transferring polymer films on a water surface on top of NFA layers. So far, most solution-processed layer-by-layer architectures have been reported as sequentially deposited bulk heterojunctions or pseudo-bilayers because mixed regions at the donor/acceptor interface are inevitable in these methods. By virtue of the unique properties of conjugated polymers such as hydrophobicity and spontaneous film formation on a water surface, the fabrication of NFA/polymer bilayer nanostructures is clearly demonstrated by dramatically simplified methods. These bilayers are successfully rendered into bilayer organic solar cells achieving a power conversion efficiency of up to 7.47%. This reflects that these bilayers have appropriate morphological and optoelectrical properties to be operated as photoactive layers in photovoltaic devices. Further, ultrafast charge transfer from the polymer donor to the NFA and fast carrier mobility are investigated by transient-absorption spectroscopy and photoinduced charge-extraction measurements. Fast carrier dynamics are observed, which are essential for the efficient harvest of excitons in photovoltaic devices. It is believed that the formation of planar heterojunctions on water can offer technical diversity for the fabrication methods of the photovoltaic devices. ko
dc.language 영어 ko
dc.publisher WILEY-V C H VERLAG GMBH ko
dc.title Planar Organic Bilayer Heterojunctions Fabricated on Water with Ultrafast Donor-to-Acceptor Charge Transfer ko
dc.type ARTICLE ko
dc.identifier.scopusid 2-s2.0-85107159639 ko
dc.identifier.wosid 000657635000001 ko
dc.type.rims ART ko
dc.identifier.doi 10.1002/solr.202100326 ko
dc.identifier.url https://onlinelibrary.wiley.com/doi/10.1002/solr.202100326 ko
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