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Kim, BongSoo
Polymer & Organic Semiconductor Lab.
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dc.citation.number 9 -
dc.citation.startPage 2202641 -
dc.citation.volume 11 - Park, Ho-Yeol - Ameen, Shahid - Kumaresan, Raja - Lee, Jieun - Park, Jeonghyeon - Song, Donghyun - Lee, Jaemin - Heo, Yuchan - Kim, BongSoo - Jin, Sung-Ho - 2023-12-21T12:40:29Z - 2023-12-21T12:40:29Z - 2023-04-18 - 2023-05 -
dc.description.abstract Two green heteroleptic Ir(III) complexes are reported, namely, bis[5-(2-ethylhexyl)-8-trifluoromethyl-5H-benzo[c][1,5]-naphthyridin-6-one](2-(5-phenyl-1,3,4-oxadiazol-2-yl)phenolate)iridium (III) (Ir(CF3BNO)(2)-pop) and bis[5-(2-ethylhexyl)-5H-benzo[c][1,5]naphthyridin-6-one](2-(5-phenyl-1,3,4-oxadiazol-2-yl)phenolate)iridium (III) (Ir(BNO)(2)-pop) for solution-processed phosphorescent organic light-emitting diodes (PHOLEDs). Both the Ir(III) complexes exhibit high external quantum efficiency (EQE) and intense green emission upon using poly(3,4-ethylenedioxythiophene):polystyrene sulfonic acid (PEDOT:PSS) as a hole injection layer (HIL); Ir(CF3BNO)(2)-pop based PHOLEDs perform better with an EQE of 23% and a current efficiency of 82 cd A(-1) than Ir(BNO)(2)-pop based PHOLEDs. In addition, to improve device operational lifetime, a crosslinkable HIL material, 9,9'-(cyclohexane-1,1-diylbis(4,1-phenylene))bis(N-phenyl-N-(4-(((4-vinylbenzyl)oxy)methyl)phenyl)-9H-carbazol-3-amine) (CPCzDPAX-1) is designed and synthesized. Device operational lifetimes of Ir(CF3BNO)(2)-pop and Ir(BNO)(2)-pop PHOLEDs incorporating the CPCzDPAX-1 HIL show 14-fold and 6-fold improvement, compared to the corresponding devices incorporating the PEDOT:PSS HIL. To the best of the authors' knowledge, this is the best device lifetime performance by using the combination of new Ir(III) complexes and HIL materials for solution-processed green PHOLEDs. -
dc.identifier.bibliographicCitation ADVANCED OPTICAL MATERIALS, v.11, no.9, pp.2202641 -
dc.identifier.doi 10.1002/adom.202202641 -
dc.identifier.issn 2195-1071 -
dc.identifier.scopusid 2-s2.0-85150774811 -
dc.identifier.uri -
dc.identifier.wosid 000952193900001 -
dc.language 영어 -
dc.publisher WILEY-V C H VERLAG GMBH -
dc.title Highly Efficient and Stable Green Phosphorescent Light-Emitting Diodes Based on Solution-Processable Ir(III) Complexes with Electron-Transporting Ancillary Ligands -
dc.type Article -
dc.description.isOpenAccess FALSE -
dc.relation.journalWebOfScienceCategory Materials Science, Multidisciplinary; Optics -
dc.relation.journalResearchArea Materials Science; Optics -
dc.type.docType Article; Early Access -
dc.description.journalRegisteredClass scie -
dc.description.journalRegisteredClass scopus -
dc.subject.keywordAuthor device stability -
dc.subject.keywordAuthor green phosphorescent light-emitting diodes -
dc.subject.keywordAuthor hole injection layer -
dc.subject.keywordAuthor Ir(III) dopants -
dc.subject.keywordAuthor solution-processed -
dc.subject.keywordAuthor thermal crosslinking -
dc.subject.keywordPlus IRIDIUM(III) COMPLEXES -
dc.subject.keywordPlus ELECTROLUMINESCENCE -
dc.subject.keywordPlus PHOTOLUMINESCENCE -


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