Substituent position engineering of diphenylquinoline-based Ir(III) complexes for efficient orange and white PhOLEDs with high color stability/low efficiency roll-off using a solution-processed emission layer
DC Field | Value | Language |
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dc.contributor.author | Sarada, Ganguri | - |
dc.contributor.author | Yoon, Juho | - |
dc.contributor.author | Cho, Woosum | - |
dc.contributor.author | Cho, Minji | - |
dc.contributor.author | Cho, Daw Won | - |
dc.contributor.author | Kang, Sang Ook | - |
dc.contributor.author | Nam, Yeonsig | - |
dc.contributor.author | Lee, Jin Yong | - |
dc.contributor.author | Jin, Sung-Ho | - |
dc.date.accessioned | 2021-09-04T05:20:26Z | - |
dc.date.available | 2021-09-04T05:20:26Z | - |
dc.date.created | 2021-06-18 | - |
dc.date.issued | 2016 | - |
dc.identifier.issn | 2050-7526 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/90301 | - |
dc.description.abstract | Three new heteroleptic Ir(III) complexes o-LIrpic, m-LIrpic, and p-LIrpic (L = CF(3)DPQ) consisting of 2,4-diphenylquinoline (DPQ) with a - CF3 group at ortho (o)/meta (m)/para (p) positions of the metalated phenyl ring, respectively, as the main ligands were synthesized and used as emitters in phosphorescent organic light-emitting diodes (PhOLEDs). We realized that - CF3 position extremely affects the crucial photophysical and electronic properties such as emission color, photoluminescence quantum yield (PLQY) and energy levels of these Ir(III) complexes resulting in - CF3 position-dependent performance of their PhOLEDs. To verify the effect of - CF3 group position on device performance, three other Ir(III) complexes o-LIrtmd, m-LIrtmd, and p-LIrtmd were synthesized using the same main ligands but a different ancillary ligand. In the two series of Ir(III) complexes, the devices with m-CF3 based complexes are outstanding in performance compared to o-or p-CF3 based ones due to the enhanced PLQY and well suppressed non-radiative deactivations by m-substitution. Finally, the single emission layer solution-processed orange and two-component white PhOLEDs fabricated using m-LIrpic as orange emitter achieved the maximum external quantum efficiency of 17.1% (43.9 cd A(-1)) and 21.1% (48.8 cd A(-1)), respectively, with highly stable color coordinates and low efficiency roll-off. This is the highest efficiency reported to date for solution-processed orange PhOLEDs using a small molecular host with easily accessible emitter. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | ROYAL SOC CHEMISTRY | - |
dc.subject | LIGHT-EMITTING-DIODES | - |
dc.subject | CYCLOMETALATED IRIDIUM COMPLEXES | - |
dc.subject | RED | - |
dc.subject | HOST | - |
dc.subject | BLUE | - |
dc.subject | PHOSPHORESCENCE | - |
dc.subject | DEVICES | - |
dc.subject | ELECTROPHOSPHORESCENCE | - |
dc.subject | DOPANTS | - |
dc.subject | LIGANDS | - |
dc.title | Substituent position engineering of diphenylquinoline-based Ir(III) complexes for efficient orange and white PhOLEDs with high color stability/low efficiency roll-off using a solution-processed emission layer | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Cho, Daw Won | - |
dc.contributor.affiliatedAuthor | Kang, Sang Ook | - |
dc.identifier.doi | 10.1039/c5tc03004h | - |
dc.identifier.scopusid | 2-s2.0-84951033640 | - |
dc.identifier.wosid | 000366912500013 | - |
dc.identifier.bibliographicCitation | JOURNAL OF MATERIALS CHEMISTRY C, v.4, no.1, pp.113 - 120 | - |
dc.relation.isPartOf | JOURNAL OF MATERIALS CHEMISTRY C | - |
dc.citation.title | JOURNAL OF MATERIALS CHEMISTRY C | - |
dc.citation.volume | 4 | - |
dc.citation.number | 1 | - |
dc.citation.startPage | 113 | - |
dc.citation.endPage | 120 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Materials Science | - |
dc.relation.journalResearchArea | Physics | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Multidisciplinary | - |
dc.relation.journalWebOfScienceCategory | Physics, Applied | - |
dc.subject.keywordPlus | LIGHT-EMITTING-DIODES | - |
dc.subject.keywordPlus | CYCLOMETALATED IRIDIUM COMPLEXES | - |
dc.subject.keywordPlus | RED | - |
dc.subject.keywordPlus | HOST | - |
dc.subject.keywordPlus | BLUE | - |
dc.subject.keywordPlus | PHOSPHORESCENCE | - |
dc.subject.keywordPlus | DEVICES | - |
dc.subject.keywordPlus | ELECTROPHOSPHORESCENCE | - |
dc.subject.keywordPlus | DOPANTS | - |
dc.subject.keywordPlus | LIGANDS | - |
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