Highly efficient white organic Light-Emitting diodes utilizing intermolecular interaction based on molecular geometry between host and deep blue Pt(Ⅱ) complex
DC Field | Value | Language |
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dc.contributor.author | Nam, Hyewon | - |
dc.contributor.author | Kim, Ki Ju | - |
dc.contributor.author | Ko, Soo-Byung | - |
dc.contributor.author | Kang, Sunwoo | - |
dc.contributor.author | Shin, Dong Jin | - |
dc.contributor.author | Kim, Jae-Min | - |
dc.contributor.author | Lee, Jun Yeob | - |
dc.contributor.author | Kim, Taekyung | - |
dc.date.accessioned | 2024-05-08T08:30:33Z | - |
dc.date.available | 2024-05-08T08:30:33Z | - |
dc.date.issued | 2024-05-01 | - |
dc.identifier.issn | 1385-8947 | - |
dc.identifier.issn | 1873-3212 | - |
dc.identifier.uri | https://scholarworks.bwise.kr/hongik/handle/2020.sw.hongik/33065 | - |
dc.description.abstract | Previous studies on white organic light-emitting diodes (WOLEDs) using a single Pt dopant relied on square-planar Pt complexes, exhibiting various emission characteristics due to ligand-centered π-π interactions. However, this approach limits the range of the materials selections to those with excimer or aggregation-induced emission (AIE) properties. In this study, a new method for creating WOLEDs with a single Pt dopant is proposed. We observed the emergence of an intermolecular interaction, specifically the formation of an exciplex due to π-π interaction between the n-host (ET) and the Pt complex, leading to a low-energy yellow emission. By varying the mixing ratio of ET and Pt complex, a spectrum of emissions ranging from pure blue to yellow was achievable. Consequently, we constructed 3-stack tandem devices, leveraging color variations based on the ET:Pt ratio. As a result, we successfully achieved a cool white emission with a Color Rendering Index (CRI) of 66.7, International Commission on Illumination (CIE) coordinates of (0.294, 0.380). Additionally, through optimization of the device structure, external quantum efficiency (EQE) was enhanced from 18.3% to 21.9%. This novel and simple device architecture adjusting intermolecular interaction based on molecular geometry between ET and Pt(II) complex provides a solution to materials limitations in WOLEDs. © 2024 Elsevier B.V. | - |
dc.language | 영어 | - |
dc.language.iso | ENG | - |
dc.publisher | Elsevier B.V. | - |
dc.title | Highly efficient white organic Light-Emitting diodes utilizing intermolecular interaction based on molecular geometry between host and deep blue Pt(Ⅱ) complex | - |
dc.type | Article | - |
dc.publisher.location | 스위스 | - |
dc.identifier.doi | 10.1016/j.cej.2024.150294 | - |
dc.identifier.scopusid | 2-s2.0-85188522492 | - |
dc.identifier.wosid | 001217935800001 | - |
dc.identifier.bibliographicCitation | Chemical Engineering Journal, v.487 | - |
dc.citation.title | Chemical Engineering Journal | - |
dc.citation.volume | 487 | - |
dc.type.docType | Article | - |
dc.description.isOpenAccess | N | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Engineering | - |
dc.relation.journalWebOfScienceCategory | Engineering, Environmental | - |
dc.relation.journalWebOfScienceCategory | Engineering, Chemical | - |
dc.subject.keywordPlus | EMISSION | - |
dc.subject.keywordPlus | EXCIPLEX | - |
dc.subject.keywordPlus | MANIPULATION | - |
dc.subject.keywordPlus | DESIGN | - |
dc.subject.keywordPlus | OLEDS | - |
dc.subject.keywordPlus | TADF | - |
dc.subject.keywordAuthor | Tandem | - |
dc.subject.keywordAuthor | White organic light-emitting diodes | - |
dc.subject.keywordAuthor | π-π interaction | - |
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