Rational Design of Carbazole- and Carboline-Based Polymeric Host Materials for Realizing High-Efficiency Solution-Processed Thermally Activated Delayed Fluorescence Organic Light-Emitting Diode
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Hwang, Jinhyo | - |
dc.contributor.author | Lee, Chiho | - |
dc.contributor.author | Jeong, Ji-Eun | - |
dc.contributor.author | Kim, Chae Yeong | - |
dc.contributor.author | Woo, Han Young | - |
dc.contributor.author | Park, Sungnam | - |
dc.contributor.author | Cho, Min Ju | - |
dc.contributor.author | Choi, Dong Hoon | - |
dc.date.accessioned | 2021-08-31T09:45:05Z | - |
dc.date.available | 2021-08-31T09:45:05Z | - |
dc.date.created | 2021-06-18 | - |
dc.date.issued | 2020-02-19 | - |
dc.identifier.issn | 1944-8244 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/57622 | - |
dc.description.abstract | Recently, various host materials have been developed for solution-processed thermally activated delayed fluorescent organic light-emitting diodes (TADF-OLEDs). Compared with small-molecule hosts, polymeric hosts are advantageous for inducing a uniform distribution and segregation of dopant molecules in the emissive layer without undesired large-scale phase separation. In this study, new polymer hosts were demonstrated, in which a bipolar conjugative moiety consisting of a carbazole (Cz) donor and an alpha-carboline (alpha-Cb) acceptor was bound to the polystyrene backbone through a non-conjugated linker. They exhibited high triplet energies of >2.8 eV, and their emission spectra overlapped with the absorption spectrum of a green TADF emitter, which allowed facile energy transfer from the polymeric host to the small-molecule dopants. High device performance was observed, with external quantum efficiencies (EQEs) of 13.65, 17.09, and 17.48% for solution-processed green TADF-OLEDs using PSCzCz, PSCzCb, and PSCbCz, respectively, as hosts for the EML. The EQEs of bipolar host (PSCzCb and PSCbCz)-based devices were higher than those of unipolar host (poly(N-vinylcarbazole) and PSCzCz)-based devices owing to the well-balanced charge-carrier transport. According to these results, the polymeric host bearing a bipolar Cz and a-Cb coupled moiety is a promising material for solution-processable TADF-OLEDs. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | AMER CHEMICAL SOC | - |
dc.subject | EXTERNAL QUANTUM EFFICIENCY | - |
dc.subject | BIPOLAR HOST | - |
dc.subject | DEEP-BLUE | - |
dc.subject | PHOTOPHYSICAL PROPERTIES | - |
dc.subject | PHOSPHINE OXIDE) | - |
dc.subject | TADF EMITTERS | - |
dc.subject | MAIN-CHAIN | - |
dc.subject | DEVICES | - |
dc.subject | IRIDIUM | - |
dc.subject | GREEN | - |
dc.title | Rational Design of Carbazole- and Carboline-Based Polymeric Host Materials for Realizing High-Efficiency Solution-Processed Thermally Activated Delayed Fluorescence Organic Light-Emitting Diode | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Park, Sungnam | - |
dc.contributor.affiliatedAuthor | Choi, Dong Hoon | - |
dc.identifier.doi | 10.1021/acsami.9b20279 | - |
dc.identifier.scopusid | 2-s2.0-85080085248 | - |
dc.identifier.wosid | 000515214300068 | - |
dc.identifier.bibliographicCitation | ACS APPLIED MATERIALS & INTERFACES, v.12, no.7, pp.8485 - 8494 | - |
dc.relation.isPartOf | ACS APPLIED MATERIALS & INTERFACES | - |
dc.citation.title | ACS APPLIED MATERIALS & INTERFACES | - |
dc.citation.volume | 12 | - |
dc.citation.number | 7 | - |
dc.citation.startPage | 8485 | - |
dc.citation.endPage | 8494 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Science & Technology - Other Topics | - |
dc.relation.journalResearchArea | Materials Science | - |
dc.relation.journalWebOfScienceCategory | Nanoscience & Nanotechnology | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Multidisciplinary | - |
dc.subject.keywordPlus | EXTERNAL QUANTUM EFFICIENCY | - |
dc.subject.keywordPlus | BIPOLAR HOST | - |
dc.subject.keywordPlus | DEEP-BLUE | - |
dc.subject.keywordPlus | PHOTOPHYSICAL PROPERTIES | - |
dc.subject.keywordPlus | PHOSPHINE OXIDE) | - |
dc.subject.keywordPlus | TADF EMITTERS | - |
dc.subject.keywordPlus | MAIN-CHAIN | - |
dc.subject.keywordPlus | DEVICES | - |
dc.subject.keywordPlus | IRIDIUM | - |
dc.subject.keywordPlus | GREEN | - |
dc.subject.keywordAuthor | carbazole | - |
dc.subject.keywordAuthor | carboline | - |
dc.subject.keywordAuthor | polymeric host | - |
dc.subject.keywordAuthor | thermally activated delayed fluorescent | - |
dc.subject.keywordAuthor | solution process | - |
dc.subject.keywordAuthor | polymer light-emitting diode | - |
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.
(02841) 서울특별시 성북구 안암로 14502-3290-1114
COPYRIGHT © 2021 Korea University. All Rights Reserved.
Certain data included herein are derived from the © Web of Science of Clarivate Analytics. All rights reserved.
You may not copy or re-distribute this material in whole or in part without the prior written consent of Clarivate Analytics.