Novel blue multiresonance thermally activated delayed fluorescence host materials, including Ge-based bulky groups
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Park, Sangwook | - |
dc.contributor.author | Kwon, Hyukmin | - |
dc.contributor.author | Lee, Hayoon | - |
dc.contributor.author | Lee, Kiho | - |
dc.contributor.author | Kang, Seokwoo | - |
dc.contributor.author | Kim, Ki Ju | - |
dc.contributor.author | Kim, Taekyung | - |
dc.contributor.author | Park, Jongwook | - |
dc.date.accessioned | 2024-04-18T06:30:25Z | - |
dc.date.available | 2024-04-18T06:30:25Z | - |
dc.date.issued | 2024-03-21 | - |
dc.identifier.issn | 2050-7526 | - |
dc.identifier.issn | 2050-7534 | - |
dc.identifier.uri | https://scholarworks.bwise.kr/hongik/handle/2020.sw.hongik/33025 | - |
dc.description.abstract | We synthesized three materials, namely, TDBA-Ge, mTDBA-Ge, and mTDBA-2Ge, as blue host emitters. These materials incorporate a tetraphenylgermanium (TPG) group with a germanium atom into the main backbone of 5,9-dioxa-13b-boranaphtho[3,2,1-de]anthracene (DOBNA), demonstrating multiple-resonance-induced thermally activated delayed fluorescence (MR-TADF). All three materials exhibited high thermal stability with a glass transition temperature (Tg) exceeding 100 degrees C. The increased molecular distance also demonstrated the inhibition of self-quenching between molecules in the packing. All three materials showed Delta EST values within 0.3 eV, confirming their potential for MR-TADF characteristics. Especially, mTDBA-2Ge exhibited the lowest Delta EST value of 0.11 eV among the three materials. When these host materials were doped with the conventional dopant nu-DABNA, efficient energy transfer between the two materials was observed, and the resulting device efficiency was confirmed. In comparison to TDBA-Ph, which lacks the TPG moiety and contains only phenyl groups, an approximately 1.5-1.8-fold increase in external quantum efficiency max (EQEmax) was observed. Among the three materials, mTDBA-2Ge exhibited the highest efficiency, with an EQEmax of 24.41%. We synthesized three materials, namely, TDBA-Ge, mTDBA-Ge, and mTDBA-2Ge, as blue host emitters. Among the three materials, mTDBA-2Ge exhibited the highest efficiency, with an EQEmax of 24.41%. | - |
dc.format.extent | 8 | - |
dc.language | 영어 | - |
dc.language.iso | ENG | - |
dc.publisher | ROYAL SOC CHEMISTRY | - |
dc.title | Novel blue multiresonance thermally activated delayed fluorescence host materials, including Ge-based bulky groups | - |
dc.type | Article | - |
dc.publisher.location | 영국 | - |
dc.identifier.doi | 10.1039/d4tc00288a | - |
dc.identifier.scopusid | 2-s2.0-85187368015 | - |
dc.identifier.wosid | 001178198500001 | - |
dc.identifier.bibliographicCitation | JOURNAL OF MATERIALS CHEMISTRY C, v.12, no.12, pp 4384 - 4391 | - |
dc.citation.title | JOURNAL OF MATERIALS CHEMISTRY C | - |
dc.citation.volume | 12 | - |
dc.citation.number | 12 | - |
dc.citation.startPage | 4384 | - |
dc.citation.endPage | 4391 | - |
dc.type.docType | Article | - |
dc.description.isOpenAccess | Y | - |
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 | EFFICIENT | - |
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.
94, Wausan-ro, Mapo-gu, Seoul, 04066, Korea02-320-1314
COPYRIGHT 2020 HONGIK 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.