Highly efficient bipolar host materials towards solution-processable blue and green thermally activated delayed fluorescence organic light emitting diodes
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Godumala, Mallesham | - |
dc.contributor.author | Choi, Suna | - |
dc.contributor.author | Kim, Seong Keun | - |
dc.contributor.author | Kim, Si Woo | - |
dc.contributor.author | Kwon, Jang Hyuk | - |
dc.contributor.author | Cho, Min Ju | - |
dc.contributor.author | Choi, Dong Hoon | - |
dc.date.accessioned | 2021-09-02T05:14:59Z | - |
dc.date.available | 2021-09-02T05:14:59Z | - |
dc.date.created | 2021-06-19 | - |
dc.date.issued | 2018-10-07 | - |
dc.identifier.issn | 2050-7526 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/72508 | - |
dc.description.abstract | New versatile host materials with good solubility in common organic solvents are greatly desired to promote solution-processable thermally activated delayed fluorescence organic light-emitting diodes. This paper describes the design and synthesis of two new host materials, namely 3'-(9H-carbazol-9-yl)[ 1,1'-biphenyl]-3,5-diylbis(diphenylphosphine oxide) (CDPO) and 3',5'-di-(9H-carbazol-9-yl)-[1,1'-biphenyl]- 3,5-diylbis (diphenylphosphine oxide) (mCPDPO), featuring hole-transporting carbazole and electron-transporting diphenylphosphine oxide (DPO) entities. The donor strength was varied to a constant n-type DPO core to tune the functional properties. The detailed studies proved that the resulting two new materials exhibit excellent solubility in common organic solvents, high triplet energy (>2.80eV), high glass transition temperature (up to 133 degrees C), and good bipolar electronic nature. Consequently, both compounds were used as hosts in solution-processable blue and green thermally activated delayed fluorescence (TADF) OLEDs. In particular, the devices using mCPDPO as a host in the emissive layer showed outstanding performance with a maximum current efficiency, power efficiency, and external quantum efficiency of 35.3 cd A(-1), 17.0 lm W-1 and 15.4% in the blue-emitting diode, and 61.5 cd A(-1), 29.7 lm W-1 and 18.8% in the green-emitting diode, respectively. These results corroborated the potential of carbazole-phosphine oxide derivatives as host materials in solution-processable blue and green TADF OLEDs. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | ROYAL SOC CHEMISTRY | - |
dc.subject | EXTERNAL QUANTUM EFFICIENCY | - |
dc.subject | ELECTROPHOSPHORESCENT DEVICES | - |
dc.subject | PHOSPHORESCENT DEVICES | - |
dc.subject | ROLL-OFF | - |
dc.subject | OLEDS | - |
dc.subject | EMITTERS | - |
dc.subject | MOLECULES | - |
dc.subject | DESIGN | - |
dc.subject | POSITION | - |
dc.subject | HYBRID | - |
dc.title | Highly efficient bipolar host materials towards solution-processable blue and green thermally activated delayed fluorescence organic light emitting diodes | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Choi, Dong Hoon | - |
dc.identifier.doi | 10.1039/c8tc02649a | - |
dc.identifier.scopusid | 2-s2.0-85054137948 | - |
dc.identifier.wosid | 000449750600018 | - |
dc.identifier.bibliographicCitation | JOURNAL OF MATERIALS CHEMISTRY C, v.6, no.37, pp.10000 - 10009 | - |
dc.relation.isPartOf | JOURNAL OF MATERIALS CHEMISTRY C | - |
dc.citation.title | JOURNAL OF MATERIALS CHEMISTRY C | - |
dc.citation.volume | 6 | - |
dc.citation.number | 37 | - |
dc.citation.startPage | 10000 | - |
dc.citation.endPage | 10009 | - |
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 | EXTERNAL QUANTUM EFFICIENCY | - |
dc.subject.keywordPlus | ELECTROPHOSPHORESCENT DEVICES | - |
dc.subject.keywordPlus | PHOSPHORESCENT DEVICES | - |
dc.subject.keywordPlus | ROLL-OFF | - |
dc.subject.keywordPlus | OLEDS | - |
dc.subject.keywordPlus | EMITTERS | - |
dc.subject.keywordPlus | MOLECULES | - |
dc.subject.keywordPlus | DESIGN | - |
dc.subject.keywordPlus | POSITION | - |
dc.subject.keywordPlus | HYBRID | - |
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.