Achievement of high efficiency with extremely low efficiency roll-off in solution-processed thermally activated delayed fluorescence OLEDs manufactured using xanthone-based bipolar host materials
DC Field | Value | Language |
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dc.contributor.author | Kim, Chae Yeong | - |
dc.contributor.author | Lee, Chiho | - |
dc.contributor.author | Kim, Hyung Jong | - |
dc.contributor.author | Hwang, Jinhyo | - |
dc.contributor.author | Godumala, Mallesham | - |
dc.contributor.author | Jeong, Ji-Eun | - |
dc.contributor.author | Woo, Young Han | - |
dc.contributor.author | Cho, Min Ju | - |
dc.contributor.author | Park, Sungnam | - |
dc.contributor.author | Choi, Dong Hoon | - |
dc.date.accessioned | 2021-08-30T23:14:01Z | - |
dc.date.available | 2021-08-30T23:14:01Z | - |
dc.date.created | 2021-06-19 | - |
dc.date.issued | 2020-05-28 | - |
dc.identifier.issn | 2050-7526 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/55630 | - |
dc.description.abstract | The use of soluble host materials and thermally activated delayed fluorescence (TADF) emitters is indispensable for developing high-efficiency organic light-emitting diodes (OLEDs) by cost-effective solution processes. In this study, two bipolar hosts were designed as structural isomers, namely 3-(3,5-di(9H-carbazol-9-yl)phenyl)-9H-xanthen-9-one (Xp-mCP) and 2-(3,5-di(9H-carbazol-9-yl)phenyl)-9H-xanthen-9-one (Xm-mCP). The two host materials were synthesized by combining the unipolar host, 1,3-di(9H-carbazol-9-yl)benzene (mCP) with 9H-xanthen-9-one as an electron-accepting moiety. The two hosts exhibit good solubility in various organic solvents and high triplet energy (E-T = 2.67 eV for Xp-mCP and E-T = 2.82 eV for Xm-mCP), which renders them suitable for t4CzIPN-containing solution-processable green TADF-OLEDs. The maximum external quantum efficiency (EQE) values were 19.3% and 22.0% for Xp-mCP- and Xm-mCP-based green TADF-OLED, respectively. Among them, the device comprising Xm-mCP showed an excellent efficiency roll-off behavior by displaying only a 4.5% decrease and 11.4% decrease at 1000 cd m(-2) and 2000 cd m(-2), respectively. These results show the significant potential of xanthone-mCP host materials to develop solution-processable OLED technologies. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | ROYAL SOC CHEMISTRY | - |
dc.subject | LIGHT-EMITTING-DIODES | - |
dc.subject | ORGANIC EMITTERS | - |
dc.subject | MOLECULAR DESIGN | - |
dc.subject | HIGH-PERFORMANCE | - |
dc.subject | BLUE | - |
dc.subject | GREEN | - |
dc.subject | SINGLET | - |
dc.subject | EMISSION | - |
dc.subject | ACCEPTOR | - |
dc.subject | TADF | - |
dc.title | Achievement of high efficiency with extremely low efficiency roll-off in solution-processed thermally activated delayed fluorescence OLEDs manufactured using xanthone-based bipolar host materials | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Park, Sungnam | - |
dc.contributor.affiliatedAuthor | Choi, Dong Hoon | - |
dc.identifier.doi | 10.1039/d0tc01144d | - |
dc.identifier.scopusid | 2-s2.0-85085627129 | - |
dc.identifier.wosid | 000538108200014 | - |
dc.identifier.bibliographicCitation | JOURNAL OF MATERIALS CHEMISTRY C, v.8, no.20, pp.6780 - 6787 | - |
dc.relation.isPartOf | JOURNAL OF MATERIALS CHEMISTRY C | - |
dc.citation.title | JOURNAL OF MATERIALS CHEMISTRY C | - |
dc.citation.volume | 8 | - |
dc.citation.number | 20 | - |
dc.citation.startPage | 6780 | - |
dc.citation.endPage | 6787 | - |
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 | ORGANIC EMITTERS | - |
dc.subject.keywordPlus | MOLECULAR DESIGN | - |
dc.subject.keywordPlus | HIGH-PERFORMANCE | - |
dc.subject.keywordPlus | BLUE | - |
dc.subject.keywordPlus | GREEN | - |
dc.subject.keywordPlus | SINGLET | - |
dc.subject.keywordPlus | EMISSION | - |
dc.subject.keywordPlus | ACCEPTOR | - |
dc.subject.keywordPlus | TADF | - |
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