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Park, Ji Yong
분자활성 촉매반응 연구단
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High-Efficiency Diphenylpyrimidine Derivatives Blue Thermally Activated Delayed Fluorescence Organic Light-Emitting Diodes

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dc.contributor.authorSunyoung Sohn-
dc.contributor.authorMin Woo Ha-
dc.contributor.authorJiyong Park-
dc.contributor.authorYoo-Heon Kim-
dc.contributor.authorHyungju Ahn-
dc.contributor.authorSungjune Jung-
dc.contributor.authorSoon-Ki Kwon-
dc.contributor.authorYun-Hi Kim-
dc.date.accessioned2020-12-22T03:02:56Z-
dc.date.accessioned2020-12-22T03:02:56Z-
dc.date.available2020-12-22T03:02:56Z-
dc.date.available2020-12-22T03:02:56Z-
dc.date.created2020-06-12-
dc.date.issued2020-05-
dc.identifier.issn2296-2646-
dc.identifier.urihttps://pr.ibs.re.kr/handle/8788114/7865-
dc.description.abstract© Copyright © 2020 Sohn, Ha, Park, Kim, Ahn, Jung, Kwon and Kim.Organic light-emitting diodes with thermally activated delayed fluorescence emitter have been developed with highly twisted donor–acceptor configurations and color-pure blue emitters. Synthesized 4-(4-(4,6-diphenylpyrimidin-2-yl)phenyl)-10H-spiro[acridine-9,9′-fluorene] (4,6-PhPMAF) doped device with spiroacridine as a donor unit and diphenylpyrimidine as acceptor exhibits the device characteristics such as the luminescence, external quantum efficiencies, current efficiencies, and power efficiencies corresponding to 213 cd/m2, 2.95%, 3.27 cd/A, and 2.94 lm/W with Commission International de l'Eclairage (CIE) coordinates of (0.15, 0.11) in 4,6-PhPMAF-doped DPEPO emitter. The reported 10-(4-(2,6-diphenylpyrimidin-4-yl)phenyl)-10H-spiro[acridine-9,9′-fluorene] (2,6-PhPMAF) doped device exhibit high device performance with 1,445 cd/m2, 12.38%, 19.6 cd/A, and 15.4 lm/W, which might be originated from increased internal quantum efficiency by up-converted triplet excitons to the singlet state with relatively smaller ΔEST of 0.17 eV and higher reverse intersystem crossing rate (kRISC) of 1.0 ×108/s in 2,6-PhPMAF than 0.27 eV and 3.9 ×107/s in 4,6-PhPMAF. Despite low performance of 4,6-PhPMAF doped device, synthesized 4,6-PhPMAF has better color purity as a deep-blue emission with y axis (0.11) than reported 2,6-PhPMAF with y axis (0.19) in CIE coordinate. The synthesized 4,6-PhPMAF has higher thermal stability of any transition up to 300°C and decomposition temperature with only 5% weight loss in 400°C than reported 2,6-PhPMAF. The maximum photoluminescence emission of 4,6-PhPMAF in various solvents appeared at 438 nm, which has blue shift about 20 nm than that of 2,6-PhPMAF, which contributes deep-blue emission in synthesized 4,6-PhPMAF-
dc.description.uri1-
dc.language영어-
dc.publisherFRONTIERS MEDIA SA-
dc.subjectblue emitter-
dc.subjectdiphenylpyrimidine-
dc.subjectorganic light-emitting diode-
dc.subjectsinglet–triplet energy gap-
dc.subjectthermally activated delayed fluorescence-
dc.titleHigh-Efficiency Diphenylpyrimidine Derivatives Blue Thermally Activated Delayed Fluorescence Organic Light-Emitting Diodes-
dc.typeArticle-
dc.type.rimsART-
dc.identifier.wosid000537845300001-
dc.identifier.scopusid2-s2.0-85085523599-
dc.identifier.rimsid72272-
dc.contributor.affiliatedAuthorJiyong Park-
dc.identifier.doi10.3389/fchem.2020.00356-
dc.identifier.bibliographicCitationFrontiers in Chemistry, v.8-
dc.citation.titleFrontiers in Chemistry-
dc.citation.volume8-
dc.description.journalClass1-
dc.description.journalRegisteredClassscie-
dc.description.journalRegisteredClassscopus-
dc.subject.keywordAuthororganic light-emitting diode-
dc.subject.keywordAuthorthermally activated delayed fluorescence-
dc.subject.keywordAuthorblue emitter-
dc.subject.keywordAuthordiphenylpyrimidine-
dc.subject.keywordAuthorsinglet-triplet energy gap-
Appears in Collections:
Center for Catalytic Hydrocarbon Functionalizations(분자활성 촉매반응 연구단) > 1. Journal Papers (저널논문)
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