Impact of boryl acceptors in para-acridine-appended triarylboron emitters on blue thermally activated delayed fluorescence OLEDs

Cited 9 time in webofscience Cited 0 time in scopus
  • Hit : 239
  • Download : 0
DC FieldValueLanguage
dc.contributor.authorLee, Young Hoonko
dc.contributor.authorLee, Donggyunko
dc.contributor.authorLee, Taehwanko
dc.contributor.authorLee, Junseungko
dc.contributor.authorJung, Jaehoonko
dc.contributor.authorYoo, Seunghyupko
dc.contributor.authorLee, Min Hyungko
dc.date.accessioned2021-04-20T04:10:12Z-
dc.date.available2021-04-20T04:10:12Z-
dc.date.created2021-04-19-
dc.date.issued2021-04-
dc.identifier.citationDYES AND PIGMENTS, v.188-
dc.identifier.issn0143-7208-
dc.identifier.urihttp://hdl.handle.net/10203/282469-
dc.description.abstractTwo pairs of para-donor-appended triarylboron compounds that are derived from 9,9-dialkylacridine (9,9-dimethylacridine (DMAC) or 9,9-diphenylacridine (DPAC)) donors and boryl (9-boraanthryl (BA) or dimesitylboryl (BMes(2))) acceptors are prepared and characterized. X-ray diffraction studies reveal that the BA ring is nearly orthogonal to the phenylene linker, whereas the BMes(2) moiety is tilted by ca. 60 degrees. The BA-containing compounds exhibit blue thermally activated delayed fluorescence (TADF) in both the solution and film states. In contrast, BMes(2)-containing compounds display normal blue fluorescence in solution, while TADF is induced in their films. The small Delta E-ST values (<0.1 eV) and high k(RISC) (ca. 10(6) s(-1)) of the doped films of the BA-containing compounds support the strong TADF character with the short-lived delayed fluorescence (tau(d) = 1.6-2.0 mu s). The theoretical studies along with the experimental results reveal that the electronic transitions in the BA-containing compounds proceed by the stronger charge transfer from the donor to the acceptor moieties than the BMes(2)-containing compounds. Pure to deep blue TADF-OLEDs are realized with all compounds as the dopants. The devices employing the DMAC donor-based emitters exhibit high device performance with a maximum external quantum efficiency (EQE) of 21.3%. However, lower EQEs (<12.8%) and severe efficiency roll-off are observed for the devices with the DPAC donor-based emitters.-
dc.languageEnglish-
dc.publisherELSEVIER SCI LTD-
dc.titleImpact of boryl acceptors in para-acridine-appended triarylboron emitters on blue thermally activated delayed fluorescence OLEDs-
dc.typeArticle-
dc.identifier.wosid000632564900004-
dc.identifier.scopusid2-s2.0-85101126570-
dc.type.rimsART-
dc.citation.volume188-
dc.citation.publicationnameDYES AND PIGMENTS-
dc.identifier.doi10.1016/j.dyepig.2021.109224-
dc.contributor.localauthorYoo, Seunghyup-
dc.contributor.nonIdAuthorLee, Young Hoon-
dc.contributor.nonIdAuthorLee, Taehwan-
dc.contributor.nonIdAuthorLee, Junseung-
dc.contributor.nonIdAuthorJung, Jaehoon-
dc.contributor.nonIdAuthorLee, Min Hyung-
dc.description.isOpenAccessN-
dc.type.journalArticleArticle-
dc.subject.keywordAuthorThermally activated delayed fluorescence-
dc.subject.keywordAuthorBlue OLEDs-
dc.subject.keywordAuthorPara-donor-acceptor-
dc.subject.keywordAuthorTriarylboron-
Appears in Collection
EE-Journal Papers(저널논문)
Files in This Item
There are no files associated with this item.
This item is cited by other documents in WoS
⊙ Detail Information in WoSⓡ Click to see webofscience_button
⊙ Cited 9 items in WoS Click to see citing articles in records_button

qr_code

  • mendeley

    citeulike


rss_1.0 rss_2.0 atom_1.0