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Article: Distinct electroluminescent properties of triphenylamine derivatives in blue organic light-emitting devices

TitleDistinct electroluminescent properties of triphenylamine derivatives in blue organic light-emitting devices
Authors
Issue Date2011
PublisherRoyal Society of Chemistry. The Journal's web site is located at http://www.rsc.org/Publishing/Journals/jm/index.asp
Citation
Journal Of Materials Chemistry, 2011, v. 21 n. 4, p. 1206-1211 How to Cite?
AbstractTwo highly fluorescent triphenylamines (TPA) end-capped respectively with one and three pyrene arms, namely N,N-diphenyl-4-(pyren-1-yl)aniline (PyTPA) and 4,4′,4′′-trispyrenylphenylamine (TPyPA), have been designed, synthesized and applied as hole-transporting emitters in organic light-emitting devices (OLEDs). While the two compounds have similar chemical structures (the only difference being the number of pyrene arms), devices based on them show distinct electroluminescent characteristics. PyTPA-based devices exhibit intense deep-blue emission with Commission Internationale de L'Eclairage coordinates (CIE) of (0.14, 0.11); whilst TPyPA-based devices emit white light with CIE of (0.31, 0.35). It is considered that the three electron-donating pyrene arms in TPyPA increase its electron-donating ability, which facilitates exciplex formation with the electron-transporter. This gives rise to a yellow exciplex emission and thus shifts the electroluminescence from deep-blue to white. More importantly, both devices can operate at record-low driving voltages (<4V at 20 mA cm -2), indicating the TPA-cored emitters offer not only high luminance efficiencies, but also good hole-injection and transporting features. © 2011 The Royal Society of Chemistry.
Persistent Identifierhttp://hdl.handle.net/10722/168499
ISSN
2013 Impact Factor: 6.626
2015 SCImago Journal Rankings: 2.540
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorLai, SLen_US
dc.contributor.authorTong, QXen_US
dc.contributor.authorChan, MYen_US
dc.contributor.authorNg, TWen_US
dc.contributor.authorLo, MFen_US
dc.contributor.authorLee, STen_US
dc.contributor.authorLee, CSen_US
dc.date.accessioned2012-10-08T03:19:40Z-
dc.date.available2012-10-08T03:19:40Z-
dc.date.issued2011en_US
dc.identifier.citationJournal Of Materials Chemistry, 2011, v. 21 n. 4, p. 1206-1211en_US
dc.identifier.issn0959-9428en_US
dc.identifier.urihttp://hdl.handle.net/10722/168499-
dc.description.abstractTwo highly fluorescent triphenylamines (TPA) end-capped respectively with one and three pyrene arms, namely N,N-diphenyl-4-(pyren-1-yl)aniline (PyTPA) and 4,4′,4′′-trispyrenylphenylamine (TPyPA), have been designed, synthesized and applied as hole-transporting emitters in organic light-emitting devices (OLEDs). While the two compounds have similar chemical structures (the only difference being the number of pyrene arms), devices based on them show distinct electroluminescent characteristics. PyTPA-based devices exhibit intense deep-blue emission with Commission Internationale de L'Eclairage coordinates (CIE) of (0.14, 0.11); whilst TPyPA-based devices emit white light with CIE of (0.31, 0.35). It is considered that the three electron-donating pyrene arms in TPyPA increase its electron-donating ability, which facilitates exciplex formation with the electron-transporter. This gives rise to a yellow exciplex emission and thus shifts the electroluminescence from deep-blue to white. More importantly, both devices can operate at record-low driving voltages (<4V at 20 mA cm -2), indicating the TPA-cored emitters offer not only high luminance efficiencies, but also good hole-injection and transporting features. © 2011 The Royal Society of Chemistry.en_US
dc.languageengen_US
dc.publisherRoyal Society of Chemistry. The Journal's web site is located at http://www.rsc.org/Publishing/Journals/jm/index.aspen_US
dc.relation.ispartofJournal of Materials Chemistryen_US
dc.titleDistinct electroluminescent properties of triphenylamine derivatives in blue organic light-emitting devicesen_US
dc.typeArticleen_US
dc.identifier.emailChan, MY:chanmym@hku.hken_US
dc.identifier.authorityChan, MY=rp00666en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1039/c0jm02550jen_US
dc.identifier.scopuseid_2-s2.0-78651410816en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-78651410816&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume21en_US
dc.identifier.issue4en_US
dc.identifier.spage1206en_US
dc.identifier.epage1211en_US
dc.identifier.isiWOS:000286110400039-
dc.publisher.placeUnited Kingdomen_US
dc.identifier.scopusauthoridLai, SL=7402937153en_US
dc.identifier.scopusauthoridTong, QX=17347054500en_US
dc.identifier.scopusauthoridChan, MY=7402597725en_US
dc.identifier.scopusauthoridNg, TW=24822626900en_US
dc.identifier.scopusauthoridLo, MF=24332794500en_US
dc.identifier.scopusauthoridLee, ST=35468613000en_US
dc.identifier.scopusauthoridLee, CS=35364273600en_US

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