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Article: Highly Efficient Orange and Warm White Phosphorescent OLEDs Based on a Host Material with a Carbazole-Fluorenyl Hybrid

TitleHighly Efficient Orange and Warm White Phosphorescent OLEDs Based on a Host Material with a Carbazole-Fluorenyl Hybrid
Authors
Issue Date2014
PublisherWILEY-VCH Verlag GmbH & Co. KGaA.
Citation
Chemistry – An Asian Journal , 2014, v. 9, p. 1500–1505 How to Cite?
AbstractA new carbazole–fluorenyl hybrid compound, 3,3′(2,7-di(naphthaline-2-yl)-9H-fluorene-9,9-diyl)bis(9-phenyl-9H-carbazole) (NFBC) was synthesized and characterized. The compound exhibits blue-violet emission both in solution and in film, with peaks centered at 404 and 420 nm. In addition to the application as a blue emitter, NFBC is demonstrated to be a good host for phosphorescent dopants. By doping Ir(2-phq)3 in NFBC, a highly efficient orange organic light-emitting diode (OLED) with a maximum efficiency of 32 cd A−1 (26.5 Lm W−1) was obtained. Unlike most phosphorescent OLEDs, the device prepared in our study shows little efficiency roll-off at high brightness and maintains current efficiencies of 31.9 and 26.8 cd A−1 at a luminance of 1000 and 10 000 cd m−2, respectively. By using NFBC simultaneously as a blue fluorescence emitter and as a host for a phosphorescent dopant, a warm white OLED with a maximum efficiency of 22.9 Lm W−1 (21.9 cd A−1) was also obtained.
Persistent Identifierhttp://hdl.handle.net/10722/200488

 

DC FieldValueLanguage
dc.contributor.authorDu, Xen_US
dc.contributor.authorHuang, Yen_US
dc.contributor.authorTao, Sen_US
dc.contributor.authorYang, Xen_US
dc.contributor.authorWu, Cen_US
dc.contributor.authorWei, Hen_US
dc.contributor.authorChan, MYen_US
dc.contributor.authorYam, VWWen_US
dc.contributor.authorLee, CSen_US
dc.date.accessioned2014-08-21T06:48:43Z-
dc.date.available2014-08-21T06:48:43Z-
dc.date.issued2014en_US
dc.identifier.citationChemistry – An Asian Journal , 2014, v. 9, p. 1500–1505en_US
dc.identifier.urihttp://hdl.handle.net/10722/200488-
dc.description.abstractA new carbazole–fluorenyl hybrid compound, 3,3′(2,7-di(naphthaline-2-yl)-9H-fluorene-9,9-diyl)bis(9-phenyl-9H-carbazole) (NFBC) was synthesized and characterized. The compound exhibits blue-violet emission both in solution and in film, with peaks centered at 404 and 420 nm. In addition to the application as a blue emitter, NFBC is demonstrated to be a good host for phosphorescent dopants. By doping Ir(2-phq)3 in NFBC, a highly efficient orange organic light-emitting diode (OLED) with a maximum efficiency of 32 cd A−1 (26.5 Lm W−1) was obtained. Unlike most phosphorescent OLEDs, the device prepared in our study shows little efficiency roll-off at high brightness and maintains current efficiencies of 31.9 and 26.8 cd A−1 at a luminance of 1000 and 10 000 cd m−2, respectively. By using NFBC simultaneously as a blue fluorescence emitter and as a host for a phosphorescent dopant, a warm white OLED with a maximum efficiency of 22.9 Lm W−1 (21.9 cd A−1) was also obtained.en_US
dc.languageengen_US
dc.publisherWILEY-VCH Verlag GmbH & Co. KGaA.en_US
dc.relation.ispartofChemistry – An Asian Journalen_US
dc.titleHighly Efficient Orange and Warm White Phosphorescent OLEDs Based on a Host Material with a Carbazole-Fluorenyl Hybriden_US
dc.typeArticleen_US
dc.identifier.emailChan, MY: chanmym@hku.hken_US
dc.identifier.emailYam, VWW: wwyam@hku.hken_US
dc.identifier.authorityChan, MY=rp00666en_US
dc.identifier.authorityYam, VWW=rp00822en_US
dc.identifier.hkuros234112en_US
dc.identifier.volume9en_US
dc.identifier.spage1500–1505en_US
dc.identifier.epage1500–1505en_US
dc.publisher.placeWeinheimen_US

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