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dc.contributor.authorHsu, Fang-Mingen_US
dc.contributor.authorChien, Chen-Hanen_US
dc.contributor.authorHsieh, Ya-Jouen_US
dc.contributor.authorWu, Chen-Haoen_US
dc.contributor.authorShu, Ching-Fongen_US
dc.contributor.authorLiu, Shun-Weien_US
dc.contributor.authorChen, Chin-Tien_US
dc.date.accessioned2014-12-08T15:10:18Z-
dc.date.available2014-12-08T15:10:18Z-
dc.date.issued2009en_US
dc.identifier.issn0959-9428en_US
dc.identifier.urihttp://hdl.handle.net/11536/7871-
dc.identifier.urihttp://dx.doi.org/10.1039/b910292ben_US
dc.description.abstractWe have fabricated highly efficient red phosphorescent organic light-emitting diodes (PHOLEDs) incorporating a bipolar host material, 2,7-bis(phenylsulfonyl)-9-[4-(N,N-diphenylamino)phenyl]-9-phenylfluorene (SAF), doped with 7 wt% tris(1-phenylisoquinolinolato-C(2),N)iridium(III) [Ir(piq)(3)]. Attaching the electron-donating (p-type) triphenylamine group onto the electron-accepting (n-type) 2,7-bis(phenylsulfonyl)fluorene segment (through the C9 position of the fluorene unit) imparts SAF with good morphological stability, high triplet energy gap (ET), bipolar transporting ability, and matching energy levels with adjacent carrier-transporting layers. Consequently, the SAF-based red-PHOLED exhibited a very low turn-on voltage (2.4 V) and high electroluminescence efficiencies of 15.8% and 22.0 lm W(-1), superior to those of the corresponding device incorporating a conventional host material, 4,4'-N,N'-dicarbazolbiphenyl (CBP; 3.2 V, 8.5%, and 8.4 lm W(-1), respectively). At a practical brightness of 1000 cd m(-2), the efficiencies of the SAF-based red-PHOLED remained high (13.1%, 14.4 lm W(-1)).en_US
dc.language.isoen_USen_US
dc.titleHighly efficient red electrophosphorescent device incorporating a bipolar triphenylamine/bisphenylsulfonyl-substituted fluorene hybrid as the hosten_US
dc.typeArticleen_US
dc.identifier.doi10.1039/b910292ben_US
dc.identifier.journalJOURNAL OF MATERIALS CHEMISTRYen_US
dc.citation.volume19en_US
dc.citation.issue42en_US
dc.citation.spage8002en_US
dc.citation.epage8008en_US
dc.contributor.department應用化學系zh_TW
dc.contributor.departmentDepartment of Applied Chemistryen_US
dc.identifier.wosnumberWOS:000270942100029-
dc.citation.woscount29-
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