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dc.contributor.authorChiang, CLen_US
dc.contributor.authorWu, MFen_US
dc.contributor.authorShu, CFen_US
dc.contributor.authorChen, CTen_US
dc.date.accessioned2019-04-03T06:47:15Z-
dc.date.available2019-04-03T06:47:15Z-
dc.date.issued2005-01-01en_US
dc.identifier.isbn0-8194-5587-3en_US
dc.identifier.issn0277-786Xen_US
dc.identifier.urihttp://dx.doi.org/10.1117/12.569483en_US
dc.identifier.urihttp://hdl.handle.net/11536/17600-
dc.description.abstractCrystallinic red fluorophores based on donor-acceptor substituted spirofluorene, i.e., PhSPDCV show strong fluorescence in solution (Phi(f) - 70%) as well as in solid state (Phi(f) > 30 %). Non-doped red OLEDs fabricated with PhSPDCV exhibit authentic red (CIE, x = 0.65, y = 0.35) electroluminescence with brightness over 12,000 cd m(-2) (or > 600 cd m(-2) at 20 mA cm(-2)) and remarkable external quantum efficiency as high as 3.6%. On the other hand, the bis-substituted derivatives of spirofluorene BisPhSPDCV show relatively weak fluorescence both in solution (Phi(f) < 20 %) and in solid state (Phi(f) < 10 %). Although saturated red electroluminescence (CIE, x = 0.65, y = 0.34) is also observed, non-doped red OLED containing BisPhSPDCV performs much worse than PhSPDCV OLEDs. Both PhSPDCV and BisPhSPDCV are not amorphous forming loosely packed crystallinic materials in solid state with no intimate pi-pi interaction.en_US
dc.language.isoen_USen_US
dc.subjectreden_US
dc.subjectnon-dopeden_US
dc.subjectorganic light-emitting diodeen_US
dc.subjectfluoreneen_US
dc.subjectspiroen_US
dc.titleRed fluorenes as the efficient host emitter for non-doped red organic light-emitting diodesen_US
dc.typeProceedings Paperen_US
dc.identifier.doi10.1117/12.569483en_US
dc.identifier.journalLight-Emitting Diode Materials and Devicesen_US
dc.citation.volume5632en_US
dc.citation.spage80en_US
dc.citation.epage87en_US
dc.contributor.department應用化學系zh_TW
dc.contributor.departmentDepartment of Applied Chemistryen_US
dc.identifier.wosnumberWOS:000228210000010en_US
dc.citation.woscount3en_US
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