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dc.contributor.authorSu, HJen_US
dc.contributor.authorWu, FIen_US
dc.contributor.authorShu, CFen_US
dc.date.accessioned2014-12-08T15:38:31Z-
dc.date.available2014-12-08T15:38:31Z-
dc.date.issued2004-09-21en_US
dc.identifier.issn0024-9297en_US
dc.identifier.urihttp://dx.doi.org/10.1021/ma048797sen_US
dc.identifier.urihttp://hdl.handle.net/11536/26370-
dc.description.abstractWe have synthesized polyfluorene copolymers containing bis(2,2-diphenylvinyl)fluorene pendent groups attached orthogonally to the C-9 positions of fluorene units. These polymers possess high glass transition temperatures and good thermal stability. The results from PL studies indicate that most excitons formed in the polyfluorene backbone by direct photoexcitation are likely to migrate to lower-energy pendent groups, from which emission occurs. An organic light-emitting device using the copolymer PF4-DPVF as the emitting layer exhibits a voltage-independent and stable blue emission with color coordinates (0.15, 0.17) at 11 V, with a maximum brightness of 3137 cd/m(2) at 9 V (262 mA/cm(2)) and a maximum external quantum efficiency of 1.06%. In addition, we blended PF4-DPVF as the host material with 0.5 wt % of MEH-PPV to realize a white electroluminescence having CIE coordinates of (0.29,0.34) and a maximum brightness of 3258 cd/m(2) (119 mA/cm(2)). We demonstrate that both Forster energy transfer and direct charge trapping/recombination on the MEH-PPV guest are responsible for the observed EL.en_US
dc.language.isoen_USen_US
dc.titleTuning wavelength: Synthesis and characterization of spiro-DPVF-containing polyfluorenes and applications in organic light-emitting diodesen_US
dc.typeArticleen_US
dc.identifier.doi10.1021/ma048797sen_US
dc.identifier.journalMACROMOLECULESen_US
dc.citation.volume37en_US
dc.citation.issue19en_US
dc.citation.spage7197en_US
dc.citation.epage7202en_US
dc.contributor.department應用化學系zh_TW
dc.contributor.departmentDepartment of Applied Chemistryen_US
dc.identifier.wosnumberWOS:000223990200023-
dc.citation.woscount77-
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