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- W2892357495 abstract "This paper reports on the phase-separated film morphology and electroluminescence (EL) of a polyfluorene, poly[9,9-di-(2'-ethylhexyl)fluorenyl-2,7-diyl], blended with the hole transport material, poly[(9,9-dioctylfluorenyl-2,7-diyl)-co-(N,N'-bis(4-butylphenyl-1,1'-biphenylene-4,4'-diamine))]. The film morphology changes remarkably with the blend ratio. Other factors like polymer solution concentration, substrate and film thickness could also influence the film morphology. The addition of the hole-transporting polymer to the host polymer improved device properties of light-emitting diodes (LEDs). The maximum luminance achieved was 884 cd/m 2 . The maximum external quantum efficiency of the blended polyfluorene devices was 0.1%, which is more than three times higher than that of the pristine polyfluorene LEDs. The introduction of the hole-transporting polymer also modifies the EL spectrum. For the blend-based devices, the EL peaked at 504 nm, having a blue shift of 33 nm compared to that of the single polymer based devices. Phase-separated domains, or interactions at their interfaces, may play a role in the improved device performance." @default.
- W2892357495 created "2018-09-27" @default.
- W2892357495 creator A5062512954 @default.
- W2892357495 date "2010-11-01" @default.
- W2892357495 modified "2023-09-26" @default.
- W2892357495 title "Film Morphology and Electroluminescence of Poly[9,9-di-(2'-ethylhexyl) fuorenyl-2,7-diyl] Blended with a Hole Transporting Polymer" @default.
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- W2892357495 doi "https://doi.org/10.1177/096739111001800901" @default.
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