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High-Efficient White Organic Light-Emitting Diodes Using the Two Different Blue Fluorescent Emitters

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The authors have demonstrated white organic light-emitting diodes (WOLEDs) using the two blue fluorescent emitters, 4″-(2,2-diphenylvinyl)-1-[4-(N,N-diphenylamino)-styryl]-terphenyl (PVAS-tPh) and 1,4-Bis[2-(7-N-diphenyamino-2-(9,9-diethyl-9H-fluoren-2-yl)) vinyl] benzene (DAF-ph) and the red and green phosphorescent emitters, bis(5-benzoyl-2-phenylpyridinato-C, N)iridium(III) (acetylacetonate) ((Bzppy)2 Ir(III)acac) and fac-tris(2-phenypyridine) iridium(III) (Ir(ppy)3), respectively. The two blue emitters were constituted for high-efficient WOLEDs. The structure optimized device showed power efficiency of 2.3 times higher than that of control device and had the maximum luminance of 36 300 cd/m2 at 13 V and the maximum power efficiency of 32.2 lm/W at 0.017 mA/cm2, respectively.
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Document Type: Research Article

Publication date: 01 October 2008

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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