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UV-Vis Absorption and Photoluminescence Characteristics of Doped Organic Solid Depend on its Doping Concentration

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We've studied the influence of doping concentration with UV-Vis absorption spectra analysis and their photoluminescence (PL) characteristics. With applying variations of doping concentration, co-doped organic solid films were prepared. The host material was Tris-(8-hydroxyquinoline) aluminum and the two dopants were N,N′-dimethyl-quinacridone and 10-(2-Benzothiazolyl)-2,3,6,7-tetrahydro-1,1,7,7,-tetramethyl-1H,5H,11H-[1]benzopyrano[6,7,8-ij]quinolizin-11-one. The PL characteristics showed its dependence on doping concentration, as doping concentration changes the PL changed also, and it showed certain trend in intensity. The trend was in agreement with previous study of single-doped and co-doped organic light-emitting diode (OLED) in previous works. This shows PL could be an effective way for estimate the performance of doped OLED.
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Document Type: Research Article

Publication date: February 1, 2009

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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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