Browsing by Subject "Electroluminescent Devices"

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    Improved performance of organic light-emitting diodes with MoO3 interlayer by oblique angle deposition
    (Optical Society of America, 2011) Liu, S. W.; Divayana, Y.; Sun, X. W.; Wang, Y.; Leck, K. S.; Demir, Hilmi Volkan
    We fabricated and demonstrated improved organic light emitting diodes (OLEDs) in a thin film architecture of indium tin oxide (ITO)/molybdenum trioxide (MoO3) (20 nm)/ N,N'-Di(naphth-2-yl)-N,N'-diphenyl-benzidine (NPB) (50 nm)/tris-(8-hydroxyquinoline) (Alq(3)) (70 nm)/Mg:Ag (200 nm) using an oblique angle deposition technique by which MoO3 was deposited at oblique angles (theta) with respect to the surface normal. It was found that, without sacrificing the power efficiency of the device, the device current efficiency and external quantum efficiency were significantly enhanced at an oblique deposition angle of theta = 60 degrees for MoO3. (C) 2011 Optical Society of America