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12 November 2007 Phosphorescent OLEDs with saturated colors
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In this paper, two approaches are demonstrated to narrow phosphorescent OLED (PHOLED) emission lineshapes to increase color saturation while keeping device high efficiency performance, which is critical for large area flat panel displays. One approach uses bottom-emissive microcavity structure in green and blue devices to achieve 22 nm full width half maximum (FWHM) emissions. The other approach is to reduce the natural width of the emission as exemplifying in a red device. A new NTSC red with 64 nm FWHM emission is reported. In a standard device, it has a luminous efficiency of 18.3 cd/A at 10 mA/cm2.
© (2007) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Brian D'Andrade, Vadim I. Adamovich, Michael S. Weaver, Chun Lin, Bin Ma, Peter B. Mackenzie, Ray Kwong, and Julie J. Brown "Phosphorescent OLEDs with saturated colors", Proc. SPIE 6655, Organic Light Emitting Materials and Devices XI, 66550G (12 November 2007);

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