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- W2008045442 abstract "We studied the emission characteristics of white phosphorescent organic light-emitting diodes (PHOLEDs), which were fabricated using a two-wavelength method. To optimize emission characteristics of white PHOLEDs, white PHOLEDs with red/blue, blue/red and red/blue/red emitting layer (EML) structures were fabricated using a host-dopant system. In case of white PHOLEDs with red/blue structure, the best efficiency was obtained at a structure of red (15 nm)/blue (15 nm). But the emission color was blue-shifted white. In case of white PHOLEDs with blue/red structure, the better color purity and efficiency were observed at a blue (29 nm)/red (1 nm) structure. For additional improvement of color purity in white PHOLEDs with blue (29 nm)/red (1 nm) EMLs, we fabricated white PHOLEDs with red (1 nm)/blue (28 nm)/red (1 nm) structure. The current efficiency, external quantum efficiency, and CIE (x, y) coordinate were 27.2 cd/A, 15.1%, and (0.382, 0.369) at 1,000 <TEX>$cd/m^2$</TEX>, respectively." @default.
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- W2008045442 date "2012-06-01" @default.
- W2008045442 modified "2023-10-02" @default.
- W2008045442 title "Emission Characteristics of White PHOLEDs with Different Emitting Layer Structures" @default.
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- W2008045442 doi "https://doi.org/10.4313/jkem.2012.25.6.456" @default.
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