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Browsing by Author "Wu, Chung-Ming"

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    Enhancement on the efficiency and contrast of phosphorescent white organic light-emitting diodes
    (2007-01-01)
    Li, Jian-Feng
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    Su, Shui-Hsiang
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    Wu, Chung-Ming
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    Hwang, Kao-Shing
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    Yokoyama, Meiso
    High efficiency and high contrast phosphorescent white organic light-emitting diodes (WOLEDs) using a zinc selenide (ZnSe) buffer layer and a copper phthalocyanine (Cupc)/ titanium oxide phthalocyanine (TiOPc) anti-reflection layer have been fabricated and investigated. The contrast ratio of the device with a ZnSe and a CuPc/TiOPc layer is about double that of the conventional device. Furthermore, the power efficiency of the proposed device is higher than the conventional device.