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Tobias Schwab, Sylvio Schubert, Lars Müller-Meskamp, Karl Leo and Malte C. Gather Eliminating Micro-Cavity Effects in White Top-Emitting OLEDs by Ultra-Thin Metallic Top Electrodes Advanced Optical Materials 1

Article first published online: 23 OCT 2013 | DOI: 10.1002/adom.201300392

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The device efficiency and angular color stability of white top-emitting OLEDs is significantly improved by a decrease in thickness of the semitransparent silver cathode. The transmittance increases and the micro-cavity effects are reduced. Inserting a 2 nm gold wetting layer, the silver layer can be reduced to 5 nm achieving higher efficiency and comparable color stability to the bottom-emitting reference.

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