Abstract

Al<sup>2</sup>O<sup>3</sup>/ZrO<sup>2</sup>multi-layers are used to encapsulate organic light emitting diodes (OLEDs). OLED lifetimes of more than 20,000 h are achieved. For top-emitting OLEDs, the encapsulation layer increases the external quantum efficiency by more than 40%.

© 2010 The Optical Society

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