Microcavity top-emitting organic light-emitting devices integrated with microlens arrays: Simultaneous enhancement of quantum efficiency, cd/A efficiency, color performances, and image resolution

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Abstract
A long bothering issue in microcavity organic light-emitting devices(OLEDs) is the difficulty to simultaneously achieve enhanced cd/A efficiency, enhanced external quantum efficiency, enhanced color saturation, and stable colors with viewing angles in the same device design. In this work, we show that microcavity top-emitting OLEDs integrated with microlenses may provide a universal approach for simultaneously achieving all these desired nice characteristics. Furthermore, the pixel blurring often occurring in employment of microlenses to conventional bottom-emitting OLEDs is significantly suppressed by combination of top-emitting microcavityOLEDs and microlenses.