Optimized metasurface design for enhanced organic light-emitting diodes

We optimized the structural parameters of the metasurface (MS) for enhanced bottom-emitting organic light-emitting diodes (B-OLEDs). MS consists of mixed metallic nanoslot arrays. The performance of MS-integrated B-OLED is estimated by out-coupling efficiency and reflection of the ambient light. The layer thicknesses of the capping layer and the MS which affect the excitation of surface plasmon are optimized and the width and length of nanoslot are determined by reducing reflectance caused by localized SP. The optimized metasurface enhances performances by 16% over the conventional B-OLED.