P‐191: Enhancing Light Extraction and Viewing‐Angle Characteristics in Microcavity TEOLEDs Through Refractive Index Modulation for Surface Plasmon Polaritons Suppression

This study improves microcavity OLED performance by tackling viewing angle dependency and efficiency limitations. Integrating a nanoporous film (NPF) and index‐matching gel resulted in a 26.36% enhancement in color stability and 14.2% increase in current efficiency. The NPF optimized angular light distribution, while the gel minimized internal reflection losses, enabling stable, high‐efficiency OLEDs suitable for large‐scale displays and advancing next‐generation display technologies.