Highly Conductive Polymer Anodes as Replacements for Inorganic Materials in High‐Efficiency Organic Light‐Emitting Diodes

Highly conductive polymer anodes are compared to ITO contacts for organic LEDs (OLEDs). The polymer PEDOT:PSS exhibits a conductivity of 500 S cm–1 and enables improved device performance and lower operating voltages compared to ITO-based devices (see figure). Red, green, and blue OLEDs with polymer anodes achieve device efficiencies of 15.9, 63.5, and 4.0 lm W–1, respectively.