Part one covers materials for OLEDs. Chapters review conjugated polymers, transparent conducting thin films, iridium complexes and phosphorescent materials. Part two discusses topics such as highly efficient pin-type OLEDs, amorphous organic semiconductors, nanostructuring techniques, light extraction, color tuning, printing techniques, fluorenone defects and disruptive characteristics as well as durability issues. The concluding section explores the applications of OLEDs in displays and solid-state lighting, such as displays, microdisplays and transparent OLEDs, sensors and large-area OLED lighting panels.