Instant Low‐Temperature Cross‐Linking of Poly(N‐vinylcarbazole) for Solution‐Processed Multilayer Blue Phosphorescent Organic Light‐Emitting Devices. (25th September 2014) - Aizawa, Naoya
Abstract Poly(N‐vinylcarbazole) undergoes cross‐linking to highly solvent‐resistant films through an oxidative coupling reaction, for which an annealing process takes only 3 min at 110 °C. This reaction allows the construction of a solution‐processed multilayer OLED without a time‐consuming annealing process. The maximum external quantum efficiency reaches 18%, and remains at 17%, even at a high brightness of 10 000 cd m−2 for all‐solution‐processed blue OLEDs.