Effects of Energy‐Level Alignment on Operating Voltages of Blue Organic Light‐Emitting Diodes (Adv. Mater. Interfaces 19/2023)

Blue Organic Light-Emitting Diodes In article number 2201925, Tsubasa Sasaki and colleagues show a clear correlation of the operating voltage of blue organic light-emitting diodes (OLEDs) with the energy barrier between the cathode and the emitting layer. Since there is almost zero energy barrier in blue OLEDs fabricated using a superbase as the electron injection layer, they exhibit lower operating voltages than conventional blue OLEDs fabricated using Li compounds.