How does a doped P-OLED display work?
Add-Vision’s most simple P-OLED device structure consists of a Light-Emitting Polymer (LEP) and air-stable cathode layer stacked onto an ITO-coated substrate, such as PET or PET. The conductive transparent ITO layer, or anode, can be patterned using a simple print-etch process. Then, using a LEP ink containing Add-Vision proprietary additives, an LEP film is printed directly onto the ITO layer. After the LEP layer is dried, an air-stable conductive paste, such as Silver, is then printed onto the LEP layer to form the cathode. Add-Vision has developed a specially-designed conductive paste suitable for printed OLEDs. The entire display undergoes a final annealing process before encapsulation. When applying a small voltage across the electrodes, injection and transport-enhancing interfacial layer formation occurs in situ the LEP, leading to efficient light emission from the LEP layer without relying on a low work-function electron source. It is this key characteristic of the Add-Vision de
