How do P-OLEDs displays work?
P-OLED displays are made by applying a thin film of light-emitting polymer onto a glass or plastic substrate coated with a transparent electrode. A metal electrode is sputtered or evaporated on top of the polymer. Application of an electric field between these two electrodes results in emission of light from the polymer. When a current is applied, electrons from the cathode migrate through the cell and meet positive ‘holes’ migrating from the anode. When they meet, they form so-called excitons, and as electrons relax, energy is released as light. See also How P-OLEDs work.
