Organic light emitting device

摘要

The invention relates to an optoelectronic device being usable in a vehicle, a computer, a television, a printer, a large area wall, theater or stadium screen, a billboard or a sign, wherein the optoelectronic device includes an OLED, in which emission from the device is obtainable via a phosphorescent decay process, and wherein the OLED comprises a material that is capable of receiving the energy from an exciton triplet state and emitting that energy as phosphorescent radiation.