Organic light emitting diode having emission layer with host, emitting dopant and auxiliary dopant and method of fabricating the same

摘要

Provided is an organic light emitting diode which can easily control color coordinates and improve a device's life span characteristic by using an auxiliary dopant having a higher band gap energy than that of a host, and preferably, having an absolute value of the highest occupied molecular orbital energy level equal to or higher than that of the host, or an absolute value of the lowest unoccupied molecular orbital energy level equal to or lower than that of the host. The organic light emitting diode includes a first electrode, an emission layer disposed on the first electrode and including a host, an emitting dopant and an auxiliary dopant, and a second electrode disposed on the emission layer. Here, the auxiliary dopant has a higher band gap energy than the host. A method of fabricating the organic light emitting diode is provided.

主权项

1. An organic light emitting diode (OLED), comprising:
a first electrode; an emission layer disposed on the first electrode; and a second electrode disposed on the emission layer, wherein the emission layer includes a first layer including a host and an emitting dopant and a second layer including the host and an auxiliary dopant having a higher band gap energy than the host, wherein the first layer does not include the auxiliary dopant.