ORGANIC LIGHT-EMITTING DIODE

摘要

An organic light-emitting diode including a first electrode; a second electrode facing the first electrode; an emission layer between the first electrode and the second electrode, the emission layer including a host and a dopant; a first hole transport layer between the first electrode and the emission layer; and a second hole transport layer between the first hole transport layer and the emission layer, wherein the first hole transport layer includes a first carbazole-based compound and a p-dopant, the second hole transport layer includes a second carbazole-based compound and does not comprise the p-dopant, the host of the emission layer includes a third carbazole-based compound, the dopant of the emission layer includes a phosphorescent metal complex, and the first carbazole-based compound, the second carbazole-based compound, and the third carbazole-based compound are all different from each other.

主权项

1. An organic light-emitting diode, comprising:
a first electrode; a second electrode facing the first electrode; an emission layer between the first electrode and the second electrode, the emission layer including a host and a dopant; a first hole transport layer between the first electrode and the emission layer; and a second hole transport layer between the first hole transport layer and the emission layer, wherein: the first hole transport layer includes a first carbazole-based compound and a p-dopant, the second hole transport layer includes a second carbazole-based compound and does not include the p-dopant, the host of the emission layer includes a third carbazole-based compound, the dopant of the emission layer includes a phosphorescent metal complex, and the first carbazole-based compound, the second carbazole-based compound, and the third carbazole-based compound are all different from each other.