Phosphorescence emitting compositions and their use in displays

摘要

A composition comprises a host material and a phosphorescent emitter, wherein the phosphorescent emitter is present in the host material at a concentration of greater than 10wt %. The host material and phosphorescent emitter may be blended. The host material may be a polymer and a blue host material. The phosphorescent emitter may be a red emitter and an Ir complex. Also shown is an organic light-emitting device containing the composition and its use in displays.