Patent ID: 8216697

Claim:
An OLED device comprising a cathode, an anode, and having therebetween a light-emitting layer and further comprising a first layer, between the light-emitting layer and the cathode, including a fluoranthene-macrocyclic compound comprising a fluoranthene nucleus having the 7,10-positions connected by a linking group, and wherein said fluoranthene nucleus can be further substituted, provided substituents in the 8- and 9-positions cannot combine to form a five-membered ring group; and wherein the OLED device includes at least one layer, between the light-emitting layer and the cathode, comprising an alkali metal material, wherein the fluoranthene-macrocyclic compound is represented by Formula (I), wherein: R 1 -R 8 independently represent hydrogen or a substituent group, and wherein adjacent R 1 -R 8 substituents can combine to form a ring group, provided R 1 and R 2 cannot combine to form a five-membered ring group; and L is —(CY 2 ) n — wherein: each Y can be the same or different and each Y represents a hydrogen or a substituent, provided adjacent substituents can combine to form a ring group; and n is 8-25.