An OLED device comprises a cathode, an anode, and has therebetween a
light-emitting layer containing a phosphorescent emitter and a host
comprising a first aluminum or gallium complex containing at least one
2-(2-hydroxyphenyl)pyridine ligand and at least one phenoxy ligand,
wherein the phenoxy ligand is substituted by an amine or there is further
present adjacent to the light-emitting layer on the cathode side a layer
containing a second aluminum or gallium complex containing at least one
2-(2-hydroxyphenyl)pyridine ligand and at least one phenoxy ligand.