Patent ID: 7767317
Filing Date: 2010-08-03
Classification: C09K,H01L,H05B,Y10S

Abstract:
1. An OLED device comprising a cathode, a light emitting layer and an anode, in that order, and, having located between the cathode and the light emitting layer, a non-light emitting further layer containing; (a) a carbocyclic fused ring aromatic compound comprising greater than 10% of the layer by volume and represented by Formula (2): wherein: Ar R (b) a cyclometallated complex comprising 20% or greater of the layer by volume and represented by Formula (4′) wherein: Z and the dashed arc represent three atoms and the bonds necessary to complete a 6-membered ring with M; each A represents H or a substituent and each B represents an independently selected substituent on the Z atoms, provided that two or more substituents may combine to form a fused ring or a fused ring system; j is 3 and k is 1; M represents an alkali metal or alkaline earth metal; and m and n are independently selected integers selected to provide a neutral charge on the complex.