Patent ID: 6989273
Filing Date: 2006-01-24
Classification: C07F,C09K,H01L,H05B,Y10S,Y10T

Abstract:
1. An emissive iridium (III) complex suitable for use in an emissive layer of an OLED, having the formula: wherein A is a group L′-R-L″ in which R is a divalent hydrocarbon radical, and L′, L″, L 1 , L 2 , L 3 and L 4 are heteroaromatic ligands having a carbon atom covalently bonded to the iridium atom and a nitrogen atom complexed to the iridium atom, wherein L 1 , L 2 , L 3 and L 4 are the same and not the same as L′ or L″.