Patent ID: 7285339
Filing Date: 2007-10-23
Classification: H01L,Y10S,Y10T

Abstract:
1. An organic electroluminescent (EL) device comprising: at least one organic EL multi-layer comprising a luminescent layer and one or more of a hole injecting layer, a hole transporting layer, an electron transporting layer or an electron injecting layer between a first electrode and a second electrode, and a layer I positioned between said second electrode and said at least one organic EL multi-layer, said layer I comprising at least one first material selected from porphyrinic compounds and further comprising a layer II including at least one second material selected from the group consisting of an alkali metal, an alkaline earth metal, and a compound thereof wherein said layer II is positioned between said layer I and said organic EL multi-layer or said layer II is positioned between said second electrode and said layer I.