ORGANIC LIGHT EMITTING DIODE AND METHOD OF PREPARATION THEREOF

摘要

The present invention provides an organic light emitting diode, characterized in that it has the following layers, each on top of the preceding one:;optionally a down conversion phosphor layer; a substrate; optionally a hole injecting layer; a non-emissive hole transporting layer which is crosslinked; a non-crosslinked emissive layer consisting of electron and hole transporting hosts doped with electron blue phosphorescent emitters; an electron transporting layer; a cathode layer. It further provides a method of preparation of such diode and materials for such diode.