An organic electroluminescent (EL) device includes a substrate, a first electrode disposed on the substrate, an emission layer comprising a polymer disposed on the first electrode, a second electrode formed on the emission layer, and a metal infiltration preventing layer, formed between the emission...http://www.google.com.au/patents/US20040056266?utm_source=gb-gplus-sharePatent US20040056266 - Organic electroluminescent device and manufacturing method thereof
