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 layer and the second electrode, for preventing a second electrode forming metal from infiltrating into the emission layer. A manufacturing method includes operations to prepare the EL device.


> EL device and method for manufacturing the same

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