A multilayer structure has barrier properties for gases and vapors, for
example oxygen and water vapor; the structure comprises: an organic
substrate layer, and a multilayer permeation barrier thereon; the barrier
comprises: a) a first inorganic coating contacting a surface of the
substrate layer, and b) a first organic coating contacting a surface of
the inorganic coating; the structure may be employed in a variety of
articles where barrier properties are important especially in electronic
articles such as organic light emitting diode devices where superior
barrier characteristics over the life of the device are required.