Apparatus including a support body; an organic semiconductor composition
body on the support body, --and a first body including a hydrogenated
vinylaromatic-diene block copolymer on the organic semiconductor
composition body. Apparatus including a support body, --a first body
including a hydrogenated vinylaromatic-diene block copolymer on the
support body; and an organic semiconductor composition body on the first
body. Techniques for making an apparatus.