Polythiophene compositions for improving organic light-emitting diodes

摘要

The invention relates to compositions which include: (a) a polythiophene containing repeating units represented by the following general formula (I), wherein X represents, for example, -CH₂-CH(CH₂-O-(CH₂)₄SO₃^-H⁺)-; and (b) further polymers, that are different than polythiophene (a), and which contain SO₃^- M⁺ or COO^-M⁺ groups. Also disclosed are electroluminescing (EL) arrangements that contain hole-injecting layers which include such compositions.