Electroluminescence from Double Layer Organic Light-emitting Diodes Using Dehydrocoupled Polysilanes as Hole Transport Layers

In this article, four polysilanes are used as hole transporting materials, together with the electroluminescent metal complex 8-hydroxyquinoline aluminium (Alq3), in organic double layer light emitting diodes (LED). It appears that the side chain substituents strongly influence the device performance. Amino-substituted polysilanes show stable device performance and a power efficiency of 0.33 lm W-1. This is an increase by more than 100% compared to the Alq3 single layer LED (0.15 lm W-1)