Molecular engineering to improve the balance of charge carrier in single-layer silole-based OLEDs.

We report a molecular engineering study on optical, structural and electrical properties of seven silole derivates aiming at enhancing the balance of charge carrier in single-layer devices. By functionalizing two hole-transporting groups, dipyridylamine or anthracene, on the silole ring, we have investigated the influence of both entity types on the hole current. We have concluded that in contrast to dipyridylamine groups, anthracene groups decrease the balance of charge carrier since 10