Planarizing agents and devices

The use of certain substances in the hole injection layer and / or hole transport layer can improve the operating life of the organic device. A polymer having a fused aromatic instrumental, such as polyvinyl naphthol polymer and a conjugated polymer may be used together. Ink may be produced as a film in an organic electronic device comprising the OLED, PLED and SMOLED and casting. One embodiment provides at least one conjugated polymer, and one or more optionally substituted, including fused aromatic hydrocarbon instrumental, composition comprising at least one second polymer different from the conjugated polymer. Silyl substituents may be hydroxyl. Aqueous-based ink that can be manufactured.