ORGANIC EL MATERIAL-CONTAINING SOLUTION, METHOD FOR FORMING THIN FILM OF ORGANIC EL MATERIAL, THIN FILM OF ORGANIC EL MATERIAL, AND ORGANIC EL DEVICE

摘要

An organic EL material-containing solution contains an organic EL material and a solvent. The organic EL material contains a host and a dopant, the host being a naphthacene compound having a solubility in the solvent of 0.5 wt% or higher. The solvent is selected from the group consisting of an aromatic solvent, a halogen type solvent and an ether type solvent.